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GB2285847A - Deflating device for tyres - Google Patents

Deflating device for tyres Download PDF

Info

Publication number
GB2285847A
GB2285847A GB9400486A GB9400486A GB2285847A GB 2285847 A GB2285847 A GB 2285847A GB 9400486 A GB9400486 A GB 9400486A GB 9400486 A GB9400486 A GB 9400486A GB 2285847 A GB2285847 A GB 2285847A
Authority
GB
United Kingdom
Prior art keywords
deflator
valve
bore
air
pin
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Withdrawn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
GB9400486A
Other versions
GB9400486D0 (en
Inventor
John Anthony Smith
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 GB9400486A priority Critical patent/GB2285847A/en
Publication of GB9400486D0 publication Critical patent/GB9400486D0/en
Publication of GB2285847A publication Critical patent/GB2285847A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B27/00—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for
    • B25B27/14—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for assembling objects other than by press fit or detaching same
    • B25B27/24—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for assembling objects other than by press fit or detaching same mounting or demounting valves
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B27/00—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for
    • B25B27/0035—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for motor-vehicles
    • B25B27/0057—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for motor-vehicles for screwing or unscrewing tyre valve caps
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Diaphragms And Bellows (AREA)

Abstract

A deflator for deflating high pressure tyres and comprises a body (1), a head portion (2) at one end, and a threaded bore (3) at the other end. The threaded bore (3) has a pin (4) centrally positioned within the bore (3) to engage a valve titty and cause the release of air through the valve. Channels (5) are circumferentially spaced about the inside of the bore (3) to deflect the released air away from the operator. Instead of the pin (4) a rotatable piston may be provided which unscrews the valve core. <IMAGE>

Description

DEFLATOR The present invention relates to a deflator for deflating tyres and the like. Such a deflator is particularly useful for deflating high pressure tyres, such as aircraft tyres.
When an operator deflates a high pressure tyre, by means of a valve, there is a tendency for the escaping air to be directed at the operator' s hands. High pressure jets of air incident on the skin are likely to cause embolisms.
The invention will now be described, by way of example, with reference to the accompanying drawings, in which : Fig. 1 shows a first embodiment of a deflator according to the present invention.
Fig. 2 shows another embodiment of the present invention.
Fig. 3 shows the deflator of Figure 2 in its position after removing a valve core.
The deflator of figure 1 has a body 1, a head portion 2 at one end and a threaded closed bore 3 at the other end of the body 1. The threaded closed bore 3 screws onto the outside of a valve casing.
A pin 4 is held centrally within the bore 3. Air is released from the valve when the pin 4 engages the valve titty as the bore 3 is screwed onto the valve casing.
Channels 5 are formed in the thread of the bore 3 in order to allow air released from the valve to escape from the bore 3; the air flowing in the direction of the arrows A, and hence away from the operator.
A hexagonal bore 6 is made in the head portion 2 so that the dust cap may be unscrewed or screwed onto the valve casing.
In another embodiment of the present invention, as shown in figures 2 and 3, the pin 4 in Figure 1 is replaced by a piston 7, which slides within a bore 8 in the body 1.
The piston 7 is prevented from sliding out of the bore 8 within the body 1 by first shoulder 9 in the wall of the bore 8 and second shoulder 10.
The piston 7 is sealed to the bore by an "0" ring seal 11. The piston has a forked end 12 which couples with the valve end to unscrew the valve core. Once the valve core has been removed, the air escapes from the tyre at a greater rate than in the embodiment of Figure 1 and so the tyre deflates more quickly.

Claims (11)

1. A deflator for releasing air through a valve of a tyre or the like, the deflator comprising means for engaging the valve to release air through it and means for deflecting the released air away from the user of the deflator.
2. A deflator as claimed in claim 1, wherein the means for engaging the valve to release air through it is a pin.
3. A deflator as claimed in claim 1, wherein said means for deflecting said released air away is a blind bore which surrounds the casing of said valve.
4. A deflator as claimed in claim 3, wherein said bore is threaded to screw onto said valve casing and has one or more passages for releasing said air.
5. A deflator as claimed in claim 4, wherein said passages are channels.
6. A deflator cap as claimed in claim 5, wherein said channels are circumferentially spaced about said bore.
7. A deflator as claimed in any one of claims 1 to 5, wherein said deflator further comprises a body having a bore therein, and the engaging means comprises a piston slidable in said bore of said body.
8. A deflator according to claim 7, wherein said piston has a pin at one end for engaging the titty of said valve.
9. A deflator according to claim 8, wherein said pin end is forked to embrace said titty of valve and said piston is rotatable to unscrew the valve core.
10. A deflator according to any one of claims 1 to 9, wherein a head portion is provided with a hexagonal bore.
11. A deflator as hereinbefore described with reference to figures 1 and 2 or figure 3 of the accompanying drawings.
GB9400486A 1994-01-12 1994-01-12 Deflating device for tyres Withdrawn GB2285847A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB9400486A GB2285847A (en) 1994-01-12 1994-01-12 Deflating device for tyres

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB9400486A GB2285847A (en) 1994-01-12 1994-01-12 Deflating device for tyres

Publications (2)

Publication Number Publication Date
GB9400486D0 GB9400486D0 (en) 1994-03-09
GB2285847A true GB2285847A (en) 1995-07-26

Family

ID=10748679

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9400486A Withdrawn GB2285847A (en) 1994-01-12 1994-01-12 Deflating device for tyres

Country Status (1)

Country Link
GB (1) GB2285847A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT201900006996A1 (en) * 2019-05-20 2020-11-20 Smit Lorenzato Srl Connection head between a device for delivering compressed air and an element in which to blow in said compressed air

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3861249A (en) * 1973-08-14 1975-01-21 Caterpillar Tractor Co Valve core tool with safety bleed
US4660590A (en) * 1986-08-08 1987-04-28 Kenneth E. Berger Inflation pressure regulator
EP0435715A1 (en) * 1989-12-13 1991-07-03 Hutchinson Pressure vessel outlet control device

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3861249A (en) * 1973-08-14 1975-01-21 Caterpillar Tractor Co Valve core tool with safety bleed
US4660590A (en) * 1986-08-08 1987-04-28 Kenneth E. Berger Inflation pressure regulator
EP0435715A1 (en) * 1989-12-13 1991-07-03 Hutchinson Pressure vessel outlet control device

Also Published As

Publication number Publication date
GB9400486D0 (en) 1994-03-09

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Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)