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:
May. 03, 1977
Filed:
Apr. 14, 1976
Applicant:
Inventor:
Peter J Carlson, Fort Lauderdale, FL (US);
Assignee:
Airpax Electronics Incorporated, Fort Lauderdale, FL (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G08B / ;
U.S. Cl.
CPC ...
3402 / ; 340 60 ; 340240 ; 3402 / ; 340270 ; 3072 / ; 307359 ; 328138 ; 307273 ; 328129 ; 328 48 ; 328-1 ;
Abstract
Disclosed is a circuit for producing an alarm or shut down signal when the ratio of engine speed to engine oil pressure of a tractor engine becomes excessive. A frequency signal from a speed transducer is applied to a digital counter having a counting cycle varied in accordance with a voltage signal from a pressure transducer. The voltage signal is converted to current and used to determine the period of a one shot multivibrator.