Long travel beam jack
CA 1301737 C · Owner: Spector, George · Inventors: Spector, George; Gordon, Wesley A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A jack for supporting a ceiling beam is provided and consists of a pair of vertical sliding support members operated by a winch mechanism with cable which allows one person to set the beam. The jack will lift heavy loads eliminating the need for a crane and more manpower. In a modification the winch handle can be operated by a foot lever on base of the jack. -10-
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 26, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 26, 2009.
- 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.