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. 30, 2023
Filed:
Sep. 25, 2018
Applicant:
Hitachi Automotive Systems, Ltd., Ibaraki, JP;
Inventors:
Mitsunobu Kashina, Ayase, JP;
Yoshimi Tsuburaya, Yokohama, JP;
Assignee:
HITACHI AUTOMOTIVE SYSTEMS, LTD., Hitachinaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16F 9/54 (2006.01); B21D 19/12 (2006.01); B23K 11/00 (2006.01); F16F 9/36 (2006.01); H01F 13/00 (2006.01);
U.S. Cl.
CPC ...
F16F 9/54 (2013.01); B21D 19/12 (2013.01); B23K 11/002 (2013.01); F16F 9/368 (2013.01); H01F 13/00 (2013.01); F16F 2226/02 (2013.01); F16F 2226/048 (2013.01);
Abstract
A manufacturing method for a cylinder device which includes a cylinder, a piston, a piston rod, a seal member, and an installing member, the method includes: a welding step for fixing the installing member to the cylinder through electrical resistance welding; a demagnetizing step for demagnetizing at least an opening portion of the cylinder; and an assembling step for assembling the piston, the piston rod, and the seal member in the cylinder through the opening portion.