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. 07, 1991
Filed:
Dec. 27, 1989
Applicant:
Inventor:
Silvio Marazzi, Cavigliano, CH;
Assignee:
Diamond S.A., Losone, CH;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02B / ;
U.S. Cl.
CPC ...
350 962 ; 350 9621 ;
Abstract
The core (4), of plastically deformable material, is supported and fastened in the hollow cylindrical outer part (2), of relatively hard material, on a supporting shoulder (6). Moreover, especially good results can be aimed for if the core (4) is slightly mushroom shaped and exhibits a disc (7) with a shank (8). The disc (7) can accommodate temperature determined dilatations especially well.