Attachment for an overhead door
CA 1114237 A · Owner: Olson, Bruce E. · Inventors: Olson, Bruce E.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An attachment for use with an overhead door having limited head room. The door is made of hingedly connected sections and movable between a closed and an open position on a track. The attachment comprises a first member adapted to be attached to the top section of the door. A second member is pivotally connected to the first member. Track engagement means, for example a roller are attached to the, second member and abutment means are each position on the second member to abut a stop position on the exterior of the track when the door is in the closed position. Abutment of the abutment means on the stop acts to stop movement of the second member in the track at a point just prior to the door …
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 December 15, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 15, 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.