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. 09, 1985
Filed:
Oct. 17, 1983
Applicant:
Inventors:
Robert M Rood, Woodbury, MN (US);
James J Wulfing, Afton, MN (US);
Assignee:
Minnesota Mining and Manufacturing Company, St. Paul, MN (US);
Primary Examiner:
Int. Cl.
CPC ...
G03B / ; G11B / ;
U.S. Cl.
CPC ...
242199 ; 220337 ;
Abstract
A videotape cassette has a visor-type door, at each end of which is an ear or corner part at which a pin hinges the door to a housing. As in the prior art, the door is biased to either a fully opened or fully closed position. In the novel cassette, the biasing results from a free-standing finger formed in a wall of the housing, which finger acts as a spring against a squarish platform on the inner face of an ear of the door.