Lobe rotor pumps
CA 1237601 A · Owner: Alfa Laval Kolding A/S · Inventors: Ellis, George W.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A lobe rotor pump including a casing and two lobe rotors the rotors each having, coaxial with its axis of rotation, an axially extending cylindrical sleeve formed integrally therewith. A seal is merited in a fluid tight manner within the casing and seals against the outer cylindrical surface of the sleeve. A blind bore which is closed at the rotor end, has there within a drive shaft and retaining means are provided to hold the sleeve and the rotor on the drive shaft with the drive connection engaged said retaining means being located on the side or the seal remote from the rotor.
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 June 7, 1988. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 7, 2005.
- 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.