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:
Feb. 12, 1980
Filed:
Aug. 14, 1978
Applicant:
Inventors:
Roger Mosciatti, Coram, NY (US);
Thomas P Foley, Lloyd Harbor, NY (US);
Frederick G Moritz, Hauppauge, NY (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11B / ; G11B / ;
U.S. Cl.
CPC ...
242182 ;
Abstract
The vacuum for controlling tape loop tension in a magnetic tape handler is supplied by a low speed multiple stage vacuum blower and controlled by a low power solenoid and a flapper valve operated between two predetermined positions. In order to provide fast operation of the flapper valve in response to the low power solenoid a fast acting fluid amplifier is utilized between the solenoid and the flapper valve. The elimination of belts, gears and high speed blowers results in an unusually quiet system.