Jar mechanism accelerator
CA 1295320 C · Owner: Anderson, Edwin Anderson · Inventors: Anderson, Edwin Anderson; Webb, Derrel Dee
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract of the Disclosure An energy accumulator for use with a well pipe string having a portion stuck in a well bore to enhance the jarring impact delivered to the well pipe string stuck portion by a up and/or down jar mechanism includes inner and outer telescopically connected members relatively movable longitudinally to accumulate energy in a mechanical spring arrangement, gas or compressible liquid in the accumulator. Cooperating surfaces on the inner and outer members assure that the jarring impact of the jar mechanism members is delivered to the well pipe string stuck portion independently of the tensile or compressive load applied to the jar mechanism and independently of the load …
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 February 4, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 4, 2009.
- 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.