Leaf blower back pack frame
First Claim
Patent Images
1. A back pack for use in carrying a blower, the back pack having a frame and straps for removably supporting the back pack and blower on an operator, said frame comprising:
- a first portion adapted to, at least partially, removably support a blower thereon; and
a second portion fixedly connected to said first portion and having a first side and a second side, said first side being adapted to be removably supported on an operator'"'"'s back, said second side having an intake restrictor suitably sized, shaped, and located relative to said first portion for operably cooperating with an air intake of a blower mounted to the back pack to provide a restrictive air flow space between the blower and said second side and, said restrictor is adapted to substantially prevent intrusion of foreign objects into a blower air intake, to reduce noise emanating from a blower air intake, and to nonetheless allow proper air flow through the space into the blower air intake.
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Accused Products
Abstract
A leaf blower having a back pack frame. The frame can support a leaf blower unit on an operator'"'"'s back with the use of shoulder straps. The frame generally has an L-shape with an intake restrictor ring that can cooperate with an air intake section of a blower mounted to the back pack frame to substantially prevent intrusion of foreign objects into the blower unit and to reduce noise emanating from the blower air intake section.
53 Citations
12 Claims
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1. A back pack for use in carrying a blower, the back pack having a frame and straps for removably supporting the back pack and blower on an operator, said frame comprising:
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a first portion adapted to, at least partially, removably support a blower thereon; and a second portion fixedly connected to said first portion and having a first side and a second side, said first side being adapted to be removably supported on an operator'"'"'s back, said second side having an intake restrictor suitably sized, shaped, and located relative to said first portion for operably cooperating with an air intake of a blower mounted to the back pack to provide a restrictive air flow space between the blower and said second side and, said restrictor is adapted to substantially prevent intrusion of foreign objects into a blower air intake, to reduce noise emanating from a blower air intake, and to nonetheless allow proper air flow through the space into the blower air intake. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A blower comprising:
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a blower unit having an engine, an air intake, an air outlet, and means for blowing air from said air intake to said air outlet; and a back pack frame having a general L-shape with a first horizontal portion and an integral second vertical portion and being comprised of a thermoplastic material, said first portion being adapted to, at least partially, support said blower on a top side thereof, said second portion having a first side and a second side, said second side having an intake restrictor extending therefrom, said intake restrictor being suitably sized, shaped, and located relative to said air intake to be spaced from said air intake and substantially surround a portion of said air intake to allow air to access said air intake through a space between said air intake and said second side, but adapted to substantially prevent intrusion of foreign objects into said air intake through said space and to reduce noise emanating from said air intake. - View Dependent Claims (8, 9, 10, 11)
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12. A back pack for use in carrying a blower, the back pack having an L-shaped frame and straps for removably supporting the back pack and a blower on an operator, said frame comprising:
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means for mounting a blower to said frame; and means for substantially preventing intrusion of foreign objects into a blower air inlet and for reducing noise emanating from a blower air inlet including an inlet restrictor ring extending from a wall of said L-shaped frame intended to have the blower air inlet located in close proximity thereto, said ring being adapted to substantially surround an air inlet of a blower mounted to the back pack and form a restrictive space between said wall and an air inlet for operably cooperating with an air inlet of a blower to allow air to flow through the space, but to prevent intrusion of foreign objects and reduce noise without substantially restricting flow of air through said space.
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Specification