Indicator device
CA 1270308 C · Owner: Conradsson, Ake · Inventors: Conradsson, Ake
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An indicator device for determining the distance between the surface of a workpiece and a tool, both being set up in a working machine. The device comprises a lower portion with an underside which is intended to be mounted on the surface of the workpiece, and an upper portion with a topside which is parallel to the underside and is resilient in relation thereto against a spring force acting between said sides. The topside is electrically insulated from the underside and is designed to make contact with the tool. Parts of an electrical circuit are arranged between the topside and the underside and comprise inter alia a voltage source and an indicator means, which are coupled so that the …
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 June 12, 1990. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 12, 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.