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:
Feb. 10, 2026
Filed:
Mar. 19, 2025
Kanzaki Kokyukoki Mfg. Co., Ltd., Amagasaki, JP;
Shuji Nishimoto, Amagasaki, JP;
KANZAKI KOKYUKOKI MFG. CO., LTD., Amagasaki, JP;
Abstract
[Problem] To improve reliability of a park lock mechanism in a drum type transmission of an electric shift type with a simple constitution. [Solution] A drum type transmission includes a park lock mechanism having a park pawl engaged with or disengaged from a park concave-convex portion of a park gear relatively non-rotatably disposed on a transmission shaft, a park pawl operation member for engaging the park pawl with the park concave-convex portion when a drum member is in a park position and releasing the engagement when the drum member is out of the park position, and an assist cam for assisting a movement of the park pawl in a direction in which the park pawl is released from the park concave-convex portion when the drum member is rotated from the park position toward a transmission position or a neutral position. The assist cam is disposed at one end portion of an assist operation shaft that is rotated by power branched from a shift operation gear train.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile