Pressure sensor for determining tire pressure

• US 5,090,237 A
• Filed: 10/26/1990
• Issued: 02/25/1992
• Est. Priority Date: 05/07/1988
• Status: Expired due to Fees

• Current Assignee: Robert Bosch GmbH
• Original Assignee: Robert Bosch GmbH
• Inventors: Haas, Lothar, Hettich, Gerhard, Schrumpf, Hans
• Primary Examiner(s): WOODIEL, DONALD
• Application Number:
  US07/601,742
• Time in Patent Office: 487 Days
• Field of Search: 73/146, 73/146.5, 73/146.3, 73/146.2, 73/146.4, 73/756, 73/431, 340/442, 340/443, 340/444, 340/445, 340/446, 340/447, 340/448, 116/34 R
• US Class Current: 73/146.5
• CPC Class Codes: B60C 23/04 mounted on the wheel or tyre
• CPC Class Codes: B60C 23/0498 for rim attachments B60C23/0494, B60C23/0496 take precedence
• CPC Class Codes: F16B 21/16 with grooves or notches in the pin or shaft

Abstract

A pressure sensor for determining air pressure in an interior of a motor vehicle tire has a housing for extending into a recess formed in a rim wall of the tire, and an annular flange located on the housing and supporting a spring against a side of the rim wall which spring provides for clamping an outer flange portion of the pressure sensor housing against another side of the rim wall.

Claims

1. A pressure sensor for determining air pressure in an interior of a motor vehicle tubeless tire having a rim wall and a recess forming an opening in the rim wall, said pressure sensor comprising a housing for extending into the rim wall recess, and having an outer flange portion for engaging a first side of the rim wall;

annular flange means located on said housing in a spaced relationship relative to said rim wall and spring means supportable by said annular flange means against a second side of the rim wall for clamping said outer flange portion against the first side of the rim wall.

2. A pressure sensor as set for in claim 1, further comprising a sealing O-ring, said outer flange portion having a circumferentially extending annular groove for receiving said sealing O-ring.

3. A pressure sensor as set forth in claim 1, wherein the first side of the rim wall has a conical surface and said outer flange portion has a corresponding conical shape for engaging the conical surface of the first side of the rim wall.

4. A pressure sensor as set forth in claim 1, said annular flange means comprises two corresponding annular disc halves, said housing having an annular groove for receiving said two annular disc halves.

5. A pressure sensor as set forth in claim 1, wherein said spring means comprises a plate spring.

6. A pressure sensor as set forth in claim 5, wherein said annular disc halves have one of projections and recesses, and said plate spring has another of projections and recesses engageable with said one of projections and recesses.

7. A pressure sensor as set forth in claim 5, wherein said plate spring has circumferentially extending bead engageable with said annular flange means.