AU2006100395A4 - Pressure Relief Valve - Google Patents
Pressure Relief Valve Download PDFInfo
- Publication number
- AU2006100395A4 AU2006100395A4 AU2006100395A AU2006100395A AU2006100395A4 AU 2006100395 A4 AU2006100395 A4 AU 2006100395A4 AU 2006100395 A AU2006100395 A AU 2006100395A AU 2006100395 A AU2006100395 A AU 2006100395A AU 2006100395 A4 AU2006100395 A4 AU 2006100395A4
- Authority
- AU
- Australia
- Prior art keywords
- valve
- air bleed
- piston
- cap
- tyre
- 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.)
- Expired
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
-
- 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
- B60C29/068—Pressure relief devices, i.e. safety devices for overpressure
-
- 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
-
- 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
Description
Regulation 3.2
AUSTRALIA
PATENTS ACT, 1990 COMPLETE SPECIFICATION FOR AN INNOVATION PATENT
ORIGINAL
Name of Applicant: Actual Inventors: Address for service in Australia: Invention Title: STAUN PTY LTD Stephen John Furlonger, Vaughan Grant A J PARK, Level 11, 60 Marcus Clarke Street, Canberra ACT 2601, Australia Pressure Relief Valve The following statement is a full description of this invention, including the best method of performing it known to us.
IP Australia 29 JUN 2006 FIELD OF INVENTION 29 JUN 2006
P&S
646977 .DOC FIELD OF INVENTION This invention relates to pressure relief valves and has particular relevance to valves suitable for lowering pressures within pneumatic tyres.
BACKGROUND OF THE INVENTION It is important for motorists to regularly check that tyre pressures are even and in accordance with the specified pressures for particular driving conditions and circumstances.
Most service stations provide a free air service where motorists are able to check their air pressures and if necessary make adjustments to same.
Whilst increasing tyre pressures is a relatively straight forward matter, reducing pressures to a required level requires the motorist to depress the needle of a two way valve of each tyre to allow air to bleed and then to recheck with a pressure gauge that an appropriate pressure has been reached.
Most four-wheel drive and terrain vehicles are designed to be driven in off road situations with lower than normal tyre pressures.
Because the off road usages are generally in remote areas where air pumps and gauge facilities are unlikely to be available, in order to lower tyre pressures it is necessary for a driver to manually bleed off air from each tyre and to constantly check with a gauge the statues of each tyre during the process.
It is easy for a motorist in these circumstances to inadvertently reduce the pressure to below the required rate. It would be convenient in these circumstances for motorists to have available a pressure relief valve which can be applied to the valve of each tyre of his vehicle and which ensure that the exact lower tyre pressure he requires is achieved speedily and accurately without the danger of deflation below an acceptable level.
In our Australian Petty Patent no. 719902 we have described our earlier pressure relief valve which, although functional, was slow to operate in terms of the time it took to deflate a tyre and to shut off once the required level of deflation was reached.
It is an object of the present invention to provide an improved pressure relief valve which can be applied to the vlave of a pneumatic tyre and which will provide for speedy and accurate deflation of the tyres to a predetermined level.
646977 1.DOC Further objects and advantages of the present invention will become apparent on the ensuring description which is given by way of example.
BRIEF DESCRIPTION OF THE INVENTION According to the present invention there is provided a pressure relief valve comprising: a substantially elongate valve body having an internal air bleed chamber, an adjacent air bleed passage and a tyre valve engagement means, a cap adjustably attached to an open end of the air bleed chamber, a valve piston within the air bleed chamber said valve piston having a piston head which is adapted to engage with a valve seat located between the air bleed chamber and the air bleed passage and an extending piston stem the free end of which extends to an engages with a centralised aperture in the cap, a biasing spring mounted on the valve piston stem which is compressed between the cap and the valve piston and applies a continuous closing bias to the valve head, an air bleed hole in the wall of the valve body which is above and in close proximity to the valve seat, and a strike pin extending from the tyre valve engagement means the arrangement and construction being such that when the valve body is coupled to a two-way valve of a pneumatic tyre and the strike pin contracts a needle within the twoway valve pressures within the tyre can be reduced in proportion with a predetermined compression applied to the spring, characterised in that the air bleed chamber and cap have complimentary external and internal threads and the compression of the spring of the valve is adjusted according to the degree that the cap is advanced on the air bleed chamber thread.
