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:
Aug. 05, 1980
Filed:
Dec. 05, 1978
Frederic F Grant, Bellflower, CA (US);
Henry M Martija, La Verne, CA (US);
Bell & Howell Company, Chicago, IL (US);
Abstract
A metallic mass is placed into frictional engagement with a transducer head structure. Vibrations of such transducer head structure are dampened by relative displacement between the metallic mass and frictionally engaged transducer head structure. Plastic deformation of the metallic mass frictionally engaging the transducer head structure may also be employed to dampen vibrations. The metallic mass may be pressed into frictional engagement with the transducer head structure, and vibrations from the frictionally engaged transducer head structure may be transmitted through the metallic mass to the viscoelastic polymeric layer to set up shearing strains in that layer causing the mass to dampen vibrations of the transducer head structure by lagging oscillation in frictional engagement with that transducer head structure.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile