Apparatus for measuring gap width of dual roller track
CA 1073663 A · Owner: Maschinenfabrik Gustav Wiegard · Inventors: Diederich, Gerd; Pleschiutschnigg, Fritz-Peter; Schrewe, Hans
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The apparatus includes a parallelogram-like foldable frame opposite corners of which carry centering rollers to position the frame between two opposite track rollers; feelers measure the distance to the latter. The frame can be hung between the tracks or is self-propelled by a belt drive. Some of the centering rollers can be used for reeling tests of the track rollers. : `
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 18, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 18, 1997.
- 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.