Patent ID: 7329297
Filing Date: 2008-02-12
Classification: A01G,A47L,B02C

Abstract:
1. A free-flow apparatus for separating entrained yard debris from a transporting air stream by action of body forces thereupon comprising: a. a curvilinear primary duct having an outer wall, an interior wall, an entrance for accepting a stream of air bearing entrained yard debris and an exit; said curvilinear primary duct being adapted for conducting said stream of air bearing entrained yard debris from said entrance to said exit; b. a secondary-separation chamber having a roof; a generally frusto-conical outer peripheral wall portion and an opening defined thereinto, a portion of said outer wall of said curvilinear primary duct adjacent to said duct exit being generally tangential to a portion of said generally frusto-conical outer peripheral wall portion of said secondary-separation chamber in a first location adjacent to said opening, a portion of said interior wall of said curvilinear primary duct adjacent to said duct exit defining an acute angle with another portion of said generally frusto-conical outer peripheral wall portion at a second location generally opposed to said first location adjacent to said opening; c. said secondary-separation chamber being at least partially encompassed by said curvilinear primary duct; d. said secondary-separation chamber being adapted to receive said stream of air bearing entrained yard debris from said exit of said curvilinear primary duct; e. said generally frusto-conical outer peripheral wall portion of said secondary-separation chamber being adapted to separate said stream of air bearing entrained yard debris into an outwardly located debris-enriched stream and an inwardly located debris-depleted stream by action of body forces thereupon as said stream of air bearing entrained yard debris passes tangentially thereto; f. an accumulation chamber located below said secondary-separation chamber for receiving debris from said outwardly located debris-enriched stream; g. a baffle means centrally disposed between said secondary-separation chamber and said accumulation chamber for impeding passage of fine particulates from said accumulation chamber into said debris-depleted stream; and h. said roof of said secondary-separation chamber having defined therein a generally centrally located passage adapted to exhaust air from said inwardly located debris-depleted stream to the atmosphere.