WO1986002984A1 - Valve de pneumatique - Google Patents

Valve de pneumatique Download PDF

Info

Publication number
WO1986002984A1
WO1986002984A1 PCT/US1984/001842 US8401842W WO8602984A1 WO 1986002984 A1 WO1986002984 A1 WO 1986002984A1 US 8401842 W US8401842 W US 8401842W WO 8602984 A1 WO8602984 A1 WO 8602984A1
Authority
WO
WIPO (PCT)
Prior art keywords
sleeve
hollow
valve
pressure area
high pressure
Prior art date
Application number
PCT/US1984/001842
Other languages
English (en)
Inventor
Philip L. Reid
Original Assignee
Reid Philip L
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 Reid Philip L filed Critical Reid Philip L
Priority to PCT/US1984/001842 priority Critical patent/WO1986002984A1/fr
Priority to EP19840904295 priority patent/EP0201483A1/fr
Publication of WO1986002984A1 publication Critical patent/WO1986002984A1/fr

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

Definitions

  • This invention relates generally to the art of automobile and truck tires and relates more particularly to a novel valve assembly therefor.
  • U. S. Patent No. 1,956,981 to Crowley discloses a valve mechanism which attaches over an existing valve stem and has a sealing member which is an attempt to circumvent the problems associated with the failure to reattach end caps during normal maintenance.
  • the mechanism disclosed in this patent however is still subject to fouling by road grime and soil.
  • U. S. Patent No. 614,968 to Mohs discloses the use of a flexible sleeve with slits for the introduction and exhausting of pressurized fluid. Normally the high pressure side of the valve collapses the sleeve about a
  • the tube is expanded to permit the pressurized fluid to flow through slits and to exit the pneumatic tire.
  • U. S. Patent No. 404,400 to DeWolfe discloses a valve for a bicycle tire comprising a central plug having an axial orifice communicating with a circumferential groove for the purpose of inflating the bicycle tire through the orifice groove. The tire is prevented from deflating by the collapse around the circumferential groove of a rubber sleeve.
  • a valve having an elastomeric sleeve surrounding an axial pin which passes through one end of the sleeve and extends through the other end thereof with an enlarged end biased against the opening at the other end of the sleeve to prevent egress of fluid through the .sleeve. Exhausting of • fluid is permitted when the enlarged end is moved away from the other end against the biasing thereof in order to permit fluid to flow between the pin and the sleeve.
  • Figure 1 is a cross section view of a valve in
  • Figure 2 is a view similar to Figure 1 showing the valve in the open position.
  • FIG. 3 is an assembly view of the valve in accordance with this invention.
  • a valve for use on vehicle tires may be made substantially resistant to any adverse effects associated with exposure to road soil and grime.
  • this advantageous and surprising result is brought about by the ability of the valve to permit passage therethrough of such soil and grime while having a large sealing area to prevent leakage.
  • the sealing area in accordance with this invention is such that, any localized contamination would not have a significant effect upon the overall sealing capability of the valve.
  • FIG. 1 of the drawings illustrates valve 1 in the normally closed position in accordance with this invention.
  • the valve 1 comprises a housing generally designated as 3 but which as illustrated here includes a portion of a conventional valve stem 5 as well as a valve stem extension
  • valve stem extension 7 is the preferred form of this invention wherein the valve within the valve stem extension is merely an addition to the conventional valve stem. It is understood however that the valve in accordance with this invention may be produced as an original valve so as to have a more permanent connection between components thereof.
  • Housing 3 generally defines through the hollow 9 thereof a source of communication between a normally high pressure area 11 and low pressure area 13 when the valve in accordance with this invention is in an open position, but which is otherwise noncommunicative between the areas when the valve is in the normally closed position as is illustrated in Figure 1.
  • a generally hollow elastomeric sleeve 15 which is hermetically engaged with the hollow 9 at 17.
  • the hermetic engagement as illustrated in Figure 1 may comprise the use of an adhesive or mechanical interlock at one end 19 of elastomeric sleeve 15 and mechanical gripping between conventional valve stem 5 and valve stem extension 7.
  • the other end 21 of sleeve 15 is generally spaced from the interior wall of housing 3 so as to have a space 23 defined between the interior wall and the sleeve which is generally in fluid communication with high
  • sleeve 15 is in a generally collapsed state due to the high pressure from high pressure area 11.
  • Figure 2 of the drawings illustrates sleeve 15 in a non- collapsed state.
  • Sleeve 15 may be constructed of an elastomeric material which may be any of the conventional elastomeric materials such as styrene butadiene rubber, polyisoprene, ethylenepropylene-diene, isoprene polymer, butyl rubber, polyacrylonitrile , polysiloxane , epichlorolhydrin or polyurethane.
  • elastomeric material such as styrene butadiene rubber, polyisoprene, ethylenepropylene-diene, isoprene polymer, butyl rubber, polyacrylonitrile , polysiloxane , epichlorolhydrin or polyurethane.
  • sleeve 15 Within sleeve 15 is a cylindrical pin 25 which is axially located within the hollow of the elastomeric sleeve 15. The diameter of pin 25 is less than th * e inside diameter of sleeve 15. This is best illustrated in Figure 2 of the drawings wherein sleeve 15 is not in contact with pin 25.
  • Pin 25 has an enlarged end 27 which is of a greater diameter than the inside diameter of sleeve 15 which extends beyond the other end 21 thereof.
  • Enlarged end 27 is normally biased against the other end 21 of sleeve 15 by biasing means 29. Such biasing causes enlarged end 27 when in engagement with end 21 to preclude fluid communication between high pressure area 11 and low pressure area 13. It has surprisingly been found that when this engagement
  • the second seal is formed by the collapse of sleeve 15 about pin 25 due to the pressure differential therebetween.
  • Pin 25 extends through opening 31 for purposes of contacting the central pin of a conventional air hose.
  • the inflation mode of the valve in accordance with this invention may be best seen in Figure 2 of the drawings wherein pin 25 is in a depressed state such that enlarged end 27 is disengaged from contact with end 21 of sleeve 15. This dislodgement is against the biasing of biasing means 29 such that once the force associated with movement of pin 25 is released, enlarged end 27 again recontacts end 21 of sleeve 15.
  • the biasing means 29 as illustrated here is a compression spring which forces end 33 of pin 25 through opening 31.
  • any debris which enters the valve structure is either lodged at some point which is unharmful or is swept entirely through the valve into the high pressure area. If any debris is lodged on the interior surface of sleeve 15, it will be non-deleterious to the sealing function thereof since the sealing area defined by the contact of the inner walls of sleeve 15 and pin 25 is extensive in comparison to the size of any debris which might fit through opening 31.
  • FIG. 3 An assembly view is illustrated in Figure 3 of the drawings. It should be noted that pin 25 preferably is assembled in two pieces with end piece 35 being adhered or mechanically joined. Also illustrated in Figure 3 is spacer 37 which may be utilized in order to assure a proper positioning between conventional stems 5 and stem extension 7. The spacer 37 is utilized to prevent undue distortion of end 19 when clamped between extension 7 and conventional stem 5. An alternative is to provide a conical conforming abutment 38 to extension 7 so as to maintain the shape of end 19 regardless of the degree of compression ⁇ aused by the closeness of extension 7 to stem 5.
  • stem extension 7 preferably contains no external threads since the valve is equally efficacious with or without the presence of an end cap. However, it is within the scope of this invention to include an internally threaded end and an end cap thereon.
  • An operable valve in accordance with this invention was constructed utilizing a stainless steel pin with an
  • An unexpected phenomenon and advantage of this invention is that the filling rate lessens as the pressure within the tire increases. This facilitates fine tuning of the tire pressure at desired pressure while permitting rapid inflation at lesser pressures.
  • valve in accordance with this invention provides a valve which is substantially leak proof, resistant to road soil and grime, and obviates the need for an end cap.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Check Valves (AREA)

