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:
Dec. 27, 1988
Filed:
Jul. 21, 1987
Applicant:
Inventors:
Jack A Dennison, Waller, TX (US);
Richard S Simpson, Houston, TX (US);
Assignee:
Texaco Inc., White Plains, NY (US);
Primary Examiner:
Int. Cl.
CPC ...
G08B / ;
U.S. Cl.
CPC ...
340672 ;
Abstract
A magnet and two magnetic sensing means are spatially related to each other, with each magnetic sensor sensing the relative movement between the magnet and the magnetic sensor. The magnetic sensor provides a signal corresponding to the relative movement. Circuitry connected to both magnetic sensors provides an alarm in accordance with the signals from both magnetic sensors when the rotation of the crank arm is in one direction and does not provide an alarm when the rotation of the crank arm is in the opposite direction.