Interfacial separator for concrete structures
CA 1284727 C · Owner: Quaker Plastic Corporation · Inventors: Dahowski, Donald E.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An improved system is provided for separation of contiguous concrete portions of a structure. This separation is advantageous in reducing structural failure caused by earth settlement, frost upheaval or excessive underground water pressure by allowing each section of an in-ground concrete structure affected to freely float independent of each other thereby eliminating the, effects of stress on the structure. The system has particular utility in forming a deck surrounding a swimming pool and may be used in conjunction with a form which is temporarily secured near the top on the vertical pool wall to receive the concrete forming the pool. The separator system is used at the interface at the …
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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 June 11, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 11, 2008.
- 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.