The valve can be a one piece metal valve having a valve head and a valve stem extending from the head providing a first spring mounting portion and a second cap engaging portion or reduced diameter which extends from the said first spring mounting portion.
646977 1.DOC The valve head can be close tolerance sliding fit in the internal air bleed chamber.
The air bleed hole can be approximate 1.5mm in diameter and is positioned approximately 1.25nn from top edge of the valve seat.
The valve head can be cylindrical and approximately 6mm deep.
The valve piston can be provided with a piston seal mounting at the end opposite to the stem.
BRIEF DESCRIPTION OF THE DRAWINGS Aspects of the present invention will now be described by way of example only with reference to the accompanying drawings in which; Figure 1 is a bottom view of a pressure relief valve in accordance with one aspect of the present invention, and Figure 2 is a side view of a pressure relief valve of Figure 1, and Figure 3 is a plan view of the pressure relief valve of Figure 1, and Figures 4 and 4a are full and partial cross sections respectively of the valve of the present invention taken at IV:IV of Figure 3.
Figures 5, 6 and 7 are side, long-sectional and end views of a valve body according to the present invention, and Figures 8 and 9 are side and end views of the valve of the valve piston for the valve of the present invention.
With respect to the relief valve in accordance with the present invention can comprise drawings a pressure a substantially elongate valve body generally indicated by arrow 1 having an internal bleed chamber 2 and adjacent air bleed passage 3 and tyre valve engagement means 4.
The valve body is provided with a cap 5 which is adjustably mounted to an open end of the air bleed chamber 2.
A valve piston generally indicated by arrow 6 is disposed centrally within the air bleed chamber said valve having a valve head 7 which is adapted to engage and seal a valve seat 8 located between the air bleed chamber 2 and the air bleed passage 3 and an 646977 1.DOC extending valve stem 9 the free end 9a of which extends to and is reciprocal within a centralised aperture 10 in the cap A biasing compression spring 11 is mounted on the valve stem 9 and the spring is compressed between the cap 5 and the valve head 7 and applies a constant closing bias to the valve.
At the base of the air bleed chamber 3 there is provided one or more air passages 12 are provided and a centralised strike pin 13 extends outwardly the arrangement and construction being such that when the valve body 1 is coupled to a two way valve 14 and the strike pin 13 contacts the needle 15 of the valve pressures within the tyre (associated with the valve 14) can be reduced in proportion compression applied to the spring.
The air bleed chamber 2 and the cap 5 have complimentary external and internal threads 16 so that the position of the cap and thus the pressure on the spring can be adjusted to predetermined levels.
A locking washer 17 can also be fitted to the thread 16 to secure the cap in its desired position.
As the cap is wound off the thread 16 a predetermined distance pressure on the spring 11 is reduced accordingly.
The surfaces of the thread and/or body or cap be marked to assist the user to select pressure ranges for the position and therefore the pressure on the compression spring can be adjusted by the use of a gauge or the like equating the distance S with specific pressures.
The internal walls of the engagement means 4 can be provided with a standardised internal thread which matches with the standard external thread of a two-way valve.
The body 1 of the valve can be moulded or fabricated or machined from metal.
The integrity of the valve seal can be enhanced by the provision of a compressible seal 18 fixed on an extending portion 9b of the stem 9 below the valve head 7.
The valve head 7 is a close tolerance sliding fit in the bore of the air bleed chamber and may be provided with compression rings or seals (not shown) similar to the pistons of a combustion engine.
646977 .DOC Where this is the case an air bleed hole 19 can be provided in the wall of the valve body so that pressures within the chambers can be directly vented to atmosphere which will considerably reduce the time required to bleed air from a tyre to reach the required and predetermined pressure.
Our trials with the valve have indicated that tolerances and sizes of the valve componentry are relatively critical.
