logo

For the Inventor, By the Inventor

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.:

US 4471990 B1

PDFFull Text
Date of Patent:
Sep. 18, 1984

Filed:

Dec. 30, 1982

Railroad car wheel

Applicant:
Inventors:

Kenji Hirakawa, Osaka, JP;

Haruo Sakamoto, Hyogo, JP;

Shigeru Suzuki, Hyogo, JP;

Shigeo Sugawara, Nara, JP;

Assignee:

Sumitomo Metal Industries, Ltd., Osaka, JP;

Attorney:

Wenderoth, Lind & Ponack

Primary Examiner:

Howard Beltran

Int. Cl.
CPC ...
B60B / ; B60B / ; B60B / ;
U.S. Cl.
CPC ...
295 21 ; 295-1 ; 295 22 ; 295 27 ;
Abstract

A railroad car wheel is designed to have an amount of displacement of 40 mm or larger, this amount being the amount of displacement of a rim portion relative to a boss portion of the wheel which is the distance between two lines perpendicular to the axis of the wheel, one from the midpoint of the thickness of a plate portion adjacent to ends of curves of the rim fillets and the other from the midpoint of thickness of the plate portion adjacent to ends of curves of the boss fillets.

Find Patent Forward Citations

Hirakawa, Kenji. (1984). Railroad car wheel (U.S. Patent No. 4471990). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4471990

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

Loading…