EP0097443A1 - Bouchon sous pression - Google Patents

Bouchon sous pression Download PDF

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Publication number
EP0097443A1
EP0097443A1 EP83303216A EP83303216A EP0097443A1 EP 0097443 A1 EP0097443 A1 EP 0097443A1 EP 83303216 A EP83303216 A EP 83303216A EP 83303216 A EP83303216 A EP 83303216A EP 0097443 A1 EP0097443 A1 EP 0097443A1
Authority
EP
European Patent Office
Prior art keywords
pressure
cap
seal
vent
cooling system
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.)
Withdrawn
Application number
EP83303216A
Other languages
German (de)
English (en)
Inventor
Henry Clifford Rees Price
Graham Gerald Lardner
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.)
Unipart Group Ltd
Original Assignee
Unipart Group Ltd
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 Unipart Group Ltd filed Critical Unipart Group Ltd
Publication of EP0097443A1 publication Critical patent/EP0097443A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P11/00—Component parts, details, or accessories not provided for in, or of interest apart from, groups F01P1/00 - F01P9/00
    • F01P11/02—Liquid-coolant filling, overflow, venting, or draining devices
    • F01P11/0204—Filling
    • F01P11/0209—Closure caps
    • F01P11/0247—Safety; Locking against opening

Definitions

  • This invention relates to pressure caps, and particularly to pressure caps for use with vehicle cooling systems.
  • the invention provides a pressure cap for use with a vehicle cooling system which pressure cap includes a vent member which can be manually depressed to open a valve in the cap to bring the system pressure to atmospheric pressure characterised in that an elastomeric or rubber washer surrounds the stem of the vent member, which washer seals against the stem to prevent the escape of gas or vapour to the region of the vent member, and is compressed on depression of the vent member tending to return the vent member to its starting position.
  • the elastomeric or rubber washer performs the dual function of eliminating the possibility of water vapour or air escaping around the stem of the vent member onto the hand of the user and of providing a restoring force for returning the vent member to its starting position.
  • the invention avoids the inconvenience of the prior proposal (UK Patent Number 1 034 986) where the cap has to be removed each time the vent member is operated in order to re-set it. It may be desirable to operate the vent member by depressing it briefly several times in sucession and this would not be possible with the prior proposal.
  • the valve is an under-pressure valve which opens when the system exceeds a given under-pressure.
  • the seal member of the under-pressure valve is also the seal member of an over-pressure valve which opens when the system pressure exceeds a given over-pressure.
  • the drawings show a pressure cap for use on the coolant radiator or the coolant expansion tank of a motor vehicle, constructed in accordance with the invention.
  • the cap is made largely out of plastics, and consists of a cap member 11, a container member 12, and a number of components concerned with sealing the cap assembly to a filler neck (not shown) and with breaking the seal when the under-or over-pressures within the seal system exceed predetermined values.
  • the cap member 11 is screw threaded internally to engage with a corresponding external thread on the filler neck.
  • the cap member has four lobes 13 whose external shape enables the cap to be more readily gripped, and whose internal shape constitutes a break in the screw thread to permit flow of gas or vapour through the cap in circumstances to be described hereinafter.
  • Container member 12 has an external thread similar to that of the filler neck and which likewise engages the internal thread of the pressure cap 11. The thread on the container member 12 is broken at points corresponding to the positions of the lobes 13 to permit a continuation of the internal passages defined by the lobes.
  • the container member is assembled to the cap member by screwing it into the cap until an annular surface 14 on the container member engages a corresponding annular surface 15 on the cap member.
  • Surfaces 14 and 15 each have complementary sloped teeth 16 which permit the container to be screwed into the cap member but prevent dissassembly, thus providing a totally mechanical joining of the components.
  • the annular surface 14 on the cap is interrupted at intervals by cut-outs 17 at locations corresponding to the breaks in the screw thread, to permit communication with the interior of the chamber 18 defined by the cap and container. Communication between the chamber 18 and the interior of the filler neck is normally prevented by a seal member 19.
  • Seal member 19 constitutes a common seal member for both a valve having a seat 20 for the relief of over-pressure in the filler neck and a vent valve 21 for permitting the inflow of air to the filler neck in the event of an excessive under-pressure in the cooling system.
  • the common seal 19 lifts off the valve seat 20 against the action of a coil spring 22 acting on a spring plate 23. Vent valve 21 is biased into its clos ed position by a conical compression spring 24 which acts between spring plate 23 and a flange 25.on a rivet 26 which retains the vent valve 21.
  • a vent button 27 is located in a recess in the upper surface of the cap member 11.
  • the vent button is biased upwardly by an elastomeric washer 28 which also constitutes a seal against the excape of gas or vapour attempting to pass through a hole 29 in the cap through which the vent button extends.
  • the vent button is retained in place by a projection 30 from the shaft of the vent button, which projection is resiliently biased radially outwardly of the shaft and which is so shaped that upon assembly of the button to the cap it automatically retracts into the shaft until it has passed through the hole 29, at which point it springs outwardly to prevent dissassembly of the button from the cap.
  • the spring forces are arranged to ensure that the cap maintains a suitable seal on the filler neck over a pre-determined range of working pressures of the cooling system.
  • the cooling system may be vented by the illustrated cap by depressing the vent button 27. This unseats the vent valve 21 communicating the interior of the filler neck with the chamber 18 and thus by way of the lobes 13 to atmosphere. Any escaping vapour or liquid is thus deflected downwardly through the lobes away from the users hand which need only be in contact with the vent button. Owing to the relatively small size of the vent valve it is readily possible for the user to lift it from its seat against any over-pressure in the filler neck.
  • vent button could be replaced by other suitable external means which are operable on the vacuum relief valve of the cap to vent the cooling system.
  • the cap could be provided with a deformable top which could be pressed inwardly to engage the rivet 26 and displace the vent valve.
  • the container member 12 effects a multiple role in so far as it acts as a housing for the components of the cap, as a seat for the over-pressure relief valve, and as a seat for the seal onto the filler neck, it need not provide all of these functions to gain benefit from its mode of retention by the screw threads of the cap member 11, and by its mechanical retention against dissassembly.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Closures For Containers (AREA)
EP83303216A 1982-06-22 1983-06-03 Bouchon sous pression Withdrawn EP0097443A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB8217975 1982-06-22
GB08217975A GB2122310B (en) 1982-06-22 1982-06-22 Pressure cap

