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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.:

US 4868435 B1

PDFFull Text
Date of Patent:
Sep. 19, 1989

Filed:

May. 07, 1987

Single phase synchronous motor vibration apparatus

Applicant:
Inventors:

Gerhard Diefenbach, Aachen, DE;

Hugo Schemmann, Schaesberg, NL;

Romuald L Bukoschek, Klagenfurt, AT;

Assignee:

U.S. Philips Corp., New York, NY (US);

Attorney:

Bartlett; Ernestine C.

Primary Examiner:

Patrick R Salce

Assistant Examiner:

D L Rebsch

Int. Cl.
CPC ...
H02K / ; F16F / ;
U.S. Cl.
CPC ...
310 47 ; 30 4392 ; 74 54 ; 310 51 ; 310 80 ;
Abstract

An electrically driven vibrating apparatus such as a dry shaver comprises a single-phase synchronous motor having a drive shaft, together with a part to be reciprocated. A cam is rotated by the motor drive shaft, and a lever is journalled about a pivot and is in contact with the part to be reciprocated. A pressure roller is mounted on the lever and is in constant contact with the cam profile. A compression spring acts on the lever to urge the pressure roller towards the cam.

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Diefenbach, Gerhard. (1989). Single phase synchronous motor vibration apparatus (U.S. Patent No. 4868435). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4868435

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