Adjustable height load bearing support structure
CA 2252939 A1 · Owner: Hon Technology Inc. · Inventors: Machael, Jay R.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A counterbalanced adjustable height load bearing support structure (20) comprises a spring biased arm (42) having a cam surface (44) thereon cooperates with a follower (46) of a vertically movable support assembly (26) supporting a load bearing surface (32). The cam surface (44) in preferred form is generally concave upwardly and has a profile defined by the expressions: Rx' = r cos.gamma. + (d-r) cos (.beta. + .theta.) Ry' = r sin.gamma. + (d-r) , sin (.beta. + .theta.) where Rx' and Ry' are a local coordinate system on the cam arm (42), r represents the distance between the cam surface (44) and the center of rotation of the cam arm, .gamma. is the angle of rotation of the r vector …
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 October 10, 1997. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 10, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 10, 2019.
- 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.