Female connection member for slackless drawbar assembly
CA 2134859 C · Owner: Daugherty, David W. Jr. · Inventors: Daugherty, David W. Jr.; Hawryszkow, Michael G.; Kanjo, Wajih
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A female connection member used in conjunction with a slackless type drawbar assembly which connects together adjacently disposed ends of a pair of railway cars in a substantially semi-permanent fashion. The female connection member including a first end portion having a, configuration to enable the first end portion of such female member to be engaged within an outer end portion of a center sill member disposed on a bottom portion of a car body member of a railway car. A radially opposed second end portion of the female member extends outwardly from such outer end portion of such center sill member. There is a cavity provided in such radially opposed second end portion of the female …
Read the whole patent
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
- Filed November 1, 1994 and granted September 18, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 1, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 1, 2016.
- 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.