The depth of the valve head (piston) should be approximately 6mm when the air bleed chamber is approximately 16mm deep and 10mm in diameter.
The size of the bleed hole is ideally The spacing of the air bleed hole from the top edge of the valve seat should not exceed 1.25mm.
The tolerance between the outer diameter of the piston and the inner diameter of the air bleed chamber is minimal and in the order of .04mm.
Figures 5 to 7 of the drawings show the valve body in enlarged detail.
The spacing 51 between the top edge of the valve seat 8 is approximately 1.25mm.
It is preferred that the body and valve piston 6 illustrated by figures 8 and 9 is manufactured in similar metals.
The present invention allows accurate adjustment of tyre pressures, can be readily preset the user and reduce pressures in tyres can be elevated by the user by simply removing the relieve valves and re-inflating the tyres.
Aspects of the present invention have been described by way of example only and it will be appreciated that modifications and additions thereto may be made without departing from the scope thereof, as defined in the appended claims.
646977 I.DOC
Claims (4)
1.
2. A pressure relief valve comprising; a substantially elongate valve body having an internal air bleed chamber, an adjacent air bleed passage and a tyre valve engagement means, a cap adjustably attached to an open end of the air bleed chamber, a valve piston within the air bleed chamber said valve piston having a piston head which is adapted to engage with a valve seat located between the air bleed chamber and the air bleed passage and an extending piston stem the free end of which extends to and engages with a centralised aperture in the cap, a biasing spring mounted on the valve piston stem which is compressed between the cap and the valve head and applies a continuous closing bias to the valve piston, an air bleed hole in the wall of the valve body which is above and in close proximity to the valve seat, and a strike pin extending from the tyre valve engagement means the arrangement and construction being such that when the valve body is coupled to a two-way valve of a pneumatic tyre and the strike pin contacts a needle within the two-way valve pressures within the tyre can be reduced in proportion with a predetermined compression applied to the spring, characterised in that the air bleed chamber and cap have complimentary external and internal threads and the compression of the spring of the valve is adjusted according to the degree that the cap is advanced on the air bleed chamber thread. A pressure relief valve as claimed in claim 1 wherein the valve piston is a one piece metal valve having a valve head and a valve stem extending from the head providing a first spring mounting portion and a second cap engaging portion of reduced diameter which extends from the said first spring mounting 646977 1.DOC portion.
3. A pressure valve as claimed in claim 1 wherein the valve head is a close tolerance sliding fit in the internal air bleed chamber.
4. A pressure relief valve as claimed in claim 1 wherein the air bleed hole is approximately 1.5mm in diameter and is spaced approximately 1.25mm from the top edge of the valve seat. A pressure relief valve as claimed in claim 1 wherein the valve piston is provided with a piston seal mounting at the end opposite to the stem. 646977 L.DOC
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AUPR2918A AUPR291801A0 (en) | 2001-02-06 | 2001-02-06 | Pressure relief valve |
| AUPR2918 | 2001-02-06 | ||
| PCT/AU2002/000112 WO2002062595A1 (en) | 2001-02-06 | 2002-02-06 | Pressure relief valve |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AU2002229404A Division AU2002229404B2 (en) | 2001-02-06 | 2002-02-06 | Pressure relief valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| AU2006100395A4 true AU2006100395A4 (en) | 2006-07-27 |
Family
ID=3826944
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AUPR2918A Abandoned AUPR291801A0 (en) | 2001-02-06 | 2001-02-06 | Pressure relief valve |
