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Expired Canadian patentCanada

Track tamping, leveling and lining operating unit

CA 1206809 A · Owner: Plasser (Franz) Bahnbaumaschinen-Industriegesellschaft M.B.H. · Inventors: Theurer, Josef

CIPO record

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Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

An operating unit for tamping leveling and lining a, track is comprised of a ballast tamping assembly comprising a tamping tool carrier, a drive for vertically adjusting the tamping tool carrier, pairs of vibratory and reciprocatory tamping tools, and drives for vibrating and reciprocating the tamping tools, a track leveling and lining assembly comprising track-engaging track lifting and lining tools drives for moving the tools respectively in a vertical and transverse direction for leveling and lining the track; and a common carrier frame supporting the assemblies a set of, flanged wheels constituting a sole support and guide element for a rear end of the carrier frame on the track in the, …

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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

  • Granted July 2, 1986. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 2, 2003.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJune 2, 1983
GrantedJuly 2, 1986
Term endedJuly 2, 2003
Patent numberCA 1206809 A
Classification (IPC)E01B27/17

Timeline

Timeline From CIPO dates

1984198619881990199219941996199820002002Application filedJune 2, 1983Patent grantedJuly 2, 1986Term endedJuly 2, 2003

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Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.