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Expired Canadian patentCanada

Sweeper hood with transverse air duct and broom compartments

CA 1092758 A · Owner: Fmc Corporation · Inventors: Gunnarsson, Arne N.

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

of the Invention, A street sweeper hood has a transverse main compartment with an intermediate transverse partition that stops short of the swept surface and divides the main compartment into a front transverse air duct compartment and a rear broom compartment. Air and debris enter an inlet port at the curb end of the air duct and are withdrawn at the opposite end by a blower, the stream of air and entrained debris being accelerated along the air duct by an inclined top plate. A flexible scoop at the curb side of the inlet port and a windrower at the opposite side deflect debris into a tunnel that forms the inlet port. -1a-

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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 January 6, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 6, 1998.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJuly 24, 1978
GrantedJanuary 6, 1981
Term endedJanuary 6, 1998
Patent numberCA 1092758 A
Classification (IPC)E01H1/08

Timeline

Timeline From CIPO dates

1979198119831985198719891991199319951997Application filedJuly 24, 1978Patent grantedJan 6, 1981Term endedJan 6, 1998

Sources & verification

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