Soil compactor
CA 2115115 A1 · Owner: Robbie, Malcolm G. · Inventors: Robbie, Malcolm G.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A soil compactor capable of assuming a narrower profile comprises a support member defining a compacting surface a shaft supported by the support, member and a fluid-powered rotary actuator coupled to the shaft. The shaft defines at least two passageways communicating with an exterior of the shaft through which the rotary actuator receives and exhausts pressurized fluid. In one form, the rotary actuator includes an eccentric housing and two gears which are rotated relative to one another by hydraulic fluid supplied through the shaft. The rotary actuator defines a center of gravity spaced from the central axis of the shaft so as to act as an eccentric when pressurized fluid is supplied and …
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 February 7, 1994. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended February 7, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 7, 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.