Worm gear drive locking apparatus
CA 2218977 A1 · Owner: Siler, G. Daniel · Inventors: Siler, G. Daniel
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A worm gear is connected to a machine tool component and has teeth mating with teeth on a power driven worm rotatably supported by a housing enclosing the worm. A clamping shoe is supported for sliding movement within a slot in the housing and has a compound curved inner surface positioned to engage the teeth on the worm. A cam shaft is supported for rotation by the housing and extends laterally through a hole within the clamping shoe. A fluid cylinder is connected to rotate the cam shaft for moving the clamping shoe radially between a released position and a clamping position pressing the teeth on the worm against the teeth on the worm gear by slightly deflecting the worm to lock the head …
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 October 15, 1997. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 15, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 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.