Flushing and cooling system for pumps
CA 1084776 A · Owner: Dresser Industries, Inc. · Inventors: Shepherd, Wilburn O.; Gaslow, Jonathon C.
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 improved flushing and cooling system for shaft seals that are located in cavities in the pump housing includes inlet and discharge ports extending through the housing into the seal cavities and a pumping ring seal that is arranged to circulate the fluid through the inlet port past the seal and outwardly from the outlet port into the housing of the pump. Both ends of the housing can be provided with such a system and the systems interconnected internally of the housing to balance the pressure therebetween. .1a.
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 September 2, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 2, 1997.
- 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.