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. 13, 1987
Filed:
Jul. 08, 1985
Applicant:
Inventor:
Sava Jacobson, Van Nuys, CA (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11B / ; G11B / ;
U.S. Cl.
CPC ...
242 57 ; 242186 ; 360 742 ; 340679 ;
Abstract
An end of rewind detector in a telephone answering device utilizes at least one tape cassette having a spindle. A rotating member which is made of a conductive plastic material containing carbon particles to exhibit intermittant conductivity characteristics rotates with the spindle. An electrical feeler is mounted for physical contact with the plastic material to detect variations in electrical conductivity, with termination of conductivity variation indicating termination of rotation of the spindle.
Jacobson, Sava. (1987). End of rewind detector for a telephone answering device (U.S. Patent No. 4635868). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4635868
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile