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:
Sep. 09, 1980
Filed:
Jun. 13, 1978
Applicant:
Inventor:
Akihiro Fushimi, Saitama, JP;
Assignee:
Pioneer Electronic Corporation, Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
G01D / ;
U.S. Cl.
CPC ...
2502 / ; 2502 / ;
Abstract
The effect of light reflected from the inner walls of the slits in a light chopping disc is substantially eliminated by tapering the slits so that the aperture facing the light source is larger than that facing the light detector. A gear drive is also provided for increasing the number of pulses generated during each revolution of the tuning knob.
Fushimi, Akihiro. (1980). Light chopping disc for a pulse generator (U.S. Patent No. 4221963). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4221963
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile