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:
Oct. 30, 2012
Filed:
Jun. 07, 2011
Takehiro Nishimura, Kobe, JP;
Yasufumi Okumura, Kobe, JP;
Takehiro Nishimura, Kobe, JP;
Yasufumi Okumura, Kobe, JP;
Kawasaki Jukogyo Kabushiki Kaisha, Kobe, JP;
Abstract
A railcar primary suspension is configured to couple an axle box to a truck frame by a coupling mechanism. The coupling mechanism includes: a radius arm including a tubular part which has openings at both sides thereof; a shaft inserted into the tubular part and provided with projecting portions formed at both side surfaces of the shaft; a pair of receiving seats including fitting grooves in which the respective projecting portions are fitted; cover members configured to support the respective projecting portions; and fastening members configured to fix the cover members to the respective receiving seats. A portion of each fitting groove and a portion of the corresponding projecting portion, the portions contacting each other, respectively have arc surfaces, and a portion of each projecting portion and a portion of the corresponding cover member, the portions contacting each other, respectively have flat surfaces.