Hole saw guide clamp system
CA 2195154 C · Owner: Cooper, Michael S. · Inventors: Cooper, Michael S.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A system and method are provided for using a portable tool for assisting the making, of holes in installed pipes, e.g. as water pipes and the like to prepare for , interconnected, piping. Such system includes a hollow cylindrical hole-saw guide, having an axis, for, guiding the hole-saw while the hole-saw is making a hole in only the first side of the, hollow installed pipe. The tool is constructed and arranged to maintain userselected, relative positions between the hollow installed pipe and the hole-saw while the hole-saw is, making the hole in only the first side of the hollow installed pipe. A first fixed clamp-head, is provided for positioning the hollow cylindrical hole-saw guide …
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 January 15, 1997 and granted April 23, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 15, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 15, 2019.
- 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.