Soil compacting vibrator
CA 2081783 A1 · Owner: Ess Verk Ab · Inventors: Andreasson, Lars; Andreasson, Lars
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention concerns a soil compacting vibrator having an upper portion (1), a lower portion (13) and a vibratory unit (8) driven by a hydraulic motor as well as vibration attenuators (10) located between the upper portion (1) of the vibrator and its lower portion (13). The vibration attenuators (10) are mounted essentialy diagonally with regard to the bottom plate (11) of the soil compacting vibrator and are at each end of the bottom plate (11) connected on the one hand to end legs (2) which are fastened to the upper portion (1) of the vibrator, and on the other hand to end plates (9) which are fastened to the lower portion (13) of the vibrator. The end legs (2) and end plates (9) are …
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 April 18, 1991. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended April 18, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 18, 2013.
- 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.