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:
Nov. 27, 1990
Filed:
Oct. 18, 1988
Microscience International Corporation, Sunnyvale, CA (US);
Abstract
A high performance linear actuator for a memory storage device includes a carriage having bearings at opposed sides thereof for engaging a pair of rail members. One of the pair of rail members is preloaded against the respective carriage bearings to provide structural stiffness and increased resonant frequency to the carriage assembly. Another set of bearings straddle a third rail member extending medially between the pair of rail members. An electromagnetic coil motor is secured to the carriage and disposed to engage an E-frame driving magnet, with the force vector of the coil extending parallel to the rail members and proximate to the center of gravity of the carriage assembly. A plurality of read/write heads is secured laterally adjacent to the electromagnetic assembly and extend toward the magnetic storage medium. The E-frame is closed at both ends to prevent flux leakage. An electronic latch under program control engages and immobilizes the carriage whenever the system is not operating.