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WO1983002812A1 - Dispositif de verrouillage d'une soupape commandee manuellement - Google Patents

Dispositif de verrouillage d'une soupape commandee manuellement Download PDF

Info

Publication number
WO1983002812A1
WO1983002812A1 PCT/US1982/000155 US8200155W WO8302812A1 WO 1983002812 A1 WO1983002812 A1 WO 1983002812A1 US 8200155 W US8200155 W US 8200155W WO 8302812 A1 WO8302812 A1 WO 8302812A1
Authority
WO
WIPO (PCT)
Prior art keywords
guard
handle
locking device
valve
disposed
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/US1982/000155
Other languages
English (en)
Inventor
Robert L Isaia
Leonard P Hanson
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to PCT/US1982/000155 priority Critical patent/WO1983002812A1/fr
Publication of WO1983002812A1 publication Critical patent/WO1983002812A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • 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
    • F16K35/00—Means to prevent accidental or unauthorised actuation
    • F16K35/06—Means to prevent accidental or unauthorised actuation using a removable actuating or locking member, e.g. a key

Definitions

  • This invention relates generally to a locking device for a hand operated valve and more particularly to a locking device which enables the selective operation of the valve without the necessity of first removing the locking device from the valve.
  • Earthmoving vehicles are typically powered by diesel engines and have large fuel tanks for supplying diesel fuel to such engines. Small amounts of water frequently accumulates in such tanks, which if allowed to remain, would be injurious to the operation of the diesel engine. Consequently, such fuel tanks are typically equipped with a fuel drain line to allow any water accumulation at the bottom of the tank to be drained away before operation of the engine. It is common practice to provide the drain line with a hand operated or drain valve for facilitating this maintenance procedure at the beginning of work each day. It will also be appreciated that such drain valve also allows the complete draining of the tank when such is desired.
  • a locking device for a hand operated valve having a valve body and a handle rotatable between respective open and closed positions.
  • the locking device is provided with a guard having a base portion disposed in overlying relationship to the handle of the valve and an anti-rotational stop extending from the base portion toward the valve body.
  • Means for non-rotatably and reciprocally mounting the guard to the handle is provided for movement of the guard toward and away from the valve body between respective locked and unlocked positions of the guard.
  • the anti-rotational stop In the locked position, the anti-rotational stop is disposed in a position to engage the valve body and prevent rotation of the handle.
  • the stop In the unlocked position, the stop is spaced free of the valve body to permit the rotation and opening of the valve.
  • the present invention overcomes these problems by providing a locking device which is movable to an unlocked position while remaining attached to the valve.
  • a padlock which is used to lock the guard in its locked position may be conveniently reattached in the same location when the guard is in its unlocked position to provide a convenient storage place for the padlock. This prevents the padlock from becoming inadvertently misplaced or lost.
  • Fig. 1 is a side elevational view of a fuel drain line equipped with a hand operated valve and a locking device embodying the present invention and further showing fragmentary portions of a vehicle and a fuel tank.
  • Fig. 2 is a plan view taken generally along lines II of Fig. 1 and showing the locking device embodying the present invention in a locked position and having a portion thereof broken away and certain components shown in section.
  • Fig. 3 is a plan view similar to Fig. 2, but showing the locking device in an unlocked position.
  • Fig. 4 is a rear elevational view of the locking device of Fig. 1 and showing, in phantom, the position of the locking device when the valve is in an open position.
  • a locking device embodying the principles of the present invention, is generally indicated at 10 in Fig. 1.
  • the locking device 10 is mounted to a hand operated valve, such as a fuel drain valve 12.
  • the drain valve 12 is disposed in a fuel drain line 13 which is in communication with a fuel tank, partially shown at 15, of an earthmoving vehicle, a fragmentary portion of
  • the hand operated or drain valve 12 may be of any commercially available type, for instance, valve part number P 40533 from Hirada Valve Company Ltd. or part number 30014300 from Gould Inc., Valve and Fitting ⁇ _5 Division.
  • Such valve 12 include a valve body 1 ' 8 having a longitudinally disposed through"passage 19, shown in Fig. 2, connected in communication with the drain line 13.
  • the drain valve 12 also includes a ball type valving element, not shown, coupled for rotation by a
  • the handle 21 is rotatable through a 90° arc A between an off or valve closing position, at which the handle 21 is oriented 25 transversely to the passage 19, and an on or valve opening position at which the handle 21 is disposed in the direction of the passage 19, as represented in phantom at 21' in Fig. 4.
  • the handle 21 is also provided with a pair of spaced apertures 22 and 23.
  • the locking device 10 of the present invention includes a guard 25 disposed over the handle 21.
  • the guard 25 is of a generally U-shaped channel configuration having a pair of spaced apart leg portions 27 and 28 and a base portion 30 interconnecting the leg portions 27 and 28.
  • the base portion 30 is of a construction to closely overlie the handle 21 when such handle is disposed in its closed position.
  • each leg portion 27 and 28 is provided with a centrally disposed cutout 31 forming a passage through which the valve body 18 transversely extends when the handle 21 is in its closed position.
  • Each cutout 31 has a pair of opposed side edges defining anti-rotational stops 33,34.
  • the anti-rotational stops 33,34 are oriented to engage the valve body 18 for preventing the rotation of such handle 21.
  • the locking device 10 also includes means 36 for non-rotatably and reciprocally mounting the guard 25 to the handle 21.
  • Such mounting means 36 provides for the lowering and raising of the guard 25 between a locked position, shown in Fig. 2 and an unlocked position, shown in Fig. 3.
  • the locked position of the guard 25 is only obtainable when the handle 21 is in its closed position.
  • the anti-rotational stops 33,34 are on such a construction and orientation so as to be disposed in close fitting relationship on opposite sides of the valve body 18 such that rotation of the handle 21 is prevented through the engagement of the stops 33,34 with the valve body 18.
  • the leg portions 27 and 28 are disposed above the valve body 18 such that the stops 33,34 are in a non-engaging relationship with the valve body 18, thus permitting free rotation of the handle 21.
  • the means 36 for non-rotatably and reciprocally mounting the guard 25 to the handle 21 preferably includes a pair of elongated pins 37 and 38.
  • Each pin 37,38 is preferably secured to the base portion 30 and is of a construction and orientation so as to be slideably received within a respective one of the apertures 22,23 of the handle 21.
  • the locking means 46 includes mating shackle receiving openings 48 through each of the leg portions 27,28 and the adjoining edge portions of the base portion 30 of the guard 25 for receiving a U-shaped shackle 50 of a conventional padlock 51.
  • the openings 48 are disposed in a location such that the shackle 50 is disposed in an underlying relationship to the handle 21 when the guard 25 is in its locked position.
  • the padlock 51 can be re-attached in the same shackle receiving openings 48, but with the shackle 50 being in an overlying relationship to the handle 21.
  • Fuel drain valves 12 used on earthmoving vehicles are typically located on the exterior of such vehicles and, thus, are exposed and subject to unauthorized use, resulting in the frequent loss of diesel fuel from fuel tanks of such vehicles.
  • the present locking device 10 can effectively eliminate such fuel loss.
  • a guard 25 is urged to its lowered or locked position by the springs 44.
  • the opposing edges or stops 33,34 provided by the cutout 31 are disposed on opposite sides of the valve body 18 to prevent the rotation of the guard 25 and handle 21 via the abutting engagement of such stops 33,34 with the valve body 18.
  • valve handle 21 is effectively captured between the base portion 30 of a guard 25 and the shackle 50 of the padlock 51, thus preventing the guard from being raised to its unlocked position shown in Fig. 3. It will be appreciated that without the guard being raised, the handle 21 of the valve 12 cannot be turned to its open position.
  • the padlock 51 is unlocked and removed.
  • the guard 25 can be raised to its unlocked position to allow the turning of the handle 21, along with the guard, to its open position, as shown in phantom in Fig. 4.
  • the guard 25, itself does not have to be moved from the valve 12 to allow the rotation of the handle 21 to its open position.
  • the retaining means 40 keeps the guard 25 attached to the handle 21.
  • the mounting means 36 and the retaining means 40 cooperate to eliminate the possible loss or misplacement of the guard 25 after operation of the fuel drain valve 12.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Preventing Unauthorised Actuation Of Valves (AREA)

