Bladder actuated pumping system
CA 1086567 A · Owner: Sealed Air Corporation · Inventors: Sperry, Charles R.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention provides a pump comprising a tubular casing fluid inlet means at one end of said casing fluid outlet means at the, other end of said casing a tubular support member positioned in said casing in substantial axial alignment therewith an elastic pumping member, disposed about the outer surface of said tubular support member pump means, for expanding and contracting said elastic pumping member so that it alternately expands and seals against the inner surface of said tubular casing and contracts back to said tubular support member and a fluid flow path, through said tubular support member which connects said inlet means to said outlet means, said fluid flow path being …
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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 30, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 30, 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.