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Expired Canadian patentCanada

Secondary suspension system for a railway car

CA 1165181 A · Owner: Budd Company (The) · Inventors: Germer, John A.

CIPO record

Overview

Drawings and full text

Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

A secondary suspension system includes a pair of air springs connected between the bolster of a truck and the car body. The air springs are disposed at opposite angles inclined inwardly from opposite ends of the bolster towards the center of the car body to provide both vertical and lateral suspension for the car body.

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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.

Why it's free to use

  • Granted April 10, 1984. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 10, 2001.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledDecember 24, 1981
GrantedApril 10, 1984
Term endedApril 10, 2001
Patent numberCA 1165181 A
Classification (IPC)B61F3/04 +2 more

Timeline

Timeline From CIPO dates

1982198419861988199019921994199619982000Application filedDec 24, 1981Patent grantedApril 10, 1984Term endedApril 10, 2001

Sources & verification

Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.