Gear mechanism
CA 1322113 C · Owner: Gillies, Neil · Inventors: Gillies, Neil; Fahy, Arthur J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A torque limiting mechanism has two locking members designed to be incapable of transmitting drive between them but having meshing spiral teeth. The members are in a rotatable frame and are respectively driven by radially toothed gears having an idler gear between them. One radially toothed gear is splined to a section of a drive shaft of reduced diameter so that it twists in torsion when an input driving torque is applied to the shaft. Gear lash exists between the radially toothed gears which is overcome by the twist of the shaft if the applied torque is big enough. When this occurs, synchronous drive from the input shaft is applied to both locking members so that they rotate together. The …
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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 September 14, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 14, 2010.
- 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.