Drum winches
CA 1101401 A · Owner: Reynolds, Darcie F. · Inventors: Reynolds, Darcie F.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A drum winch for a yacht has a drum rotatably mounted on a supporting shaft structure through roller clutch means to permit rotation of the drum in one rotary direction only and seal means are provided for sealing the roller clutch means from the exterior of the winch, the seal means preferably being of a stretched O-ring arrangement mounted over an annular ramp-like surface having a radially inwardly directed component. The roller clutch means is dimensioned relative to the exterior diameter of the shaft structure and/or relative to the internal diameter of a central bore in the drum so that a yieldable interference fit is established with lubricant whereby if the load applied to the drum …
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
- Granted May 19, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 19, 1998.
- 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.