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:
Feb. 01, 1983
Filed:
Sep. 29, 1980
Nippon Soken, Inc., Nishio, JP;
Abstract
An internal combustion engine rpm detection system, which detects the rpm of an automotive internal combustion engine, comprises a magnetic sensor section for forcibly magnetizing a valve rocker arm in the neighborhood of an oil inlet formed in a cylinder head cover of the internal combustion engine and for detecting the magnetic field changes in the valve rocker arm accompanying the motion thereof. A processing section supplies a drive signal to said magnetic sensor section and converts the output of said magnetic sensor section representing magnetic field changes accompanying the rocking motion of the valve rocker arm into a pulse signal. The magnetic sensor section and processing section are removably mounted as an integral unit in the oil inlet of the engine.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile