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WO2025162881A1 - Appareil à main à air chaud et procédé pour faire fonctionner un appareil à main à air chaud - Google Patents

Appareil à main à air chaud et procédé pour faire fonctionner un appareil à main à air chaud

Info

Publication number
WO2025162881A1
WO2025162881A1 PCT/EP2025/051992 EP2025051992W WO2025162881A1 WO 2025162881 A1 WO2025162881 A1 WO 2025162881A1 EP 2025051992 W EP2025051992 W EP 2025051992W WO 2025162881 A1 WO2025162881 A1 WO 2025162881A1
Authority
WO
WIPO (PCT)
Prior art keywords
hot air
start button
operating mode
held device
hand
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
PCT/EP2025/051992
Other languages
German (de)
English (en)
Inventor
Adam Warkiewicz
Stefan Lurati
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Leister Technologies AG
Original Assignee
Leister Technologies AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Leister Technologies AG filed Critical Leister Technologies AG
Publication of WO2025162881A1 publication Critical patent/WO2025162881A1/fr
Pending legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25F—COMBINATION OR MULTI-PURPOSE TOOLS NOT OTHERWISE PROVIDED FOR; DETAILS OR COMPONENTS OF PORTABLE POWER-DRIVEN TOOLS NOT PARTICULARLY RELATED TO THE OPERATIONS PERFORMED AND NOT OTHERWISE PROVIDED FOR
    • B25F5/00—Details or components of portable power-driven tools not particularly related to the operations performed and not otherwise provided for
    • B25F5/02—Construction of casings, bodies or handles
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H3/00—Air heaters
    • F24H3/02—Air heaters with forced circulation
    • F24H3/04—Air heaters with forced circulation the air being in direct contact with the heating medium, e.g. electric heating element
    • F24H3/0405—Air heaters with forced circulation the air being in direct contact with the heating medium, e.g. electric heating element using electric energy supply, e.g. the heating medium being a resistive element; Heating by direct contact, i.e. with resistive elements, electrodes and fins being bonded together without additional element in-between
    • F24H3/0423—Air heaters with forced circulation the air being in direct contact with the heating medium, e.g. electric heating element using electric energy supply, e.g. the heating medium being a resistive element; Heating by direct contact, i.e. with resistive elements, electrodes and fins being bonded together without additional element in-between hand-held air guns

