Fall-arrest apparatus
CA 2085600 C · Owner: Barrow Hepburn Sala Limited · Inventors: Riches, David; Feathers, Leonard John
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to safety apparatus comprising a safety track (1) which is secured in spaced relation to a building or other fixture by supports (5) located at intervals along the track. A component (7) to which the lanyard of a worker's safety harness can be attached is slidable along the safety track. The sliding component (7) comprises a tube (20) which is threaded onto the safety track (1) and has a longitudinal slot (22) which allows the tube to travel past the track supports (5). A link (21) for connection to the worker's lanyard is pivotally connected to the wall of the tube (20) at a position such that the exertion of a downward loading force on the link (21) causes the tube …
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 May 20, 1992 and granted December 16, 1997. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 20, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 20, 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.