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:
May. 25, 1976
Filed:
Sep. 13, 1974
Applicant:
Inventors:
William J Gervais, Van Nuys, CA (US);
Jerry Matula, Culver City, CA (US);
Assignee:
Pertec Corporation, El Segundo, CA (US);
Primary Examiner:
Int. Cl.
CPC ...
G11B / ; G11B / ;
U.S. Cl.
CPC ...
242182 ;
Abstract
A tape transport system having a capstan servomechanism for velocity control of tape across a read/write head and separate reel servomechanisms for tape supply and take-up control, and also having tape loops in vacuum columns, is provided with tape position feedback to each reel servomechanism to stabilize reel positions in a standby (zero capstan speed) condition from AC tachometers of the induction-generator type normally used during steady state (steady capstan speed) for velocity feedback.