Brushing – scrubbing – and general cleaning – Machines – With air blast or suction
Reexamination Certificate
2006-04-04
2006-04-04
Till, Terrence R. (Department: 1744)
Brushing, scrubbing, and general cleaning
Machines
With air blast or suction
C015S332000
Reexamination Certificate
active
07020930
ABSTRACT:
A lawn sweeper is provided having rotary brushes mounted in a housing and projecting through a bottom opening in the housing for sweeping up debris. A vacuum fan with an internal shredder is also mounted to the housing and communicates through a vacuum chute with the bottom opening for drawing in, shredding and discharging debris swept up by the brushes. A damper valve plate is disposed in the vacuum chute between the brushes and the vacuum fan and is operable for closing off the vacuum chute to provide a leaf vacuum port. A linkage is connected to a damper valve plate and also to the drive for the brushes to simultaneously disengage the drive for the brushes and to close off the vacuum chute with the damper valve plate.
REFERENCES:
patent: 1356272 (1920-10-01), Dunn
patent: 2538643 (1951-01-01), Gregory
patent: 2590734 (1952-03-01), Strong
patent: 2661584 (1953-12-01), Ronning
patent: 2824335 (1958-02-01), Moffat
patent: 3087180 (1963-04-01), Webster
patent: 3184777 (1965-05-01), Norden
patent: 3189932 (1965-06-01), Daneman
patent: 3406424 (1968-10-01), Rush
patent: 3409933 (1968-11-01), Larsson
patent: 3491399 (1970-01-01), Burgoon et al.
patent: 3790986 (1974-02-01), Burger
patent: 3808632 (1974-05-01), Aagesen
patent: 3822436 (1974-07-01), Burgoon
patent: 3859777 (1975-01-01), Doering
patent: 3959846 (1976-06-01), Yasuda
patent: 3995415 (1976-12-01), Hoffmann
patent: 4366593 (1983-01-01), Parikh
patent: 4567623 (1986-02-01), Walton
patent: 4654927 (1987-04-01), Novinger
patent: 5005597 (1991-04-01), Popelier et al.
patent: 5010620 (1991-04-01), Young
patent: 5134838 (1992-08-01), Swisher et al.
patent: 5249332 (1993-10-01), Wilkerson
patent: 5287684 (1994-02-01), Beroth
patent: 5404613 (1995-04-01), Whyte
patent: 5435118 (1995-07-01), Cobile
patent: 5718017 (1998-02-01), Pavlick
patent: 6003195 (1999-12-01), Whitney
patent: 6519805 (2003-02-01), Firdaus et al.
patent: 6574828 (2003-06-01), Hile
patent: 411229336 (1999-08-01), None
Carothers & Carothers
Till Terrence R.
LandOfFree
Combination lawn care sweeper thatcher shredder does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Combination lawn care sweeper thatcher shredder, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Combination lawn care sweeper thatcher shredder will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3619630