Abstract

Un dispositif de verrouillage (10) évite qu'une soupape commandée manuellement, notamment une soupape (12) de drainage de combustible d'un véhicule de terrassement (16), ne soit actionnée sans autorisation. Le dispositif de verrouillage (10) comprend une gaine (25) et un mécanisme (36) qui permet de monter la gaine (25) de façon non-rotative et avec un mouvement alternatif sur une poignée (21) de la soupape (12). Le mécanisme de montage (25) permet efficacement de déplacer la gaine (25) d'une position de verrouillage à une position de déverrouillage. Dans cette dernière position, il est possible d'actionner à volonté la soupape (12) sans qu'il soit nécessaire d'enlever la gaine (25) de la soupape (12). Le dispositf de verrouillage (10) peut être verrouillé avec un cadenas (51) conventionnel. La gaine (25) comprend un compartiment où il est possible de ranger le cadenas (51) lorsque l'on souhaite maintenir la soupape (12) en état de fonctionnement pendant longtemps.
PCT/US1982/000155 1982-02-05 1982-02-05 Dispositif de verrouillage d'une soupape commandee manuellement Ceased WO1983002812A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/US1982/000155 WO1983002812A1 (fr) 1982-02-05 1982-02-05 Dispositif de verrouillage d'une soupape commandee manuellement

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/US1982/000155 WO1983002812A1 (fr) 1982-02-05 1982-02-05 Dispositif de verrouillage d'une soupape commandee manuellement

Publications (1)

Publication Number Publication Date
WO1983002812A1 true WO1983002812A1 (fr) 1983-08-18

Family

ID=22167801

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1982/000155 Ceased WO1983002812A1 (fr) 1982-02-05 1982-02-05 Dispositif de verrouillage d'une soupape commandee manuellement

Country Status (1)

Country Link
WO (1) WO1983002812A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5165263A (en) * 1992-01-17 1992-11-24 Claude Perron Valve lock

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US812021A (en) * 1904-09-15 1906-02-06 William T Dahl Faucet-lock.
US4162690A (en) * 1977-11-18 1979-07-31 Jamesbury Corp. Valve locking device

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US812021A (en) * 1904-09-15 1906-02-06 William T Dahl Faucet-lock.
US4162690A (en) * 1977-11-18 1979-07-31 Jamesbury Corp. Valve locking device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5165263A (en) * 1992-01-17 1992-11-24 Claude Perron Valve lock

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