Hydraulic expansion swaging of tubes in tubesheet
CA 1107182 A · Owner: Westinghouse Electric Corporation · Inventors: Cooper, Frank W. Jr.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
9- 47,862, ABSTRACT OF THE DISCLOSURE The method of this invention involves abruptly applying a very high pressure pulse to the already pressurized annular space between a hydraulic expansion-swaging mandrel core and the tube being swaged to obtain a practically zero gap, after removal of the pressure, between the cube and the bore in which it is being swaged.
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 August 18, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 18, 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.