Cable descent device
CA 2067536 A1 · Owner: Savvaidis, Emmanouel · Inventors: Savvaidis, Emmanouel
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A cable descent device comprises a housing which may be closed around a vertically extending cable. In the closed position, a pair of complementary brake shoes are urged against the cable. Two outwardly extending arm assemblies each include a suspension lever on which the operator maybe suspended to cause the inner end of the lever to bear against its associated brake shoe to provide a braking bias on the cable. Each arm assembly includes a manual control member connected to the suspension lever whereby downward movement of the control member counteracts the weight of the operator to move the suspension lever up thereby releasing the brake shoe. In a preferred embodiment a spring urges, 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 April 29, 1992. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended April 29, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 29, 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.