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:
Sep. 23, 1997
Filed:
Aug. 01, 1996
Applicant:
Inventors:
Assignee:
Balzers und Leybold Deutschland Holding AG, Hanau, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B25J / ;
U.S. Cl.
CPC ...
294 88 ; 294 97 ; 335276 ; 901 36 ;
Abstract
Several finger-like grippers (4) are held and guided in openings or holes (21) in the head part (6) of a housing (20) so they can pivot about axes which are in a common plane transverse to the longitudinal axis (L) of the housing (20). Permanent magnets (11, 12) fixed to the inner ends of the grippers (4) cooperate with an electromagnet (13) provided in the housing (20) above the magnets (11, 12), the magnetic field axis of the electromagnet coinciding with the longitudinal axis (L) of the housing (20). The electromagnet moves the inner ends of the grippers (11, 12) back and forth between two stops (16, 17) depending on the polarity of the electromagnet (13).