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:
Dec. 25, 1990
Filed:
Dec. 12, 1988
Leo Bertram, Stolberg, DE;
Hugo Schemmann, Schaesberg, NL;
U.S. Philips Corp., New York, NY (US);
Abstract
The invention relates to a rotary shaving head (2) for an electric shaving apparatus, the shaving head comprising a rotary cutter (23) which is driven by an electric motor (3) and which comprises a cutter disc (54) whose periphery is provided with an annular configuration of cutter blades (52) which are offset from the plane of the disc and whose cutting edges (59) co-operate along a cutting plane with a shear plate (24) formed with hair entry apertures (57). The rotary cutting (23) and the shear plate (24) are constructed for rotation of the rotary cutter (23) in both directions of rotation and the rotary cutter (23) is adapted to be driven by a single-phase synchronous motor (3, 3') having a permanent-magnet rotor (9, 65).