Inflatable packer
CA 2091252 A1 · Owner: Gates Rubber Company (The) · Inventors: Lee, Albert H. Jr.; Sabo, Carl H.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An inflatable packer (16) includes an elastomeric tubular body (22) and an outer cover (24) surrounding the body (22). An end member (30) is also provided having a capped portion (32) threadably engageable with an annular ring member (34) the ring member (34), being secured to the end portion (36) of the outer cover (24). A plurality of reinforcing elements (28) are sandwiched between the cover (24) and the body (22) and have end portions (54) terminating beneath the ring member. Finally there is a mechanism (60) , for wedging the end portion (54) of the reinforcing elements (28) against the inner surface (66) of the ring member (34) in response to increased threaded engagement between the …
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 August 19, 1992. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended August 19, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 19, 2014.
- 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.