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:
Apr. 20, 1976
Filed:
Feb. 24, 1975
Timex Corporation, Waterbury, CT (US);
Abstract
The two conductor hairspring-hub arrangement comprises a metallic and substantially conventional hairspring which is fastened to a unitary hub, i.e. a metallic washer-like hub, to form a core or inner conductor. This inner conductor is sheathed with an insulating mantle or layer which is, in turn, coated with an electrical conductive mantle, i.e. an outer conductor insulated from the inner conductor. The insulating and conductive mantles have openings so that separate electrical connection can be made to the inner and outer conductors at each end of the hairspring-hub arrangement. In this manner, a two conductor hairspring-hub arrangement is provided which in an electric watch is capable of coupling drive pulses to a balance wheel drive coil.