Exercise device
CA 2182550 C · Owner: Brister, Timothy G. · Inventors: Brister, Timothy G.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A lightweight exercise device offers variable resistance including assisted resistance, for strengthening and conditioning various parts of the body. The device may be strapped to the user's back and is provided with rollers for contact with a wall door, pad, or floor. The rollers are mounted on rotatable axles on the rear face of the device and operate in conjunction with a tensioning system which uses durable elastic cords or bands. As the rollers are rotated in one direction the cords or bands wind about the axles thereby progressively increasing the cord or band tension. This increased tension thereby increases the resistance to rotation of the axles and the rollers mounted thereon. As …
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 1, 1996 and granted October 19, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 1, 2016.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 1, 2018.
- 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.