Power transmission system
CA 1239038 A · Owner: Maxaxam Corporation · Inventors: Brackett, George E.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A worm drive system has first and second sets of rollers, each having a roller axis and being mounted on a worm wheel for rotation about its roller axis relative to the worm wheel, the roller axes of the first and second sets being disposed in different orientations relative to the worm wheel axis of rotation. A worm screw has first and second screw threads in mating engagement with the first and second sets of rollers, respectively the first, and second screw threads being separate and distinct from one another and having different configurations. The first and second screw threads have surfaces matching surfaces generated by the rollers of the first and second sets, respectively, upon …
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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 July 12, 1988. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 12, 2005.
- 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.