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. 20, 2025
Filed:
Jan. 20, 2021
Applicant:
Hitachi Astemo, Ltd., Hitachinaka, JP;
Inventors:
Milton Muzvidziwa, Hitachinaka, JP;
Koichi Yamaka, Hitachinaka, JP;
Yohei Katayama, Hitachinaka, JP;
Assignee:
HITACHI ASTEMO, LTD., Ibaraki, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16F 9/34 (2006.01); F16F 9/19 (2006.01); F16F 9/32 (2006.01); F16F 9/46 (2006.01);
U.S. Cl.
CPC ...
F16F 9/3271 (2013.01); F16F 9/19 (2013.01); F16F 9/34 (2013.01); F16F 9/46 (2013.01); F16F 2222/12 (2013.01); F16F 2228/066 (2013.01); F16F 2232/08 (2013.01); F16F 2234/02 (2013.01);
Abstract
A piston bolt is formed by divided first and second members, and a first small-diameter portion and a large diameter portion of a common passage are formed in the first member and a second small-diameter portion of the common passage is formed in the second member. This configuration allows the common passage to be processed using a general-purpose method and tool and contributes to reducing the man-hours for the piston bolt.