Packing assembly for use in a plunger bore
CA 1325025 C · Owner: Dowell Schlumberger Incorporated · Inventors: Cameron, Donald C.; Cobb, Homer V.; Winn, Fred M.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A packing assembly is for plunger-type pumps is installed around a movable plunger to prevent fluid from leaking past the plunger. The packing assembly includes male and female adaptor rings which are in, face-to-face contact with the packing rings but pro-, vide only a "sloppy" fit. The practice of this invention involves shaping the adaptor ring faces to conform precisely to the shape of the packing ring faces against which they are seated. -13-
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 7, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 7, 2010.
- 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.