Arm unit for use in pantograph type jack
CA 1266640 C · Owner: Riken Kaki Kogyo Co. Ltd. · Inventors: Suga, Hiroko
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An arm unit for use in a pantograph type jack wherein a main driving cam having an effective cam face constituted with an arc of a circle is formed to one side plate at the mounting end of a U-cross sectioned arm on the side of a bearing member with the effective cam face being protruded forwardly and upwardly from the mounting hole for the shaft bearing member, whereas a driven cam with a relatively moderate and long cam race different from the shape of the main driving cam is formed to the other of the side plates such that when a pair of opposed arms in an identical shape pivoted to the bearing member are rotated in the directions opposing to each at an equal angular velocity the main …
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 13, 1990. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 13, 2007.
- 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.