Arrangement of a pressure-measuring element

• US 4,619,137 A
• Filed: 05/24/1985
• Issued: 10/28/1986
• Est. Priority Date: 05/26/1984
• Status: Expired due to Fees

• Current Assignee: Dr Ing hc F Porsche AG (Volkswagen AG)
• Original Assignee: Dr. Ing. H.C.F. Porsche Ag
• Inventors: Bott, Helmuth
• Primary Examiner(s): WOODIEL, DONALD
• Application Number:
  US06/737,436
• Time in Patent Office: 522 Days
• Field of Search: 73/146.5, 73/146.3, 73/146.4, 73/146.2, 301/6 WB, 340/58
• US Class Current: 73/146.5
• CPC Class Codes: B60C 23/00318 on the wheels or the hubs
• CPC Class Codes: B60C 23/0427 Near field transmission with inductive or capacitive coupling means
• CPC Class Codes: B60C 23/043 using transformer type signal transducers, e.g. rotary transformers
• CPC Class Codes: B60C 23/0498 for rim attachments B60C23/0494, B60C23/0496 take precedence
• CPC Class Codes: B60C 23/16 Arrangement of air tanks mounted on vehicles

Abstract

An arrangement of a pressure-measuring element for an air pressure control system in a vehicle, in which the measuring element is acted upon by air pressure in the tire hollow space and cooperates with a pick-up fixed at the axle. The pressure-measuring element is coordinated to an air chamber provided on the side of the rim which is in communication with the tire hollow space by way of at least one air flow passage.

Claims

1. An arrangement of a pressure-measuring element for an air pressure control system on a vehicle wheel having a rim, in which the measuring element is acted upon by air pressure in the hollow space of the tire and cooperates with a fixedly arranged pick-up means, an air chamber means provided on the rim side which is in communication with the tire hollow space by way of at least one air through-flow opening means, the pressure-measuring element being arranged in a closure wall of the air chamber means, said closure wall extending at least approximately parallelly with respect to one of fixed wheel hub and wheel axis of rotation, the pick-up means being held in the fixed wheel hub disposed opposite the measuring element, and an annular space separating the pick-up means from the measuring element, said annular space being closed-off between the stationary hub and the closure wall by way of an inner sealing means at the wheel and by way of a cap means adapted to be mounted from the outside.