Roughing machine with damper mechanism
CA 1055255 A · Owner: International Shoe Machine Corporation · Inventors: Vornberger, Walter
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A roughing machine for roughing the margin of an upper that is moved past a roughing tool of the roughing machine. The roughing tool is incorporated in a roughing tool assembly that is yieldably urged downwardly against the upper margin under relatively low pressure. A damper mechanism has a follower element in engagement with the roughing tool assembly. The damper mechanism is so constructed that the follower element provides a resistance to upward movement of the roughing tool assembly of a relatively high magnitude and a downward force of a relatively low magnitude is imparted to the follower element.
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 29, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 29, 1996.
- 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.