Blower and rotary rake for debris herding
First Claim
Patent Images
1. A lawn debris blower comprising:
- a chassis movable across the lawn;
a blower attached to the chassis, the blower producing a diverging flow of air; and
a tilted rotary rake attached to the chassis, the axis of the tilted rotary rake having a tilt from the normal direction to the lawn, the diverging flow of air from the blower being generally tangent to the lowest portion of the circumference of the tilted rotary rake, allowing the tilted rotary rake and the diverging flow of air to impel lawn debris in combination.
0 Assignments
0 Petitions
Accused Products
Abstract
A debris herding method and apparatus is described comprising a low power air blower and a tilted rotary rake. The air blower acts together with a tilted rotary rake to dislodge and impel the debris. A motor driven chassis transports the blower and the rotary rake across the lawn. The blower and rotary rake can be energetically powered, such as by a solar cell array mounted to the chassis. The present invention is directed to an energetically efficient device for moving debris on a surface, such as leaves on a lawn.
-
Citations
9 Claims
-
1. A lawn debris blower comprising:
-
a chassis movable across the lawn; a blower attached to the chassis, the blower producing a diverging flow of air; and a tilted rotary rake attached to the chassis, the axis of the tilted rotary rake having a tilt from the normal direction to the lawn, the diverging flow of air from the blower being generally tangent to the lowest portion of the circumference of the tilted rotary rake, allowing the tilted rotary rake and the diverging flow of air to impel lawn debris in combination. - View Dependent Claims (2, 3, 4, 5)
-
-
6. The lawn debris blower of clam 1, further comprising a height adjustment that varies the position of the tilted rotary rake on the chassis.
-
7. A method of impelling debris across a lawn, comprising:
-
blowing a diverging stream of air across a portion of the lawn; and mechanically agitating the portion of the lawn with the tines of a tilted rotary rake, allowing the diverging stream of air and the tines of a tilted rotary rake to impel lawn debris in combination. - View Dependent Claims (8, 9)
-
Specification