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:
May. 16, 2023
Filed:
Aug. 17, 2021
Hitachi Energy Switzerland Ag, Baden, CH;
Jakub Korbel, Baden, CH;
Matt Cuppett, Uniontown, PA (US);
Brian Christopher, Smithfield, PA (US);
Richard Thomas, Borlänge, SE;
Sami Kotilainen, Niederrohrdorf, CH;
Staffan Jacobsson, Grangärde, SE;
Benny Wedin, Grängesberg, SE;
Francesco Agostini, Zürich, CH;
Hitachi Energy Switzerland AG, Baden, CH;
Abstract
Provided is a spring drive cam for a spring drive of a circuit breaker including a disc-like shape configured for rotating around a rotation axis in the spring drive, whereby the disc-like shape comprises a radius (R) that changes depending on an angle (α) of the radius (R) relative to a base angle (α), and whereby a rate (dR/dα) defined by a change of the radius (R) per change of the angle (α) is ≤0.3 mm/°.