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:
Mar. 10, 1987
Filed:
Apr. 04, 1985
Ghislanus M Aldenhoven, Eindhoven, NL;
U.S. Philips Corporation, New York, NY (US);
Abstract
A disc-record player comprises a pressure member for pressing a record disc (5) against a turntable (1) which carries a mandrel at the upper side, the mandrel being coaxial with the turntable and being engageable with the center hole of the record disc (5). The pressure member comprises spring means formed by turns (12a) of a toroidal coil compression spring (12) which is accommodated in a annular space (11) in the mandrel, which space is open at the circumference of the mandrel. The turns are clear of the mandrel at the side facing the turntable axis (1a). The spring turns (12a) are movable under spring force radially relative to the turntable axis (1a); they project from the circumference of the mandrel and press the disc against the turntable.