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. 07, 1978
Filed:
Oct. 12, 1976
Applicant:
Inventor:
Friedrich Perrot, Lengnau, CH;
Assignee:
Eta A.G. Ebauches-Fabrik, , CH;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G04B / ; G04B / ; G04B / ;
U.S. Cl.
CPC ...
5814 / ; 58 87 ;
Abstract
An improved extractable barrel-arbor for a watch movement is provided with first and second end cylindrical pivot bearing surfaces, and a central cylindrical surface containing a hook. The radius of the central surface is less than the radius of the first and second end cylindrical surfaces while the distance between the axis of the barrel-arbor and the outer hooking edge of the hook is equal to the radius of at least one of the first and second pivot bearing surfaces.