Split stud ring anchoring device
CA 2129401 C · Owner: Hart, James E. · Inventors: Mckay, Albert A.; Hart, James E.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A fastener assembly for installing valve devices and the like on one side of a mounting plate by bolts were the bolt holes are without threads and the opposite side of the mounting face is inaccessible for holding a bolt head or nut from turning. The fastener assembly includes at least one fastener plate and a minimum of two threaded bolts affixed thereto so, that the threaded portion of the bolts affixed thereto so that, the threaded portion of the bolts projects through bolt holes in the mounting plate. The at least one fastener plate may be a split ring. A retaining washer is threaded onto the projecting bolt threads to retain the fastener plate in place while the valve device is being …
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 August 3, 1994 and granted June 16, 1998. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 3, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 3, 2016.
- 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.