Shock absorbing and impact absorbing device
CA 2134791 A1 · Owner: Lai, Wai K. · Inventors: Lai, Wai K.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Shock absorber for suspension on motor vehicles or bikes and impact absorber for bumper on motor vehicles to absorb impact in collision are provided to operate by mechanical means when the absorber hits a bump, or impact the energy drives the moveable parts of the absorber to cause an increase of air pressure and vacuum respectively in the two isolated adjacent compartments inside its hollow cylindrical body. The increase of air pressure and vacuum are both directly proportional to the bump or impact energized to the absorber. The increased air pressure and vacuum act as buffer material producing damping effect when it acts as a shock absorber and impact absorbing effect when it acts as an …
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 November 1, 1994. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 1, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 1, 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.