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. 01, 1991
Filed:
Dec. 09, 1988
Kent J Forbord, Roseville, MN (US);
Magnetic Peripherals Inc., Minneapolis, MN (US);
Abstract
A magnetic disc drive includes a rigid housing, a plurality of data storage discs rotatably mounted in the housing, and a carriage for supporting and placing transducing heads in selected dispositions with respect to the rotating discs. An actuator or voice coil motor drives the carriage, and is fixed in the vertical direction to the housing by three posts extended upwardly of a deck portion of the housing and engaging the bottom of the actuator. A metallic plate mounted integrally to the actuator and a viscoelastic polymeric layer are interposed between the actuator and the deck adjacent the posts. The posts are sufficiently flexible to permit a limited horizontal displacement of the actuator with respect to the housing, responsive to movement of the carriage. The displacement causes shear strain in the viscoelastic layer whereby the layer tends to absorb and dissipate most of the energy of vibration.