Suction sweeping machine with suction attachment
CA 2240760 A1 · Owner: Riach, Alan Bryson · Inventors: Munnoch, Peter Alexander Clarence; Riach, Alan Bryson
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A suction sweeping machine has a high powered suction attachment including a vacuum pump 45 independent of a main source of suction on the machine a , canister 31, separate from a main rubbish collector and suction hoses 41 and 27,13 , extending between a suction head 17 and a canister 31 and the pump 45 and the canister 31, respectively, a manifold 50 preferably being provided by means of which power from a, main power source to the wheels 5 of the machine may be diverted to a hydraulic motor, 49 for the pump 45. The attachment also has a hand-held lance-like portion 21 which is, held by the operator, its remote end terminating in a soft rubber head 17 and , to which a, spring head 53 …
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 June 16, 1998. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended June 16, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 16, 2020.
- 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.