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:
Jan. 25, 1977
Filed:
Feb. 25, 1975
Samuel A Morgan, Ann Arbor, MI (US);
Sycor, Inc., Ann Arbor, MI (US);
Abstract
A data recorder/reproducer device, particularly for utilizing flexible magnetic disc media, is adapted to carry a recording head along at least one side of the disc. Translational drive means including a lead screw or worm driven by a stepper motor has a follower mounted thereon to which the recording heads are connected, for movement across the face of the disc generally radially thereof. Position-retaining means are provided for the follower, biased between it and the lead screw with sufficiently high spring force to prevent overtravel of the follower and to maintain accurate positioning of the follower and the heads moved thereon, and having a spring rate which prevents decoupling of the position-retaining means during rapid starts and stops of the lead screw. As a result, during each time interval between segments of rotation of the worm, the stepper motor may be de-energized, thereby eliminating a primary source of unnecessary and undesired heat, and at the same time reducing power consumption, leading to improved reliability and generally superior performance.