Safety gate assembly
CA 1201617 A · Owner: Roly-Door Sales Company Of Rochester, Inc. · Inventors: Harris, William S.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract, SAFETY GATE ASSEMBLY, A safety gate assembly includes a pair of gates guarding a pre-selected area, the gates being coupled together with cables and pulleys so that one of the gates is always closed to prevent someone from accidentally walking through the area and being injured. The gates are balanced to make movement thereof easy and self-biased to stably open and closed positions.
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 March 11, 1986. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 11, 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.