Draft gear for railroad car coupler system
CA 1269349 C · Owner: Carlstedt, Richard A. · Inventors: Carlstedt, Richard A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A draft gear to absorb and cushion impacting forces on a railroad car coupler system includes a spring package in an inner section of a housing of the gear The spring, package connects with a set of friction shoes carried in friction shoe seats formed in an outer friction bore section of the housing. The shoes in turn engage with a wedge which extends from the housing outer end. In each friction shoe seat is a grooved recess having an inner outer, and, connecting groove portion arranged in an H-like shape. In each grooved recess in turn is a metallic insert to provide a film of lubricant between the shoes and friction shoe seats respectively. During operation the impacting forces on the …
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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 May 22, 1990. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 22, 2007.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.