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Expired Canadian patentCanada

Vibrating earth ripping apparatus

CA 1234010 A · Owner: Carter, Orvil · Inventors: Carter, Orvil

CIPO record

Overview

Drawings and full text

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

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Abstract From the Canadian patent

A vibrating earth ripping machine which includes a main frame and a vibrating frame which is pivotally connected to the main frame by a pair of movable thrust absorbing arms. The vibrating frame extends beyond the main frame rear end and is secured to a transversely extending tool bar having a plurality of downwardly projecting ripper tines detachably secured thereto. A mass is rotatably mounted on the tool bar for eccentric mass distribution during rotation about a horizontal axis. A resilient vibration damping system is mounted between the main frame and vibrating frame to damp vibratory movement imparted to the vibrating frame by the rotating mass.

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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 March 15, 1988. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 15, 2005.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJanuary 21, 1985
GrantedMarch 15, 1988
Term endedMarch 15, 2005
Patent numberCA 1234010 A
Classification (IPC)A01B3/00 +2 more

Timeline

Timeline From CIPO dates

1986198819901992199419961998200020022004Application filedJan 21, 1985Patent grantedMarch 15, 1988Term endedMarch 15, 2005

Sources & verification

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