Squeeze pump having improved rollers
CA 2242133 C · Owner: Daiichi Techno Co. Ltd. · Inventors: Iwata, Noboru
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A squeeze type pump that transfers slurry via an elastic tube by squeezing the elastic, tube with pairs of rollers to elastically deform the tube while moving each pair of, squeezing rollers. The squeeze type pump includes a cylindrical drum with the elastic tube, being arranged along the inner surface of the drum. A drive shaft is supported at a center, portion of the drum while pairs of support shafts are cantilevered by the drive shaft. Bearings rotatably support the rollers on each support shaft. The squeezing rollers are, formed from a synthetic resin material. The squeezing rollers include bores for receiving, the bearings, the bearings being shrink fitted into the receiving …
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
- Filed June 30, 1998 and granted September 9, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 30, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 30, 2020.
- 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.