Grinding machine for reprofiling railheads
CA 1313050 C · Owner: Fils D'Auguste Scheuchzer S.A. (Les) · Inventors: Buhler, Fritz
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The machine which comprises several grinding heads per stretch of rail and which may be moved in respect of height by means of lifting devices is equipped with an installation for automatically lifting grinding wheels (M1 to M8) in the critical zones of switches namely, frog and blade zones. This installation comprises on either side of each, stretch of rail (R1 R2), a pair of sensors (C1, C2, C3, C4) at the front and a pair of sensors (C'1 C'2, C'3, C'4) at the rear, detecting the starts of critical zones therefore the widening of the running tread in the zone of a switch and/or their auxiliary parts adjacent to the rails; a computation unit connected, on the one hand to the sensors and, …
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 January 26, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 26, 2010.
- 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.