Opening and closing means for hinged trough covers on hopper cars
CA 1062962 A · Owner: Pullman Incorporated · Inventors: Adler, Franklin P.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An elongated hatch opening in the roof of a hopper car includes a pair of hatch covers hinged on opposite sides of the hatch. An operating mechanism including actuating means supported at the end of the hatch reciprocates a pair of push-pull bars positioned within the hatch opening which in turn are connected to elevating rods connected to the underneath sides of the covers the, elevating rods extending inwardly and upwardly in the closed position and have a universal joint connection with the covers. Upon movement of the push pull bars e elevating rods move the hatch covers to an upright open position. The elevating rods and the push pull bars way be located internally or externally of 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 September 25, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 25, 1996.
- 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.