Blocking device
CA 1212408 A · Owner: Rutley, Ross M. · Inventors: Mulvenna, James; Rutley, Ross M.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An improved cam element is disclosed for use in an anti-tip blocking device for preventing the opening of more than one file drawer in a file cabinet at one time. The improved cam element provides stop means to limit rotation of the cam element between two desired positions yet maintain a cylindrical body portion of the cam element free to be vertically slidable and rotatable within a vertical channel member.
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 October 7, 1986. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 7, 2003.
- 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.