Device for deflating a tire when rotating

• US 5,052,456 A
• Filed: 01/18/1990
• Issued: 10/01/1991
• Est. Priority Date: 07/15/1987
• Status: Expired due to Fees

• Current Assignee: Compagnie Generale Des Etablissements Michelin
• Original Assignee: Compagnie Generale Des Etablissements Michelin
• Inventors: Dosjoub, Andre
• Primary Examiner(s): Ball, Michael W.
• Assistant Examiner(s): Wilber, Gregory J.
• Application Number:
  US07/467,020
• Time in Patent Office: 621 Days
• Field of Search: 152/415, 152/416, 152/417, 152/418, 152/421, 152/422, 152/423, 152/427, 152/509, 152/510, 152/511, 417/229, 417/231, 417/233, 417/474, 417/476, 418/45
• US Class Current: 152/415
• CPC Class Codes: B60C 23/004 the control being done on the wheel, e.g. using a wheel-mounted reservoir
• CPC Class Codes: B60C 23/126 the pumps being mounted on the wheel rims
• CPC Class Codes: B60C 23/135 activated due to tyre deformation
• CPC Class Codes: F04B 45/08 having peristaltic action

Abstract

In order to provide for the deflation of a tire, there is provided an orie in the rim of a wheel, a pusher element extending through the rim in a gas tight manner, the pusher element having one end communicating with gas pressure inside the tire and including means for selectively closing the orifice. The pusher element is mounted to the rim for movement between a first position wherein the means for selectively closing closes the orifice and a second position wherein the means for selectively closing opens the orifice. The pusher element has another end outside of the tire with a cam mounted thereto. A presser means mounted to be stationary relative to the rotation of the tire selectively engages the cam and moves the pusher element to the second position to control the opening of a valve to deflate the tire.

Claims

1. A device for deflating a rotating tire mounted on a rim and comprising:

a rim having an orifice formed therein;

a pusher element extending through said rim in a gas tight manner, said pusher element having one end communicating with gas pressure of a volume inside the tire and including means for selectively closing said orifice, said pusher element being mounted to the rim for movement between a first position wherein said means for selectively closing closes said orifice and a second position wherein said means for selectively closing opens said orifice, said pusher element having another end outside of the tire;

a cam mounted to said another end of the pusher element; and

presser means mounted stationarily relative to the rotation of the tire for selectively engaging said cam and moving said pusher element to said second position to selectively reduce the pressure in the tire.

2. The device of claim 1 wherein said cam comprises a resilient blade having ends resting on the rim, said blade comprising means for biasing said pusher element into said first position.