Abstract

Une valve (1) sensiblement à l'épreuve de fuites et résistante au sol et aux saletés de la route comprend un manchon rentrable (15) et un élément de goupille (25) qui empêche des fuites. Le mouvement de la goupille (25) permet toutefois de manière efficace de gonfler et de dégonfler la chambre à air en déplaçant une extrémité élargie (27) et en l'éloignant d'une extrémité (21) du manchon (15).
PCT/US1984/001842 1984-11-09 1984-11-09 Valve de pneumatique WO1986002984A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PCT/US1984/001842 WO1986002984A1 (fr) 1984-11-09 1984-11-09 Valve de pneumatique
EP19840904295 EP0201483A1 (fr) 1984-11-09 1984-11-09 Valve de pneumatique

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/US1984/001842 WO1986002984A1 (fr) 1984-11-09 1984-11-09 Valve de pneumatique

Publications (1)

Publication Number Publication Date
WO1986002984A1 true WO1986002984A1 (fr) 1986-05-22

Family

ID=22182326

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1984/001842 WO1986002984A1 (fr) 1984-11-09 1984-11-09 Valve de pneumatique

Country Status (2)

Country Link
EP (1) EP0201483A1 (fr)
WO (1) WO1986002984A1 (fr)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US560492A (en) * 1896-05-19 Valve for pneumatic tires
US1969224A (en) * 1930-12-29 1934-08-07 Sterling Automtove Products Co Tire valve
US2188713A (en) * 1937-06-21 1940-01-30 Jonkins Bros Valve core, container, and stem
CA496783A (fr) * 1953-10-13 H. Mayer Charles Noyaux de valves pour tiges de valves de pneumatiques
US3310064A (en) * 1964-01-22 1967-03-21 Nat Distillers Chem Corp Valve core
US4481970A (en) * 1982-06-10 1984-11-13 Jack H. Zabel, Jr. Tire valve

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US560492A (en) * 1896-05-19 Valve for pneumatic tires
CA496783A (fr) * 1953-10-13 H. Mayer Charles Noyaux de valves pour tiges de valves de pneumatiques
US1969224A (en) * 1930-12-29 1934-08-07 Sterling Automtove Products Co Tire valve
US2188713A (en) * 1937-06-21 1940-01-30 Jonkins Bros Valve core, container, and stem
US3310064A (en) * 1964-01-22 1967-03-21 Nat Distillers Chem Corp Valve core
US4481970A (en) * 1982-06-10 1984-11-13 Jack H. Zabel, Jr. Tire valve

Also Published As

Publication number Publication date
EP0201483A1 (fr) 1986-11-20

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