Principal supporting structure for a portable machine used, when fully equipped, in taking earth core samples during earth or soil testing operations
CA 1105446 A · Owner: Hart, Ronald D. · Inventors: Hart, Ronald D.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A principal supporting structure for a portable machine used when, fully equipped, in taking earth core samples during earth or soil testing operations, in one embodiment, is essentially an upstanding hydraulic cylinder sub-assembly, comprising, a hydraulic cylinder serving as the principal vertical stationary body of this portable machine a piston rod serving as the, principal vertical extendable body of this portable machine an elongated guide, member secured to the exterior of the hydraulic cylinder a sleeve slidable up, and down the hydraulic cylinder while following the elongated guide member force transmitting tie rods secured between the extendable end of the piston rod and 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 21, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 21, 1998.
- 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.