The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 18, 1977
Filed:
Aug. 01, 1975
Applicant:
Inventors:
Harold A Haven, Hale, MI (US);
John A Stewart, Flint, MI (US);
Assignee:
General Motors Corporation, Detroit, MI (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B60C / ;
U.S. Cl.
CPC ...
340 58 ; 200 6125 ; 200 / ; 335205 ;
Abstract
A vehicle pneumatic tire low pressure warning system including a low pressure air switch carried on the vehicle rotating wheel assembly which compares a reference pressure and the tire pressure and couples the tire air to an actuator on the rotating wheel assembly when the difference exceeds a specified amount. The tire air operates the actuator to position a magnet to actuate a reed switch sensor on a stationary member of the vehicle. A signal is provided in response to the reed switch actuation to warn the vehicle operator of the low tire pressure.