Publications (1)

Publication Number Publication Date
EP0097443A1 true EP0097443A1 (fr) 1984-01-04

Family

ID=10531195

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83303216A Withdrawn EP0097443A1 (fr) 1982-06-22 1983-06-03 Bouchon sous pression

Country Status (2)

Country Link
EP (1) EP0097443A1 (fr)
GB (1) GB2122310B (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2202031A (en) * 1987-03-09 1988-09-14 Lin Shinq Juh Gas flow control assembly
EP0509223A2 (fr) * 1991-03-08 1992-10-21 B L A U GmbH Bouchon pour un récipient, notamment pour un radiateur d'un véhicule automobile
WO1995014620A1 (fr) * 1993-11-22 1995-06-01 Reutter Metallwarenfabrik Gmbh Bouchon de fermeture vissable sur un col reservoir
US8353418B2 (en) 2010-07-23 2013-01-15 Bemis Manufacturing Company Pressure relief cap
US9296543B2 (en) 2012-07-31 2016-03-29 Heb Grocery Company, Lp Vacuum cooler

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2174797B (en) * 1985-05-02 1988-12-14 Adwest Group P L C Pressure relief/sealing caps

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3086677A (en) * 1961-02-13 1963-04-23 Anton W Konchan Push button radiator pressure cap
US3111239A (en) * 1961-05-19 1963-11-19 Murray Corp Pressure vacuum-relief closure cap for automobile radiator
GB1034986A (en) * 1963-09-12 1966-07-06 Dole Valve Co Improvements in or relating to vent caps, particularly for radiators
US3830398A (en) * 1972-11-29 1974-08-20 Orion Industries Pressure relief radiator cap

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1050080A (fr) * 1900-01-01
US3074588A (en) * 1960-07-11 1963-01-22 Stant Mfg Company Inc Safety radiator pressure caps
FR1406650A (fr) * 1964-06-11 1965-07-23 Chausson Usines Sa Bouchon pour la fermeture des embases de remplissage de radiateurs et applications analogues
GB1333944A (en) * 1970-08-19 1973-10-17 Ellison Ltd G G Breather filller caps
FR2221938A5 (fr) * 1973-03-14 1974-10-11 Journee Paul

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3086677A (en) * 1961-02-13 1963-04-23 Anton W Konchan Push button radiator pressure cap
US3111239A (en) * 1961-05-19 1963-11-19 Murray Corp Pressure vacuum-relief closure cap for automobile radiator
GB1034986A (en) * 1963-09-12 1966-07-06 Dole Valve Co Improvements in or relating to vent caps, particularly for radiators
US3830398A (en) * 1972-11-29 1974-08-20 Orion Industries Pressure relief radiator cap

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2202031A (en) * 1987-03-09 1988-09-14 Lin Shinq Juh Gas flow control assembly
GB2202031B (en) * 1987-03-09 1991-11-13 Lin Shinq Juh Gas flow control assembly
EP0509223A2 (fr) * 1991-03-08 1992-10-21 B L A U GmbH Bouchon pour un récipient, notamment pour un radiateur d'un véhicule automobile
EP0509223A3 (fr) * 1991-03-08 1992-10-28 B L A U GmbH Bouchon pour un récipient, notamment pour un radiateur d'un véhicule automobile
WO1995014620A1 (fr) * 1993-11-22 1995-06-01 Reutter Metallwarenfabrik Gmbh Bouchon de fermeture vissable sur un col reservoir
US8353418B2 (en) 2010-07-23 2013-01-15 Bemis Manufacturing Company Pressure relief cap
US9296543B2 (en) 2012-07-31 2016-03-29 Heb Grocery Company, Lp Vacuum cooler
US9932165B2 (en) 2012-07-31 2018-04-03 Heb Grocery Company, Lp Vacuum cooler
US10464734B2 (en) 2012-07-31 2019-11-05 Heb Grocery Company, Lp Vacuum cooler
US10486887B2 (en) 2012-07-31 2019-11-26 Heb Grocery Company, Lp Vacuum cooler
US10486888B2 (en) 2012-07-31 2019-11-26 Heb Grocery Company, Lp Vacuum cooler
US11319137B2 (en) 2012-07-31 2022-05-03 H-E-B, Lp Vacuum cooler
US11554907B2 (en) 2012-07-31 2023-01-17 H-E-B, Lp Vacuum cooler

Also Published As

Publication number Publication date
GB2122310B (en) 1985-11-27
GB2122310A (en) 1984-01-11

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Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): DE FR GB IT

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 19841214

RIN1 Information on inventor provided before grant (corrected)

Inventor name: LARDNER, GRAHAM GERALD

Inventor name: PRICE, HENRY CLIFFORD REES