Injection assembly
CA 1096850 A · Owner: Uni-Flex Rig Co. Ltd. · Inventors: Gray, Benjamin C.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
15-, "INJECTION ASSEMBLY", ABSTRACT OF THE DISCLOSURE A split-type injector for flexible drill tubing includes a pressure cylinder connected to linkage which maintains an adjustable pressure of the injection dies upon the tubing passing therethrough. The individual dies on the endless chain are constructed to grip components and tubing of different diameters which passes therethrough and also by means of a relief valve in the pressure system to widen and, close up as different diameter components or tubing pass therethrough. For example if a component such as a coupling is encountered, the halves of the injector move apart to allow it to pass yet at the same time maintain a similar contact …
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 March 3, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 3, 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.