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WO2001038150A1 - Dispositif de determination de niveau de pression de gaz - Google Patents

Dispositif de determination de niveau de pression de gaz Download PDF

Info

Publication number
WO2001038150A1
WO2001038150A1 PCT/GB2000/004502 GB0004502W WO0138150A1 WO 2001038150 A1 WO2001038150 A1 WO 2001038150A1 GB 0004502 W GB0004502 W GB 0004502W WO 0138150 A1 WO0138150 A1 WO 0138150A1
Authority
WO
WIPO (PCT)
Prior art keywords
gas
release valve
pressure
valve
release
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.)
Ceased
Application number
PCT/GB2000/004502
Other languages
English (en)
Inventor
David Daniel George Vile
Graham Dudley Eves
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.)
Transense Technologies PLC
Original Assignee
Transense Technologies PLC
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 Transense Technologies PLC filed Critical Transense Technologies PLC
Priority to AU16471/01A priority Critical patent/AU1647101A/en
Publication of WO2001038150A1 publication Critical patent/WO2001038150A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
    • B60C29/00—Arrangements of tyre-inflating valves to tyres or rims; Accessories for tyre-inflating valves, not otherwise provided for
    • B60C29/06—Accessories for tyre-inflating valves, e.g. housings, guards, covers for valve caps, locks, not otherwise provided for
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K15/00—Check valves
    • F16K15/20—Check valves specially designed for inflatable bodies, e.g. tyres
    • F16K15/207—Check valves specially designed for inflatable bodies, e.g. tyres and combined with other valves, e.g. safety valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
    • F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
    • F16K17/04—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded
    • F16K17/06—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded with special arrangements for adjusting the opening pressure

