Hopper car gate opener and method of operating a hopper car gate
CA 1237604 A · Owner: Peckham, George W. · Inventors: Peckham, George W.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A hopper car gate opener comprising an elongated member having opposed flanges defining a fixed track; a trolley element mounted on the track supported by and movable along a top surface of each flange; and a portion of the trolley element underlaying and spaced from a bottom surface of each flange. A torque producing unit is mounted on the trolley element and is operable to generate a twisting moment in a predetermined rotational direction to drive a pinion of the gate. A method of operating the discharge gates of a hopper car having a plurality of gates where the gates are under control of rack and pinion sets individual thereto; providing a flanged track disposed generally parallel to …
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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 June 7, 1988. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 7, 2005.
- 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.