Treadmill with dual reciprocating treads
CA 2178905 C · Owner: Gordon, Trace O. · Inventors: Piaget, Gary D.; Gordon, Trace O.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A treadmill device includes a frame (12) and two side by side treadmills (14) each having a continuous tread (34) and first and second ends. The first ends of the two treadmills are pivotally supported on a base portion of the frame by a roller shaft (32) which extends through the treadmill rollers. The second ends of the treadmills are independently supported by spring return hydraulic cylinders (38) which are connected between the treadmills and spaced support members of the frame. The continuous treads are driven by a motor (18) which is coupled to the roller shaft. The treadmills alternately pivot up and down as a user walks thereon.
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 December 13, 1994 and granted August 17, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 13, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 13, 2016.
- 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.