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:
Feb. 24, 1981
Filed:
Oct. 12, 1979
Eduard Camerik, Eindhoven, NL;
U.S. Philips Corporation, New York, NY (US);
Abstract
An optical focussing device for focussing a radiation beam emanating from a radiation source onto a record carrier (1), and more specifically for focussing a light beam onto a video disc or audio disc, comprises a frame (3) in which an objective (10) is movable axially in the direction of its optical axis (15) with the aid of a drive system (4-7, 16). In order to avoid damaging of the record carrier (1) at last one elastic bumper (37) is secured to the free end (11) of the objective (10), which bumper absorbs shocks and prevents marring of the record carrier in the event of contact between the objective and the record carrier.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile