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:
Dec. 13, 1977
Filed:
Aug. 09, 1976
Irving Karsh, Los Angeles, CA (US);
Bell & Howell Company, Chicago, IL (US);
Abstract
A tape reel adapted for use with a tape recorder/reproducer having control means operable to inhibit destruction of information on the tape by recording over previous information, includes a flange defining a tape cavity of the reel and a retaining wall extending axially of the flange. A lockout ring having portions defining an L-shaped cross section is configured to be removably retained by the retaining wall in a first position and a second position. A plunger assembly associated with the recorder/reproducer detects the position of the lockout ring to inhibit the record/erase electronics when the ring is in the first position. A detent assembly maintains the plunger in spaced relationship with the lockout ring in both the first and second positions to reduce the noise associated with the recording and the reproducing of the tape.