Definitions

  • the present invention relates to a handheld hot air device, in particular a hot air gun, for generating a hot air stream, comprising a housing with a handle and a hot air blower arranged in the housing.
  • the present invention further relates to a method for operating a handheld hot air device.
  • Handheld hot air tools also known as handheld hot air tools
  • Hot air tools are used for welding plastics, shrinking and molding plastics, drying paint and varnishes, vehicle repairs, and much more. Thanks to their powerful hot air blower and numerous additional nozzles and attachments, handheld tools from the Swiss company Leister can be used even under difficult conditions and for demanding welding work.
  • a popular design is handheld hot air tools in the form of heat guns.
  • WO 2021/063553 A1 discloses a hot air handheld device as an example of an electric, pistol-like handheld device.
  • the handheld device comprises a device body for electrically activated processing of a workpiece; a handle part connected at an angle to the device body; an actuating device for manually activating and/or deactivating the handheld device, which is arranged on the device body or the handle part; and an unlocking device for manually unlocking and/or locking the actuating device.
  • the unlocking device is arranged on the device body or the handle part such that unlocking occurs by supporting the handheld device in stable equilibrium on one of the fingers of a user's hand when a user grasps the handle part.
  • the handheld device has a support pin that projects forward from the finger grip area of the handle part and has the unlocking device on its underside, wherein unlocking occurs by supporting the support pin on one of the fingers of the user's hand.
  • the hot air handheld device may comprise a housing with a handle part; a hot air blower for generating a hot air stream, which Housing is arranged; a release button for unlocking the hot air handheld device; and a start button for activating the hot air blower.
  • the method comprises the following steps: providing the hot air handheld device as described above or explained below; selecting the first or second operating mode to be selectively activated when the start button is pressed; unlocking the hot air handheld device using the release button and activating the hot air blower using the start button.
  • the hot air handheld device be configured to activate the hot air blower optionally in a first operating mode or in a second operating mode when the start button is pressed.
  • the functionality of the start button can be configured without mechanical modification.
  • a particular advantage of this solution can be that a user can flexibly adapt the functionality of the start button to their needs.
  • the hot air handheld device can be configured such that the hot air blower is active in a first operating mode only while the start button is pressed and held (ON), whereas in the second operating mode the hot air blower is alternately (permanently) switched on and off (ON/OFF) when the start button is pressed.
  • a locking pin can be provided, for example, which keeps the start button in the switched-on state until the locking pin is removed again.
  • a disadvantage of this solution can be that a mechanical locking mechanism is usually not very intuitive and requires additional mechanical components, thus increasing the design effort.
  • the inventors recognized that operating a mechanical locking mechanism can be perceived as unergonomic, especially when operating the device with gloves. The proposed solution eliminates such additional mechanics.
  • the proposed hot air tool also has a release button for unlocking the hot air tool.
  • the hot air handheld device can be configured such that the release button for unlocking the hot air handheld device and the start button for activating the hot air blower must be pressed simultaneously, at least to start the generation of the hot air stream.
  • this can also be understood to mean that the release button and the start button must each be pressed simultaneously or sequentially within a predetermined period of time in order to enable the generation of the hot air stream.
  • an unlocking mechanism can be advantageous for meeting safety requirements.
  • the release button can be arranged such that it is actuated intuitively by gripping the device. Such an unlocking mechanism is not necessarily required for conventional hot air devices, since, unlike battery-operated hot air handheld devices, these can only generate a hot air stream when the power plug is plugged in.
  • an advantageous combination of (intuitive) unlocking and, in particular, electronic two-button input is proposed, which is enhanced by the configurability of the start button's functionality. This also eliminates the additional effort required for mechanical locking.
  • a button can be understood as an operating element, such as a button, a switch, a trigger, or a touch-sensitive or touch element.
  • an operating element such as a button, a switch, a trigger, or a touch-sensitive or touch element.
  • different temperature settings or fan speeds are not necessarily considered different operating modes.
  • the functionality of the start button is preferably configurable without mechanical modification. Switching between the first and second operating modes can preferably be performed without additional operating elements.
  • the hot air hand-held device can be designed to generate a hot air stream with a temperature of at least 100°C, in particular of at least 200°C, in particular of at least 300°C, in particular of at least 400°C.
  • the hot air hand-held device can be configured so that the start button (a) functions as a non-latching start button in the first operating mode and (b) functions as a latching start button in the second operating mode.
  • the hot air handheld device can be configured such that the hot air blower remains activated in the first operating mode only when the start button is pressed and held; and wherein the hot air blower remains activated in the second operating mode even after a (single) push of the start button.
  • the hot air handheld device can be configured such that the hot air blower is deactivated in the second operating mode by a further (single) push of the start button.
  • the first operating mode can be referred to as the ON function, in which the device is only active when the start button is pressed without a click.
  • the second operating mode can be referred to as the ON/OFF function, in which alternating ON/OFF switching occurs when the start button is pressed.
  • Configurable operating modes for the start button can be advantageous, particularly for battery-operated hot air handheld devices.
  • Using the ON function can be advantageous, as battery-operated hot air handheld devices require a lot of energy, which is why the device should preferably only be switched on during the work process.
  • the configurable use of the ON/OFF function can also be advantageous. This functionality is desirable where the device is held in the hand for extended periods (relieves strain on the finger) or is to be operated without being held in the hand.
  • the hot air handheld device can be configured so that a function of the start button can be electronically changed.
  • An advantage of this design can be that operating convenience can be further improved while simultaneously ensuring operational reliability, with the hot air handheld device being unlocked thanks to the separate release button.
  • the unlock button and/or the start button can be designed as electronic buttons, electronic switches, or touch sensors.
  • the start button and the unlock button can, for example, be binary switches with an on and an off state.
  • One advantage is cost-effective production.
  • an electronic button can be easily evaluated, for example, via a control unit such as a microcontroller with I/O ports. This makes it possible to store different operating modes in the control unit and selectively activate them when the start button is pressed.
  • the unlock button can activate a first electrical switch
  • the start button can activate a second electrical switch.
  • the release button can be arranged in such a way that the release button is activated when the hot air handheld device is held by the handle.
  • the hot air tool can be designed as a pistol-like hot air tool.
  • One advantage of this design is that it allows for easy handling.
  • the hot air handheld device can be designed such that the handle is angled to the housing.
  • One advantage of this design is that the hot air handheld device allows for good handling.
  • a rechargeable battery can be located at an end of the handle opposite the housing. This can enable good weight distribution and further improve handling.
  • the release button can be arranged on a first side of the handle part and the start button can be arranged on a second side of the handle part.
  • the release button can be arranged on a rear side of the handle part with respect to an air outlet direction of the hot air flow.
  • the start button can be arranged on a front side of the handle part in the air outlet direction.
  • the release button located on the back of the handle can be operated when gripping the device, for example with the ball of your hand.
  • the start button located on the front of the handle can be operated with the index finger, middle finger or ring finger, for example.
  • the hot air handheld device can have a symmetrical arrangement of release button and start button and be suitable for both right- and left-handed users.
  • the hot air handheld device can, for example, be a cordless hot air handheld device with an angled handle section with a front on the side of the hot air outlet and an opposite back, with a start button integrated into the front of the handle and a release button integrated into the back.
  • the hot air handheld device can be set up in such a way that the (first and/or second) operating mode can be switched by entering a key code using the release button and/or start button.
  • the hot air handheld device can be set up in such a way that switching between the first operating mode and the second operating mode is effected by pressing the start button multiple times, in particular by pressing it twice, within a predetermined time interval.
  • Example of an ON/OFF operating mode If, for example, two quick consecutive presses of the start button are detected (in particular while the release button is pressed), the device switches on permanently, for example until the start button is pressed again (a third time). Pressing or releasing the release button is not absolutely necessary to switch it off.
  • Example of an ON operating mode If there is no second press after the first button is pressed, the device switches off again or runs as long as the start button is pressed or held down.
  • the hot air handheld device can be configured to activate the hot air blower optionally in the first operating mode, the second operating mode, or a third operating mode when the start button is pressed.
  • one or more additional operating modes are also conceivable, e.g., a boost function.
  • a boost function can be triggered by repeatedly pressing the start button. This allows increased power to be accessed for a limited period of time, even with battery-operated hot air handheld devices. without permanently increasing power consumption and significantly impairing battery life.
  • the hot air handheld device can be designed as a battery-operated hot air handheld device.
  • One advantage of this design can be improved handling and flexibility.
  • the proposed solution can be particularly advantageous for a battery-operated hot air handheld device, as an energy-saving non-latching operating mode (also referred to as ON operating mode or trigger mode) can be flexibly combined with an optionally activatable latching operating mode (also referred to as ON/OFF operating mode or latch mode).
  • the release button provides increased operational reliability.
  • the hot air handheld device can be configured to return to the first operating mode after the release button is released. This can be particularly advantageous for a battery-operated hot air handheld device.
  • the device can return to an energy-saving operating mode after the release button is released.
  • the start button can be configured, in particular, to function as a non-latching start button.
  • One advantage of this configuration can be that the device saves energy.
  • another advantage of this configuration can be improved operational reliability, since the device restarts in a defined state after a possible change of user.
  • Fig. 1 is a schematic representation of a hot air hand-held device for generating a hot air stream
  • Fig. 2 is a schematic representation of a hot air hand-held device for generating a hot air stream according to a further embodiment
  • Fig. 3 is a perspective view of the hot air hand-held device from Fig. 2;
  • Fig. 4 a detailed view of a handle part with release button and start button
  • Fig. 5 is a schematic representation of a hot air hand-held device for generating a hot air stream according to a further embodiment as a rod-shaped hot air hand-held device;
  • Fig. 6 is a flowchart of a method for operating a hot air hand-held device.
  • Fig. 1 shows a schematic representation of a hot air handheld device for generating a hot air flow.
  • the hot air handheld device has a housing 10 with a handle 11.
  • a hot air blower 20 is arranged in the housing 10 of the hot air handheld device 1.
  • the hot air blower has a fan 21 for generating an air flow and a heating element 22 for heating the air flow.
  • the heating element 22 can be, for example, an electrically heatable heating element, in particular a ceramic heating element.
  • Cold or not yet heated air 31 can be sucked in through an air inlet 12, heated by the hot air blower 20, and output as hot air 32 via an air outlet 13.
  • the air inlet 12 can be arranged in a rear area, such as on the back of the housing 10.
  • the air outlet 13 may be located in a front region, such as a front side of the housing 10.
  • the air outlet 13 may include an outlet nozzle to provide a desired flow profile.
  • the hot air handheld device has an unlocking button 41 for unlocking the hot air handheld device and a start button 42 for activating the hot air blower 20.
  • the proposed hot air handheld device 10 is configured to activate the hot air blower 20 optionally in a first operating mode or in a second operating mode upon actuation of the start button 42.
  • the hot air handheld device 1 can be configured so that the start button 42 (a) functions as a non-latching start button in the first operating mode and (b) functions as a latching start button in the second operating mode. Therefore, instead of providing a further mechanical element, such as an additional mechanical lock, to keep the start button in an activated state or permanently switched on state, a function of the start button can be changed and the hot air handheld device can be configured to activate the hot air blower 20 optionally in the first operating mode or the second operating mode when the start button 42 is actuated in a particularly similar manner. In other words, activation in a different operating mode can occur immediately upon actuation of the start button.
  • a locking pin can be provided which keeps the start button in an activated state until the locking pin is removed again.
  • the hot air handheld device 1 can be configured such that the hot air blower 20 remains activated in the first operating mode only upon pressing and holding the start button 42; and wherein the hot air blower 20 remains activated in the second operating mode upon a (single) pressing of the start button 42.
  • the hot air handheld device can be configured such that the hot air blower 20 is deactivated in the second operating mode by a further (single) pressing of the start button 42.
  • the first operating mode can be referred to as the ON function, as described above, in which the hot air blower 20 is only active during a non-latching actuation of the start button.
  • the second operating mode can be referred to as the ON/OFF function, wherein an alternating ON/OFF switching of the hot air blower 20 occurs when the start button 42 is actuated.
  • One advantage can be that no additional locking button or locking bolt is required.
  • configurable Operating modes for the start button can be advantageous. Using the ON function can be advantageous, as a battery-operated hot air handheld device consumes a lot of energy, so the device should preferably only be switched on during the work process.
  • the configurable ON/OFF function can also be advantageous. This functionality is desirable where the device is held in the hand for extended periods (relieving strain on the finger) or should be operated without being held in the hand.
  • the release button 41 is an optional element. However, particularly in conjunction with the proposed solution of selectively activating the hot air blower 20 in different operating modes when the start button 41 is pressed, separate unlocking with the release button is advantageous in order to avoid being surprised by the hot air blower being activated in an unintended operating mode.
  • the release button 41 for unlocking the hot air handheld device can also be understood as an unlock or release function, which may be required before the hot air flow is generated.
  • the hot air handheld device 1 is designed as a pistol-like hot air handheld device, with the handle part 11 arranged at an angle to the housing 10.
  • the handle part is arranged at a right angle to the main body of the housing 10.
  • arrangements at other angles are also conceivable, as shown, for example, in Figs. 2 to 4.
  • the release button 41 is preferably arranged such that when the hot air hand-held device 1 is held by the handle 11, the release button 41 is actuated.
  • the release button 41 is arranged on a first side of the handle 11 and the start button 42 is arranged on a second side of the handle 11.
  • the release button 41 is arranged relative to an air outlet.
  • the start button 42 is arranged on a rear side of the handle part 11 in the direction of the hot air flow 32 and the start button 42 is arranged on a front side of the handle part 11 in the direction of the air outlet.
  • the hot air handheld device 1 can have a controller 43.
  • the controller 43 can be connected to the release button 41 and the start button 42.
  • the controller 43 can also be connected to the hot air blower 20 or the fan 21 and/or the heating element 22.
  • the controller 43 can be implemented with a microcontroller with a memory device.
  • the release button 41 and the start button 42 can be switches, in particular binary switches, whose actuation can be evaluated by the controller 43.
  • Various operating modes can be stored in the controller 43, in which the hot air blower 20 can be selectively activated when the start button 41 is actuated. For example, a first operating mode in which the start button 42 functions as a non-latching start button, and a second operating mode in which the start button 42 functions as a latching start button.
  • the hot air handheld device 1 can be configured such that the (first and/or second) operating mode can be switched by entering a key code using the release button 41 and/or start button 42.
  • a control signal in the form of a key code can be provided via the release button 41 and/or start button 42, which causes a switch in the operating mode in which the hot air blower 20 is activated when the start button 42 is pressed.
  • switching between the first operating mode and the second operating mode can be effected by multiple actuations, in particular double actuation of the start button 42, within a predetermined time interval.
  • the release button 41 and/or start button 42 can preferably also be operated with one hand wearing work gloves. This makes operation easier.
  • the hot air hand-held device 1 can be designed to switch back to the first operating mode after releasing the release button 41, in particular wherein the start button 42 functions as a non-latching start button in the first operating mode. This ensures that the hot air handheld device 1 starts in a defined state, for example, in an energy-saving operating mode to extend the running time of a battery-operated hot air handheld device.
  • the hot air handheld device 1 can be designed as a battery-operated hot air handheld device.
  • a battery 50 can be arranged at an end of the handle part 11 opposite the main body of the housing 10.
  • Other arrangements, such as a battery at least partially integrated into the handle part 11, are also conceivable.
  • Figs. 2 and 3 show a schematic side view and a perspective view of a hot air handheld device 1 for generating a hot air stream according to another embodiment.
  • Fig. 4 shows a detailed view of a handle part with release button 41 and start button 42 corresponding to area A in Fig. 2.
  • the hot-air handheld device 1 described with reference to Figs. 2 to 4 can be configured in the same way as the schematically illustrated hot-air handheld device from Fig. 1. To avoid repetition, reference is made to the above description. Identical elements are provided with the same reference numerals.
  • the handle part 11 is arranged at an angle on an upper main part of the housing 10. This can enable ergonomic operation.
  • the release button 41 is again arranged on a rear side of the handle part 11.
  • the start button 42 is arranged on a front side of the handle part 11.
  • the hot air handheld device 1 can be intuitively unlocked by grasping the handle part 11, and the hot air blower can be activated, for example, with the index finger of the gripping hand.
  • a battery or a receptacle for a battery 50 is arranged on an underside of the handle part.
  • Fig. 4 shows a schematic sectional view of the handle part 11 of the hot air handheld device corresponding to the area A in Fig. 2.
  • the release button 41 can have an release button element 45 and an release switch 46.
  • the start button 42 can have a start button element 47 and a start switch 48.
  • an release signal can be provided to the controller 43 for unlocking the hot air handheld device.
  • a start signal can be provided to the controller 43 for activating the hot air blower 20 (cf. Fig. 1) to generate a hot air stream, which can be provided at an air outlet 13 (cf. Fig. 1, Fig. 2).
  • Fig. 5 shows a schematic representation of a hot air handheld device 1 for generating a hot air stream according to a further exemplary embodiment as a rod-shaped hot air handheld device 1.
  • the handle 11 can be designed as part of the rod-shaped housing 10.
  • the hot air handheld device 1 can optionally be a battery-operated hot air handheld device.
  • a rechargeable battery 50 can be arranged in the handle 11, for example.
  • other arrangements are also conceivable.
  • the hot air handheld device 1 has an air inlet 12 and an air outlet 13.
  • the generated hot air is discharged via the air outlet 13.
  • a hot air blower 20 with a fan 21 and a heating element 22 is arranged in the housing 10. It is understood that the air inlet 12 can also be arranged at a different location, for example, in a central area, in order to provide space for a battery in the rear area.
  • the hot air handheld device 1 further comprises a release button 41 for unlocking the hot air handheld device 1 and a start button 42 for activating the hot air blower 20.
  • the release button 41 can be arranged, for example, on an upper side of the housing 10 or handle part 11.
  • An advantage of this solution can be that the hot air handheld device 1 is intuitively unlocked when grasped.
  • a palm of the hand can actuate the release button 41.
  • the start button 42 can be arranged on a side of the housing 10 or handle part 11.
  • the start button 42 can be arranged in such a way that it can be operated with a thumb when gripping the hot air hand-held device 1.
  • a further control element and/or a display device 16 can be provided.
  • the operating mode that is optionally activated when the start button is pressed can be displayed on a display device.
  • Fig. 6 shows a flowchart of a method 100 for operating a hot air handheld device 1.
  • a hot air handheld device is provided as described above or explained below.
  • a first or second operating mode is selected, which is to be selectively activated upon pressing the start button.
  • the hot air handheld device is unlocked using the unlocking button, and the hot air blower is activated using the start button.
  • the solutions proposed herein can provide an improved hot air handheld device and method for operating a hot air handheld device.
  • operating comfort can be further improved while simultaneously ensuring operational reliability.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • General Engineering & Computer Science (AREA)
  • Direct Air Heating By Heater Or Combustion Gas (AREA)

Abstract

L'invention concerne un appareil à main à air chaud (1) destiné à produire un flux d'air chaud (32) comprenant un boîtier (10) pourvu d'une partie de préhension (11) ; un ventilateur à air chaud (20) qui est disposé dans le boîtier (10); une touche de déverrouillage (41) pour débloquer l'appareil à main à air chaud; et un bouton de démarrage (42) pour activer le ventilateur à air chaud (20) ; l'appareil à main à air chaud (1) étant conçu pour activer le ventilateur à air chaud (20) au choix dans un premier mode de fonctionnement ou dans un deuxième mode de fonctionnement lors de l'actionnement du bouton de démarrage (41). Cette invention concerne en outre un procédé correspondant (100) pour faire fonctionner un appareil à main à air chaud (1).
PCT/EP2025/051992 2024-01-29 2025-01-27 Appareil à main à air chaud et procédé pour faire fonctionner un appareil à main à air chaud Pending WO2025162881A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102024102484.4 2024-01-29
DE102024102484.4A DE102024102484A1 (de) 2024-01-29 2024-01-29 Heißlufthandgerät und Verfahren zum Betrieb eines Heißlufthandgeräts

Publications (1)

Publication Number Publication Date
WO2025162881A1 true WO2025162881A1 (fr) 2025-08-07

Family

ID=94481142

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2025/051992 Pending WO2025162881A1 (fr) 2024-01-29 2025-01-27 Appareil à main à air chaud et procédé pour faire fonctionner un appareil à main à air chaud

Country Status (2)

Country Link
DE (1) DE102024102484A1 (fr)
WO (1) WO2025162881A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021063553A1 (fr) 2019-10-01 2021-04-08 Steinel Gmbh Appareil à main électrique de type pistolet
US20210372662A1 (en) * 2019-01-14 2021-12-02 Steinel Gmbh Hot-air fan and method for operating same
EP4339979A1 (fr) * 2022-09-14 2024-03-20 Hilti Aktiengesellschaft Ensemble commutateur, procédé de commande d'ensemble commutateur et outil électrique

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5195164A (en) * 1990-05-17 1993-03-16 Lambert William S Electric heater/blowers with selectively-locked output variable heat and blower controls
DE102007035096A1 (de) * 2007-07-26 2009-01-29 Robert Bosch Gmbh Gerätesicherungsvorrichtung
DE202011052043U1 (de) * 2011-11-21 2012-02-09 Leister Technologies Ag Heißlufthandgerät mit einer digitalen Bedieneinrichtung mit Universal-Bedienelement
DE102013212573B4 (de) * 2013-06-28 2023-12-14 Robert Bosch Gmbh Handwerkzeugmaschinenschaltvorrichtung
DE102015214368A1 (de) * 2014-12-09 2016-06-09 Robert Bosch Gmbh Werkzeugmaschinenbedienvorrichtung

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20210372662A1 (en) * 2019-01-14 2021-12-02 Steinel Gmbh Hot-air fan and method for operating same
WO2021063553A1 (fr) 2019-10-01 2021-04-08 Steinel Gmbh Appareil à main électrique de type pistolet
EP4339979A1 (fr) * 2022-09-14 2024-03-20 Hilti Aktiengesellschaft Ensemble commutateur, procédé de commande d'ensemble commutateur et outil électrique

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