Brake having anchor bearing on spider
CA 2023237 C · Owner: Eaton Corporation · Inventors: Gee, Thomas Arthur
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An improved "expanding-shoe" drum brake (100) including a spider member (38) to which brake shoes (18 19) are pivotally mounted to move into engagement with a rotating annular brake drum (10). As is common the, shoes move in response to motion of a brake-actuating rotatable S cam (12), which is located between first adjacent ends of the brake shoes. The cam applies force to two cam followers (14, 15), which are rollers rotatably fixed to respective brake shoes. At the second end of each brake shoe an anchor pin (30, 31) is fixedly mounted to the brake shoe as by, welding (57A, 57B). In the embodiment described a, corresponding receptacle (43, 45) in the spider has a semicircular surface …
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 August 14, 1990 and granted June 24, 1997. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 14, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 14, 2012.
- 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.