Definitions

  • the present invention relates to a device for ensuring that gas pressure within a chamber is accurately set to desired, pre-determined levels.
  • the present invention relates to a device that can be used for ensuring that pneumatic tyres of vehicles are correctly inflated to the appropriate levels of air pressure.
  • the present invention provides a device for setting, to a desired level, the pressure of a gas held within a chamber, the device comprising an inlet adapted to receive a gas for entry into said chamber; an outlet connectable to said chamber; a transfer passage providing fluid communication between the inlet and outlet; and a release valve adapted to release, from the device, gas located in said transfer passage having a pressure greater than said desired level, the device being characterised in that the release valve is moveable between at least two preset configurations wherein the configuration of the release valve determines the level of pressure above which the release valve releases gas from the device.
  • a device may be provided wherein a first preset configuration of the release valve corresponds to, for example, a pressure setting for the front tyres of a motor vehicle and a second preset configuration of the release valve corresponds to, for example, a pressure setting for the rear tyres of a motor vehicle.
  • a first preset configuration of the release valve corresponds to, for example, a pressure setting for the front tyres of a motor vehicle
  • a second preset configuration of the release valve corresponds to, for example, a pressure setting for the rear tyres of a motor vehicle.
  • the chamber is typically a pneumatic tyre of a vehicle, any chamber that requires accurate setting of gas pressure of a gas contained therein is envisaged.
  • the pre-determined level(s) of gas pressure are specific to the vehicle type, as specified by the vehicle manufacturer.
  • each device will be specifically calibrated upon manufacture to be used only with a specific vehicle type, so that vehicles of different type will require differently calibrated devices and will typically be sold with the appropriate device already supplied.
  • the pre-determined level of gas pressure can be set for tyres associated with different vehicle axles and/or different vehicle loadings.
  • the device may be used to set the different pressures required for front and rear tyres respectively, as well as to set the different pressures required for normal and heavy vehicle loads.
  • each device is calibrated to be capable of setting predetermined gas pressure levels different from those of other such devices.
  • a manufacturer of several vehicle types may manufacture the correspondingly calibrated devices as sets of devices, with each member of a set being supplied for use with a different (and appropriate) vehicle type.
  • the present invention also provides use of such devices for increasing or decreasing gas pressure to a pre-determined desired level.
  • the device may be connected to both an air supply and a tyre so that air may be supplied to the tyre until the predetermined tyre pressure level is achieved.
  • the device may be connected to a front tyre and the device may be set to allow the tyre to be inflated to a pressure appropriate for heavy loads.
  • such a front tyre may be deflated by using the device with or without connection to an air supply, to assume a pressure appropriate for a normal vehicle load.
  • Figure 1 shows a schematic representation of one embodiment of the device of the present invention.
  • Figure 2 illustrates a second embodiment of the device of the present invention.
  • FIG. 1 The schematic representation of Figure 1 shows an air inlet port (1) connectable to an air-line (not shown), the air inlet port (1) supplying air to a pressure relief valve (2).
  • a manual selection switch (3) has an indicator with indicator marks, for example, for heavily loaded rear tyres (A'), normally loaded rear tyres (B'), heavily loaded front tyres (C) and normally loaded front tyres (D').
  • the corresponding position (A, B, C or D) of a first spring (15) associated with the pressure relief valve (2) is adopted.
  • the corresponding position of the first spring (15) sets a certain tension within the first spring (15), so that the pressure relief valve (2) can only open to allow air to flow through it, and to pass through a first non-return valve (4), when the pressure of the air within the pressure relief valve (2) is sufficient to overcome the tension in the first spring (15).
  • the first spring (15) may be set to a tension that represents a desired chamber air pressure.
  • the chamber air pressure is lower than that desired, that is, the chamber is under- inflated, air supplied from the inlet port (1) will flow through the pressure relief valve (2) and onwards to the outlet port (6) so as to enter the chamber and inflate it.
  • any further air supplied from the inlet port (1) will cause pressure in the pressure relief valve (2) to be sufficient to overcome the tension in the first spring (15), thus allowing the further air to be vented away from the chamber through the first non-return valve (4).
  • the chamber will be set, if it is a tyre, to an air pressure suitable for. a heavily loaded rear vehicle tyre.
  • the first spring (15) is set instead to position D, then the chamber will be set to a pressure suitable for a normally loaded front vehicle tyre.
  • Figure 1 shows the pressure relief valve (2) operating by way of a first spring (15)
  • any suitable means can be used that is capable of (a) setting relief pressures above which the valve (2) can open and so allow gas to be vented away from the chamber; and (b) setting relief pressures below which the valve (2) can remain closed and so allow gas to inflate the chamber via the outlet port (6).
  • Figure 1 also shows a 'correct inflation' indicator (7), which is connected to receive gas passing through the first non-return valve (4) via an entry port (9).
  • a piston (11) is biased towards the entry port (9) by a second spring (10).
  • a device is provided with an inlet port (16) for passing gas through a first non-return valve (17) and through an outlet port (18) when a pressure relief valve (20) is in a closed position (as shown).
  • the outlet port (18) of the device may be attached to the inflation valve of a pneumatic tyre such that a depression pin (32) of the outlet port (18) mechanically holds open the tyre's nonreturn valve (not shown).
  • the inlet port (16) may be connected to an air supply line, so that the tyre can be inflated when the pressure relief valve (20) is in a closed position.
  • the indicator valve (29) has a second spring (30) which is of lower tension bias than the first spring (21).
  • the second spring (30) is compressed and the indicator valve (29) opens.
  • air pressure within the compartment (28) reduces and the second spring (21) resumes its former position with the indicator valve (29) closing.
  • Subsequent increase in pressure within the compartment (28) opens the indicator valve (29) once again, and so a cycle of opening and closing of the indicator valve (29) continues so long as air passes through the vent (27).
  • the oscillation of the indicator valve (29) provides the user of the device with an audible, visual and tactile signal that the desired, pre-determined tyre pressure has been achieved.
  • the device can be pre-set to allow the inflation of the tyre to anyone of several pre-determined, desired pressures. This is achieved by pre-setting the tension in the first spring (21) by manually setting an adjustment cap (23) of the device by rotation of the cap (23).
  • the cap (23) is connected to a unit (22) that can compress the first spring (21) by calibrated increments.
  • the increments are calibrated on the unit (22) by indents (A', B', C and D'), which each represent specific spring (21) tensions and so represent specific, desired tyre pressures.
  • the user By rotating the cap (23), the user rotates a helical nut about a helical screw (26) within the cap (23), so causing axial movement of the unit (22) longitudinally down the device and so compressing the first spring (21).
  • An anti- rotation pin (25) prevents the unit (22) from rotating, so that the rotational movement of the cap (23) is translated into linear movement of the unit (22).
  • the user will match up external markings on the cap (23) to give the device a pre-set position, which corresponds to a position in which one of the indents (A', B', C or D') is positively engaged with an engagement means (24) to help lock the setting of the first spring's (21) compression.
  • a simple push/pull system with an external indicator of settings may be used to set the first spring (21) compression.
  • the device may be connected via its inlet port (16) to an air supply line and via its outlet port (18) to the inflation valve of a tyre.
  • the correct setting of the device can be made by rotating the cap (23) and then air may be passed into the tyre until the indicator valve (29) indicates that the desired, pre- determined tyre pressure has been achieved.
  • the vehicle user may wish to revert the pressure to one appropriate for normal loads once the load has been removed from the vehicle.
  • the user will attach the device to the tyre via its outlet port (18), having pre-set the rotation of the cap (23) to the setting appropriate with normal loads and the axle upon which the tyre is located.
  • outlet port (18) is attached to the tyre
  • the depression pin (33) opens the tyre's non-return valve (not shown) and air can escape from the tyre through the outlet port (18).
  • the indicator valve (23) will cease to make an indicating sound.
  • Each device can be tailored for a specific vehicle type and may be identified accordingly. Typically, it may form an essential constituent of the tool kit supplied by the manufacturer when the vehicle is made.
  • the devices can be machined so as to have a robustness that will ensure that they remain accurate throughout their projected life, typically 10 years.
  • the present invention provides users with an accurate method of being able to inflate and maintain gas pressure within a chamber, for example a pneumatic tyre, at the correct inflation pressures.
  • the device of the invention is very easy to use and requires no complicated readings to be made. Indeed, the predetermined settings of the device are usually factory set and fixed for the life of the device.
  • the device allows users to easily and accurately set increased tyre pressures for heavy load carrying or for tyres located on different axles. Further, the device may be a hand-held, conveniently sized tool and requires no battery or other external source of power.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Measuring Fluid Pressure (AREA)

