Throttling bushing for shaft seal
CA 1186008 A · Owner: Conoco Inc. · Inventors: Sweeney, William T.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An improved throttling bushing for a seal is used in a machine which has a casing and a shaft journaled in the casing. The throttling bushing reduces the flow of cooling and flushing fluid by maintainig a closer tolerance at the throttling bushing by using a labyrinth mounted on the shaft or a sleeve attached to the shaft and, an elastic bushing attached to the casing and positioned around the labyrinth. The clearance between the elastic bushing of the labyrinth is dimentioned to provide noncontact clearance prior to assembly.
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 April 23, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 23, 2002.
- 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.