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. 19, 2022
Filed:
Oct. 03, 2018
The Swatch Group Research and Development Ltd, Marin, CH;
Alexandre Haemmerli, Neuchatel, CH;
Francois Gueissaz, Cormondreche, CH;
Jean-Claude Martin, Montmollin, CH;
Lionel Paratte, Neuchatel, CH;
Yves Winkler, Schmitten, CH;
Gianni Di Domenico, Neuchatel, CH;
Pascal Winkler, St-Blaise, CH;
Jean-Luc Helfer, Le Landeron, CH;
Lionel Tombez, Bevaix, CH;
Baptiste Hinaux, Lausanne, CH;
Donald William Corson, Yverdon-les-Bains, CH;
Michel Willemin, Preles, CH;
The Swatch Group Research and Development Ltd, Marin, CH;
Abstract
A process for producing a metal alloy balance wheel by molding, the process including the following steps: a) making a mold in the negative shape of the balance wheel, b) getting hold of a metal alloy that has a thermal expansion coefficient of less than 25 ppm/° C. and is able to be in an at least partly amorphous state when it is heated to a temperature between its glass transition temperature and its crystallization temperature, c) putting the metal alloy into the mold, the metal alloy being heated to a temperature between its glass transition temperature and its crystallization temperature so as to be hot-molded and to form a balance wheel, d) cooling the metal alloy to obtain a balance wheel made of the metal alloy, e) releasing the balance wheel obtained in step d) from its mold.