Seal assembly
CA 1134874 A · Owner: Dresser Industries, Inc. · Inventors: Carrens, Donald E.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract of the Disclosure A seal assembly for a downhole hydraulically operated oil well pump has a dovetail shaped groove around the exterior of the pump body and a seal element mounted therein. The seal element has an inner side resting against the groove bottom, one end of a full thickness filling that end of the groove and extending therefrom toward the opposite end having a recess portion around the outer perimeter thereof forming a lip about a mid-portion of the seal element which is deformed by fluid pressure acting toward that end of the seal to urge the lip outward into sealing contact with a pump housing which encloses the pump body.
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 November 2, 1982. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 2, 1999.
- 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.