Bellows type expansible chamber pump having separate biasing means
CA 1057578 A · Owner: Bender Machine Works · Inventors: Bender, Lloyd F.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A bellows type expansible chamber pump having an exterior spring encircling it for biasing the pump in a suction direction the pump being, completely and quickly disassembled for cleaning purposes. The pump is mounted within an enclosure or box and is driven through an adjustably eccentric by an electric motor. A pump end section sets freely in the bottom of the box and can be manually shifted to prime the pump.
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 July 3, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 3, 1996.
- 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.