Combined valve-pressure measurement device for a tyre

• US 20030154779A1
• Filed: 01/15/2003
• Published: 08/21/2003
• Est. Priority Date: 02/20/2002
• Status: Abandoned Application

• Current Assignee: Polenghi Mario SRL
• Original Assignee: Polenghi Mario SRL
• Inventors: Polenghi, Luigi
• Application Number:
  US10/342,207
• Publication Number:
  US 20030154779A1
• Time in Patent Office: Days
• US Class Current: 73/146.8
• CPC Class Codes: B60C 23/0408 transmitting the signals by non-mechanical means from the wheel or tyre to a vehicle body mounted receiver
• CPC Class Codes: B60C 23/0494 Valve stem attachments positioned inside the tyre chamber

Abstract

The combination (10) comprises an inflation valve (12) for a vehicle tyre, and a housing (14; 14A) for a device for measuring the inflation state of the tyre. The valve (12) is insertable through a through hole (15) provided in the wheel rim (16) on which the tyre is mounted. A gasket (18) is interposed between the body (20) of the valve (12) and the wheel rim (16). The body (20) of the valve (12) is laterally threaded on its outside to enable a nut (28) to be screwed thereon to fix the valve (12) to the wheel rim (16). The body (20) terminates internally with a head (22). Within the housing (14; 14A) there is provided a through aperture (26; 26A) through which the body (20) can pass but not the head (22). Between the housing (14; 14A) and the gasket (18) there is interposed an annular counteracting element (30) to ensure the sealing of the gasket (18) when the fixing nut (28) has been tightened. As a consequence of the tightening of the fixing nut (28) the head (22) cooperates with the corresponding part (24) of the inner surface of the housing (14; 14A) to fix the housing (14; 14A) to the body (20) in such a manner as to prevent the housing from coming into contact with the wheel rim (16).

Claims

1. A combination (10;

10A) comprising an inflation valve (12) for a vehicle tyre, and a housing (14;

14A) for a device for measuring the inflation state of the tyre, the valve (12) being mountable through a through hole (15) provided in the wheel rim (16) which carries the tyre, a gasket (18) being interposed between the body (20) of the valve (12) and the wheel rim (16), the body (20) of the valve (12) being laterally threaded on its outside to enable a nut (28) to be screwed thereon to fix the valve (12) to the wheel rim (16), the body (20) terminating internally with a head (22), characterised in that;

within the housing (14;

14A) there is provided a through aperture (26;

26A) through which the body (20) can pass but not the head (22);

between the housing (14;

14A) and the gasket (18) there is interposed an annular counteracting element (30) to ensure the sealing of the gasket (18) when the fixing nut (28) has been tightened;

as a consequence of the tightening of the fixing nut (28) the head (22) cooperates with the corresponding part (24) of the inner surface of the housing (14;

14A) to fix the housing (14;

14A) to the body (20) in such a manner as to prevent the housing from coming into contact with the wheel rim (16);

2. A combination (10;

10A) as claimed in claim 1, wherein that surface part (23) of the head (22) which cooperates with the inner surface part of the housing (14) has a convexity facing the gasket (18), the surface parts (23, 24) being spherical or cylindrical and mating in order to be able to slide one on the other within a determined range, the through aperture (26;

26A) provided in the housing (14;

14A) being in the form of a slot to enable the orientation of the housing (14;

14A) relative to the valve (12) to be adjusted by sliding the two mating surface parts (23, 24) relative to each other.

3. A combination (10A) as claimed in claim 2, wherein the slot (26A) is open at one of its ends to enable the body (20) of the valve (12) to be inserted laterally into it (26A).

4. A combination (10;

10A) as claimed in claim 1, wherein the channel (38) of the valve (12) through which the tyre inflation gas passes opens at the free end (36) of the head (22), in a coaxial position.

5. A combination (10;

10A) as claimed in claim 4, wherein the head (22) presents engagement means (40A, 40B, 40C) to facilitate the tightening of the fixing nut (28).

6. A combination (10;

10A) as claimed in claim 5, wherein the engagement means comprise a hexagonal cavity (40A) coaxial to the mouth of the channel (38) of the valve (12).

7. A combination (10;

10A) as claimed in claim 5, wherein the engagement means comprise, in correspondence with the mouth of the channel (38) of the valve (12), a recess for a screwdriver or a notch (40B) for a coin.

8. A combination (10;

10A) as claimed in claim 5, wherein a radial hole (40C) is provided in the lateral surface (23) of the head (22), for the insertion of a pin.

9. A combination (10) as claimed in claim 2, wherein in the outer surface of the housing (14) there is provided an open cavity (32) for access to the slot (26) provided in the housing (14), the body (20) of the valve (12) being insertable into the slot (26) by way of said cavity (32).

10. A combination (10A) as claimed in claim 3, wherein the cavity (32A) is provided in the outer surface of the housing (14A) to enable the head (22) of the body (20) of the valve (12) to be received when the body (20) is inserted laterally into the open slot (26A).