Conveying or excavating chain arrangment for track-laying machines
CA 2081087 A1 · Owner: Theurer, Josef · Inventors: Theurer, Josef
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A conveying or excavating chain arrangement (6) for a ballast bed cleaning machine (1), comprising an endless conveying or excavating chain (10) arranged on a machine frame (4) and guided in a vertically adjustable guide channel and connected to a chain drive (9). The guide channel has an excavating bar (26) located in operative use beneath the track (3) and in an inclined arrangement has an elevated discharge position (14) spaced apart from the excavating bar in the longitudinal direction of the machine. The excavating bar (26) is designed to be pivotable or adjustable in the horizontal plane in order to change the effective excavation width. Two excavating bars (26), designed so as to be …
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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
- Filed October 21, 1992. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 21, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 21, 2014.
- 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.