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Expired Canadian patentCanada

Robotic crawling device

CA 1281349 C · Owner: Cottam, Spencer D. · Inventors: Cottam, Spencer D.

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 robotic crawling device that can traverse vertical and overhead surfaces while carrying other equipment. The device preferably includes a platform (10) that remains a substantially fixed distance from the surface. The platform (10) rides on a crawling mechanism which includes an outer housing (56) and an inner housing (46) positioned within the outer housing (56). A turning mechanism can be mounted with the inner housing (46) to allow the device to be advanced in any direction.

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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 12, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 12, 2008.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMay 12, 1987
GrantedMarch 12, 1991
Term endedMarch 12, 2008
Patent numberCA 1281349 C
Classification (IPC)B62D57/02 +1 more

Timeline

Timeline From CIPO dates

1988199119941997200020032006Application filedMay 12, 1987Patent grantedMarch 12, 1991Term endedMarch 12, 2008

Sources & verification

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