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. 11, 2025
Filed:
Nov. 27, 2020
Nivarox-far S.a., Le Locle, CH;
Lionel Michelet, Fleurier, CH;
Christian Charbon, Chezard-St-Martin, CH;
Marco Verardo, Les Bois, CH;
Nivarox-FAR S.A., Le Locle, CH;
Abstract
A method for manufacturing a spiral spring may include: (a) providing a blank with an Nb—Ti core; (b) beta-quenching the blank; (c) deforming the blank in several sequences; (d) winding to form the spiral spring; (e) final heat treatment on the spiral spring. The blank in (a) may include a layer of X including Cu, Sn, Fe, Pt, Pd, Rh, Al, Au, Ni, Ag, Co and Cr or an alloy of one of these elements around the Nb—Ti core. The method may include heat treating to partially transform the layer of X into a layer of X, Ti intermetals around the Nb—Ti core, and may be carried out between (b) and (c) or between two sequences of (c). The method may include removing the part of the layer of X, which may be carried out between (b) and (c), between two sequences of (c) or between (c) and (d).