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Expired Canadian patentCanada

Debris pan for rotary brush sweeper

CA 1287456 C · Owner: Fegan, Richard M. · Inventors: Seasholtz, Craig A.; Fegan, Richard M.; Berfield, Robert C.

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 rotary brush sweeper includes a debris pan with an inlet portion that glides on a surface being cleaned. The debris pan automatically disengages from the sweeper upon being engaged by an obstacle in the path of the sweeper. The debris pan is configured with an inlet portion or scoop for directing debris propelled by a rotary brush into the debris pan. The scoop portion has a first upwardly and rearwardly inclined surface and a second surface beneath the first surface and facing downwardly. A low friction material covers the first and second surfaces of the scoop to facilitate collection of debris into the debris pan. The covering may include an integrally formed tip portion of …

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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 August 13, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 13, 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.
FiledOctober 15, 1987
GrantedAugust 13, 1991
Term endedAugust 13, 2008
Patent numberCA 1287456 C
Classification (IPC)A47L11/22 +2 more

Timeline

Timeline From CIPO dates

1988199119941997200020032006Application filedOct 15, 1987Patent grantedAug 13, 1991Term endedAug 13, 2008

Sources & verification

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