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. 15, 1991
Filed:
Nov. 03, 1989
Applicant:
Inventor:
Paul Mitchell, Glenview, IL (US);
Assignee:
ENM Company, Chicago, IL (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G04F / ;
U.S. Cl.
CPC ...
368-5 ; 368-8 ; 377 16 ;
Abstract
An engine operating time measuring apparatus is provided for use with an engine having an internal magneto-type electrical generator providing an ignition voltage. The engine operating time measuring apparatus includes power supply circuitry coupled to the electrical generator of the monitored engine for supplying operating power to the apparatus in response to generated ignition voltage. Timing circuitry is responsive to the operating power supplying circuitry for generating a clock signal. A counter is responsive to the clock signal for counting the generated clock signal to identify the engine operating time.