Top operated tank car lading valve also operable from the bottom
CA 1114355 A · Owner: Acf Industries, Incorporated · Inventors: Carlson, Edwin S.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
In a top operated tank car valve a mounting flange is welded to, an opening in the bottom of the tank. A valve seat is located inboard of and above the lower surface of, the mounting flange. A vertically extending cage is integrally attached to the mounting flange. A top operator extends to the top of the tank, and a stem is attached to the lower portion of the top operator. The stem extends into an opening in a valve closure plug. A non-round cavity is formed in the bottom of the stem. The closure plug includes a seat which engages the valve seat located within the mounting flange. The closure plug includes a circular guide ring which engages a portion of the vertically extending cage as …
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
- Granted December 15, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 15, 1998.
- 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.