Active vehicle suspension unit
CA 1257616 A · Owner: Schnittger, Jan R. · Inventors: Schnittger, Jan R.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A hydraulic shock absorber includes a generally vertical cylinder receiving therein hydraulic liquid a, piston working in the cylinder and partioning the interior thereof into two liquid chambers,an upper and a lower chamber. Two sets of one or more damping force generating check valves are mounted on the piston one, set generating the damping force in the expansion stroke and another set allowing free flow from the lower (2) to the upper (1) chamber in the compression stroke. A piston rod is secured to the piston extending through the end of the cylinder to the outside. Said sets of valves constitute connections between the two liquid chambers (1,2), a liquid reservoir (3) connected to the …
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
- Granted July 18, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 18, 2006.
- 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.