| AU2006100395A Expired AU2006100395A4 (en) | 2001-02-06 | 2006-05-16 | Pressure Relief Valve |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AUPR2918A Abandoned AUPR291801A0 (en) | 2001-02-06 | 2001-02-06 | Pressure relief valve |
Country Status (2)
| Country | Link |
|---|---|
| AU (2) | AUPR291801A0 (en) |
| WO (1) | WO2002062595A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112032372A (en) * | 2020-09-07 | 2020-12-04 | 内蒙古第一机械集团股份有限公司 | Inflation and deflation valve for vehicle tire |
Families Citing this family (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ITBS20060084A1 (en) * | 2006-04-12 | 2007-10-13 | Unival Srl | BREATHER VALVE AND SAFETY PARTICULARLY FOR THERMOSIPHON |
| WO2007136377A1 (en) * | 2006-05-23 | 2007-11-29 | Taprite-Fassco Manufacturing Inc. | Pressure relief valve |
| WO2008042994A2 (en) | 2006-10-03 | 2008-04-10 | John Kostin Milanovich | Inflation stem with blow-off valve to prevent overinflation |
| CN100455861C (en) * | 2007-08-10 | 2009-01-28 | 四川大学 | General explosion-proof safe air valve for automobile tyre |
| CA2879072C (en) | 2012-07-13 | 2018-05-15 | Dana Heavy Vehicle Systems Group, Llc | Valve assemblies and methods of inflating or deflating a tyre |
| WO2015103018A1 (en) | 2014-01-03 | 2015-07-09 | Dana Heavy Vehicle Systems Group, Llc | Assembly for a central tire inflation system |
| CN106461098B (en) | 2014-06-30 | 2019-04-23 | 德纳重型车辆系统集团有限责任公司 | Valve module for tire pressure management system |
| EP2990704B1 (en) * | 2014-08-27 | 2017-07-26 | Apex Medical Corp. | Pneumatic valve and air mattress assembly having pneumatic valve |
| US10836220B2 (en) | 2015-08-06 | 2020-11-17 | Dana Heavy Vehicle Systems Group, Llc | Control and supply valve assembly for a tire pressure management system |
| US10843511B2 (en) | 2015-08-06 | 2020-11-24 | Dana Heavy Vehicle Systems Group, Llc | Channel valve assembly for a tire pressure management system |
| US10214059B2 (en) | 2015-10-16 | 2019-02-26 | Dana Heavy Vehicle Systems Group, Llc | Tire pressure management system and method of decreasing tire pressure |
| US9802449B1 (en) | 2016-01-28 | 2017-10-31 | Harry Lewellyn | Controlled tire deflation valve system |
| US10864783B2 (en) | 2016-01-29 | 2020-12-15 | Dana Heavy Vehicle Systems Group, Llc | Valve assembly for a tire inflation system |
| BR112018070797A2 (en) | 2016-04-11 | 2019-02-12 | Bridgestone Americas Tire Operations, Llc | mounting rod for a inflation valve and a tire pressure monitoring system sensor |
| TWM559262U (en) | 2018-01-12 | 2018-05-01 | 巨大機械工業股份有限公司 | Bicycle and tire structure |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5694969A (en) * | 1996-01-22 | 1997-12-09 | Devuyst; Christopher | Pressure relief tire valve |
| US6079519A (en) * | 1998-11-12 | 2000-06-27 | Deere & Company | Combined fill and relief valve |
| AU719902B3 (en) * | 1999-10-07 | 2000-05-18 | Staun Pty Ltd | Pressure relief valve |
-
2001
- 2001-02-06 AU AUPR2918A patent/AUPR291801A0/en not_active Abandoned
-
2002
- 2002-02-06 WO PCT/AU2002/000112 patent/WO2002062595A1/en not_active Application Discontinuation
-
2006
- 2006-05-16 AU AU2006100395A patent/AU2006100395A4/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112032372A (en) * | 2020-09-07 | 2020-12-04 | 内蒙古第一机械集团股份有限公司 | Inflation and deflation valve for vehicle tire |
| CN112032372B (en) * | 2020-09-07 | 2022-08-26 | 内蒙古第一机械集团股份有限公司 | Inflation and deflation valve for vehicle tire |
Also Published As
| Publication number | Publication date |
|---|---|
| AUPR291801A0 (en) | 2001-03-01 |
| WO2002062595A1 (en) | 2002-08-15 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FGI | Letters patent sealed or granted (innovation patent) | ||
| PC | Assignment registered |
Owner name: FURLONGER, STEVEN Free format text: FORMER OWNER WAS: STAUN PTY LTD |
|
| MK22 | Patent ceased section 143a(d), or expired - non payment of renewal fee or expiry |