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:
Jul. 24, 1979
Filed:
Aug. 02, 1978
William P Doby, Raleigh, NC (US);
Westinghouse Electric Corp., Pittsburgh, PA (US);
Abstract
A load survey tape recorder has a tape transport assembly including a supply spindle assembly having a magnetic brake and a take-up spindle assembly having a magnetic clutch. Substantially constant tensions are maintained in a recording tape as it is driven between supply and take-up reels by the magnetic retarding forces of the magnetic brake and by a variable magnetic drive coupling of the magnetic clutch. A non-magnetic spacer is placed in one or both of the magnetic coupling gaps of the brake and clutch for improved operation.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile