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:
Oct. 10, 2023
Filed:
Feb. 03, 2021
Eta SA Manufacture Horlogère Suisse, Grenchen, CH;
Julien Christan, Bienne, CH;
Laurent Kaelin, Sonvilier, CH;
ETA SA MANUFACTURE HORLOGÈRE SUISSE, Grenchen, CH;
Abstract
A twisted arbour barrel (), including a barrel drum () provided with a housing, a spring arranged in the housing of the barrel drum (), an arbour () at least partially passing through the housing, the spring being compressed by rotation of the arbour in a first direction of rotation (), the arbour () being provided with a protruding end () of the drum (), a ratchet () arranged on the drum (), the ratchet () being configured to allow the rotation of the arbour () in the first direction of rotation (), the protruding end () passing through the ratchet () through an opening () cooperating by interlocking with the protruding end (), the protruding end () of the arbour () having a twisted shape around its axis.