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. 19, 2002
Filed:
Feb. 26, 1999
Detlef Mattinger, Bickenbach, DE;
Wella Aktiengesellschaft, Darmstadt, DE;
Abstract
The scissors for cutting filamentary material, especially hair, include two shanks ( ) pivotally connected to each other at a pivot joint ( ); respective blades ( ) for cutting the filamentary material extending from the shanks ( ) and an electrically powered vibrator ( ) for vibrating one of the shanks in a longitudinal direction at an ultrasonic frequency and with a displacement of about 100 to 200 &mgr;m. The pivot joint ( ) includes a nail ( ) extending from one shank, an eccentric washer ( ) embedded in the other shank which engages around the nail and a miniature motor ( ) for rotating the washer ( ) and the shank in which it is embedded. In other embodiments the electrically powered vibrator ( ) include a piezoelectric transducer ( ) arranged to connect a shank to one of the blades or an exciter coil ( ) wrapped around a strut region made of a magnetostrictive material in one shank.