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:
Aug. 23, 2022
Filed:
Dec. 01, 2017
Piaggio & C. S.p.a., Pontedera, IT;
Walter Mariotti, Pontedera, IT;
Luca Nuti, Pontedera, IT;
PIAGGIO & C. S.P.A., Pontedera, IT;
Abstract
A synchronous transmission () for a motorcycle comprises a primary shaft () of mechanical gearbox, and a pair of secondary shafts () equipped with one or more secondary gearwheels for transmitting the motion to a hub shaft (), wherein a desmodromic drum () actuates a pair of coupling forks () selectively defining the position of respective sliding couplings () between primary () and secondary shafts () to select all speeds of the transmission, the desmodromic drum () being in phase with a device () for actuating the gearwheels, and wherein the coupling forks () are equipped with a cam follower end () maneuvered by said desmodromic drum () having a cylindrical surface () whereon a single desmodromic track () is formed.