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:
May. 17, 1977
Filed:
May. 28, 1976
Applicant:
Inventor:
Dominic Francis Pignataro, Shrewsbury, MA (US);
Assignee:
Walker Magnetics Group, Inc., Worcester, MA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B23P / ;
U.S. Cl.
CPC ...
29416 ; 29469 ; 295275 ; 295276 ; 279 / ; 335289 ;
Abstract
The magnetic chuck disclosed herein is of the interlocking finger type and substantial components thereof are fabricated by making parallel oblique cuts in conventional bar stock thereby to generate a succession of parallelogram-shaped pieces. A series of the parallelogram pieces are assembled with alternate pieces being reversed so that they overlap only over a common triangular area with adjacent parallelogram pieces being separated by interleaved triangular spacers. The projecting fingers provided by such an assembly may be then mated with other similar or half-similar pole-piece units to form an interlock magnetic chuck top plate.