Retainer clamp membrane fastening system
CA 1264525 C · Owner: Hickman, John B. · Inventors: Hickman, John B.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A retainer clamp membrane fastening system is disclosed particularly adapted for retaining elastomeric membrane materials in position on a building roof. Various embodiments are described which nay be attached to an upwardly projecting wall around the roof or which may be mounted directly to the roof perimeter. Each of the retainer clamp assemblies includes a core member which is fastened to the roof or wall surface. The core member has a pair of outwardly projecting arm portions. The membrane material is placed over the sore member and a retainer clip is clipped over the membrane. The retainer clip includes leg sections having converging and diverging sections. The converging section …
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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 January 23, 1990. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 23, 2007.
- 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.