Limited slip differential hydraulic drive system
CA 2215037 C · Owner: Hart, Colin R. · Inventors: Hart, Colin R.; Clark, Brian C.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A hydraulic wheel drive system comprises a fluid source (12) at least two wheel drive motors (20, 20') a pump (14) connected, between the fluid source and the motors at least two flow restrictions (22,22') and at least two load reaction compensators (24 24'). Each motor drives at least one wheel (W W') at varying speeds responsive to varying fluid flow rates supplied from the source. Each flow restriction (22, 22') is positioned between the pump and at least one motor and varies the flow rate to at least one motor responsive to upstream pressure changes. Each compensator (24 24') is connected between the pump and at least one restriction and controls pressures, upstream from at least one …
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 29, 1996 and granted February 20, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 29, 2016.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 29, 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.