Auxiliary coupler pressure relief hydraulic system
CA 1279554 C · Owner: Shelbourn, William C. · Inventors: Haeder, Thomas Q.; Shelbourn, William C.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An auxiliary coupler pressure relief hydraulic system (110) for off-road vehicles including a battery (130), an engine (114), an engine ignition system (134) a reservoir (116) of hydraulic fluid, and a pump (112) for providing hydraulic fluid under pressure. Quick couplers (128) couple hydraulic fluid to an attachment (126) mounted to the vehicle. An electro-hydraulic spool valve (118) is connected to a source (148) of pilot pressure and controls the flow of hydraulic fluid to the quick couplers (128) in response to valve actuating signals. Forward and reverse auxiliary control switches (144, 146) are coupled to the spool valve (118) and provide valve actuating signals resulting in fluid …
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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
- Granted January 29, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 29, 2008.
- 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.