Abstract

Selon un aspect, l'invention concerne un dispositif de détermination de niveau de pression de gaz dans une chambre, qui comprend une entrée (16) pour la réception de gaz dans ladite chambre; une sortie (18) pouvant être reliée à cette chambre; un passage de transfert assurant l'échange de fluide entre l'entrée (16) et la sortie (18); et une soupape de décharge (20) laissant échapper du dispositif une certaine quantité de gaz située dans le passage de transfert lorsque la pression est supérieure au niveau voulu. Cette soupape (20) est commutable entre au moins deux configurations préétablies, sachant que la configuration de ladite soupape (20) détermine le niveau de pression au-dessus duquel elle (2) laisse échapper du dispositif une certaine quantité de gaz.
PCT/GB2000/004502 1999-11-25 2000-11-27 Dispositif de determination de niveau de pression de gaz Ceased WO2001038150A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU16471/01A AU1647101A (en) 1999-11-25 2000-11-27 Device for setting gas pressure levels

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB9927739.4 1999-11-25
GB9927739A GB2356704A (en) 1999-11-25 1999-11-25 Device for setting gas pressure levels

Publications (1)

Publication Number Publication Date
WO2001038150A1 true WO2001038150A1 (fr) 2001-05-31

Family

ID=10865035

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB2000/004502 Ceased WO2001038150A1 (fr) 1999-11-25 2000-11-27 Dispositif de determination de niveau de pression de gaz

Country Status (3)

Country Link
AU (1) AU1647101A (fr)
GB (1) GB2356704A (fr)
WO (1) WO2001038150A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1389486B1 (fr) * 2002-07-16 2005-10-19 Mann+Hummel Gmbh Soupape de contrôle d'un écoulement de fluide
NL1022212C2 (nl) * 2002-12-19 2004-07-01 Dsw Dienst Sociale Werkvoorzie Veiligheidsafsluiter.
WO2017132472A1 (fr) * 2016-01-29 2017-08-03 Dana Heavy Vehicle Systems Group, Llc Ensemble de soupape pour un système de gonflage de pneumatique

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB194048A (en) * 1922-01-04 1923-03-08 Dozier Thornton Bentley Improved pressure gauge more especially for use with pneumatic tyres
GB383776A (en) * 1931-08-19 1932-11-24 Alexander Monro Pressure regulating means for use in inflating and deflating pneumatic tyres or the like
US3807432A (en) 1972-11-14 1974-04-30 R Cain Pressure relief valve for bicycle tires
GB2197476A (en) 1986-11-13 1988-05-18 Jackson Liu Apparatus for inflating tyres

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4015624A (en) * 1973-10-19 1977-04-05 The B.F. Goodrich Company Tire valve
US3994312A (en) * 1975-05-19 1976-11-30 Tanner Electronic Systems Technology, Inc. Inflation pressure regulator
DE3027792A1 (de) * 1980-07-23 1982-02-18 Tefa Autozubehörfabrik GmbH, 7250 Leonberg Kontrollvorrichtung zur luftdruckkontrolle beim aufpumpen von luftreifen von fahrzeugraedern
CA1332042C (fr) * 1988-09-09 1994-09-20 Donald R. Gneiding Valve de gonflage pour pneumatiques equipee de reglages de debit et de surpression
US5054511A (en) * 1990-09-11 1991-10-08 Tuan C T Tire valve having an automatic pressure release device
GB9322554D0 (en) * 1993-11-02 1993-12-22 Raychem Sa Nv Environmental sealing

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB194048A (en) * 1922-01-04 1923-03-08 Dozier Thornton Bentley Improved pressure gauge more especially for use with pneumatic tyres
GB383776A (en) * 1931-08-19 1932-11-24 Alexander Monro Pressure regulating means for use in inflating and deflating pneumatic tyres or the like
US3807432A (en) 1972-11-14 1974-04-30 R Cain Pressure relief valve for bicycle tires
GB2197476A (en) 1986-11-13 1988-05-18 Jackson Liu Apparatus for inflating tyres

Also Published As

Publication number Publication date
GB2356704A (en) 2001-05-30
AU1647101A (en) 2001-06-04
GB9927739D0 (en) 2000-01-26

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