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.:

US 9535404 B1

PDF
Full Text
Expired
Date of Patent:
Jan. 03, 2017

Filed:

Dec. 04, 2012
Applicant:

Cartier Creation Studio S.a., Genève, CH;

Inventors:

Kewin Bas, Villers-le-Lac, FR;

Cyrille Chatel, La Chenalotte, FR;

Assignee:

CARTIER INTERNATIONAL AG, Steinhausen, CH;

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G04B 17/20 (2006.01); G04B 18/00 (2006.01); G04B 9/00 (2006.01); G04B 37/02 (2006.01); G04B 1/22 (2006.01);
U.S. Cl.
CPC ...
G04B 37/02 (2013.01); G04B 1/22 (2013.01); G04B 1/225 (2013.01); G04B 17/20 (2013.01);
Abstract

A method for adapting a timepiece movement includes measuring a loss of energy for each free oscillation of the balance at atmospheric pressure; measuring the loss of energy for each free oscillation at a given low pressure corresponding to a working pressure intended for a modified movement; using i) the measured loss of energy at atmospheric pressure and ii) the measured loss of energy at the given low pressure, determining a percentage of energy gain of the balance between respective i) measurements of the measured loss of energy at atmospheric pressure and ii) measurements of the measured loss of energy at the given low pressure; and reducing a torque delivered to the escapement by a value corresponding to the determined percentage of energy gain.


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