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:
Nov. 08, 1983
Filed:
Nov. 16, 1981
Kiyotaka Otsuka, Hikone, JP;
Masao Tanahashi, Hikone, JP;
Matsushita Electric Works, Ltd., Osaka, JP;
Abstract
A rotary type electric shaver, having an inner cutter and a shaving head mounted thereover; the inner cutter including a rotatable base having receiving slits radially about its axis of rotation; the inner cutter also including a cutter blade inserted in each receiving slit, each cutter blade having a cutting edge and a leg portion, the leg portion terminating in a distal edge having at least one receiving notch and a receiving hole, the receiving hole being located closer to the axis of rotation of rotatable base than that receiving notch; the inner cutter also including a spring assembly for each receiving slit, each spring assembly having at least two spring portions, one end of each spring portion being fixed to the lower surface of the rotatable base, the other end of one of the spring portions engaging the receiving hole and exerting a downward force thereon, the end of the other spring portion engaging the receiving notch and exerting an upward force thereon; the shaving head including a thin, perforated comb; the cutting edge of each cutter blade bearing against the lower surface of the comb; the net upward force on the receiving notch being such that a uniform contact pressure between the cutting edge of each cutter blade against the lower surface of the comb is maintained along the entire cutting edge during operation of the shaver.