Drill jig for preparing a door to receive a cylindrical lock
CA 2059518 A1 · Owner: Shumaker, Mark A. · Inventors: Shumaker, Mark A.; Whitmoyer, David A.; Palmer, Ralph P.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract of the Disclosure, A door preparation drill jig is usable to prepare a door to receive a lockset provided with through-bolt mounting studs in a main bore provided in the door. The drill jig has a planar body drill guides, and a cylindrical body. The front surface of the planar body has a portion for the placement of installation instructions and the attachment of a C-clamp. Each drill guide is arranged to receive a drill bit used to drill one of the mounting holes for receiving a mounting stud of the lockset. The cylindrical body has a chamfered edged latch slot which receives a portion of the latch extending into the main bore of the door. Additional tabs appended to the …
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 16, 1992. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended January 16, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 16, 2014.
- 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.