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Expired Canadian patentCanada

Material collection apparatus

CA 1291340 C · Owner: Leistikow, Keith A. · Inventors: Hoepfner, Thomas L.; Leistikow, Keith A.

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 lawn mower mounted on a tractor is equipped with a blower operable to move grass clippings and loose debris from the mower into collection bags. The blower has a rotatable impeller located within a housing attached to the side of the mower. A belt and pulley drive connects the horizontal impeller shaft to an upright blade drive shaft of the mower to rotate the impeller concurrently with the grass cutting blades of the mower. A pair of idler pulleys mounted on one or more supports secured to the housing aligned a single endless belt with the vertical pulley on the impeller drive shaft and change the orientation of the belt from horizontal to vertical and back to horizontal as 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 October 29, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 29, 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.
FiledAugust 17, 1987
GrantedOctober 29, 1991
Term endedOctober 29, 2008
Patent numberCA 1291340 C
Classification (IPC)A01D34/63 +2 more

Timeline

Timeline From CIPO dates

1988199119941997200020032006Application filedAug 17, 1987Patent grantedOct 29, 1991Term endedOct 29, 2008

Sources & verification

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