Apparatus to prevent the overfilling of a storage bin with granular matter
CA 2029962 A1 · Owner: Boychuk, William · Inventors: Boychuk, William
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An apparatus to prevent the overfilling of a storage bin with granular matter consisting of a body and a clamp for securing the body adjacent to a top opening of a storage bin. An arm is provided having a first end and a second end. The first end is pivotally mounted to the body. A paddle is secured to the second end of the arm. A switch is secured to the body. The switch is activated by movement of the arm. The switch is adapted to be coupled with associated apparatus, such as an auger. Granular matter filling the bin exerts a force upon the arm causing the arm to pivot whereby the switch turns off the auger. A pivotal connected is provided int he body for adjusting the attitude of the arm …
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 14, 1990. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 14, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 14, 2012.
- 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.