Variable high/low vacuum/blower device
First Claim
1. A vacuum/blower device having vacuum/blower means for engaging debris comprising:
- a housing having air flow channels;
air inlet/outlet means extending through said housing and connected to said air flow channels;
means for establishing high pressure/low air flow in said air flow channels;
means for establishing low pressure/high air flow in said air flow channels; and
means for selectively changing the air pressure and air flow in said air flow channels from high pressure/low air flow to low pressure/high air flow when operated as a vacuum device and also as a blower device.
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Accused Products
Abstract
A variable high/low vacuum/blower device is disclosed as including an interchangeable vacuum or blower device with high pressure/low air flow or low pressure/high air flow operation. The device includes a housing having air flow channels. Air inlet and air outlet ports or openings extend through the housing and are connected to the air flow channels. Motor driven blower wheels create air flow through the air flow channels. A first valve, operable between first and second position, can selectively change the air flow in the air flow channels from high pressure/low air flow to low pressure/high air flow, while a second valve, also operable between first and second positions, can selectively change the air flow through the air inlet and air outlet ports or openings, enabling the device to operate either as a vacuum or blower device. The first valve is adjustable to variable positions from high pressure/low air flow through zero to low pressure/high air flow. The second valve is also adjustable to variable positions from maximum vacuum through zero to maximum blowing.
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Citations
25 Claims
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1. A vacuum/blower device having vacuum/blower means for engaging debris comprising:
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a housing having air flow channels; air inlet/outlet means extending through said housing and connected to said air flow channels; means for establishing high pressure/low air flow in said air flow channels; means for establishing low pressure/high air flow in said air flow channels; and means for selectively changing the air pressure and air flow in said air flow channels from high pressure/low air flow to low pressure/high air flow when operated as a vacuum device and also as a blower device. - View Dependent Claims (2, 3, 4, 5, 25)
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6. A vacuum/blower device having vacuum/blower means including:
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a housing having air flow channels; air inlet/outlet means extending through said housing and connected to said air flow channels; means for establishing high pressure/low air flow in said air flow channels; means for establishing low pressure/high air flow in said air flow channels; means for selectively changing the air pressure and air flow in said air flow channels from high pressure/low air flow to low pressure/high air flow when operated as a vacuum device and also as a blower device. - View Dependent Claims (7, 8, 9, 10, 11, 12, 13, 14)
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15. A vacuum/blower device having vacuum/blower means including:
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a housing; an air inlet/outlet port extending through the housing; a motor operatively connected to means within the housing for creating air flow in and through said housing; means for establishing high pressure/low air flow in said air flow channels; means for establishing low pressure air flow in said air flow channels; means for selectively changing the air pressure and air flow in said air flow channels from high pressure/low air flow operation to low pressure/high air flow operation when operated as a vacuum device and also as a blower device; means for selectively changing said air flow through said air inlet/outlet port from a positive air outflow through zero to a negative air inflow; and air exhaust/intake means also extending through said housing for exhausting air when there is a negative air inflow and for intaking air when there is a positive air outflow. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22)
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23. A vacuum/blower device having vacuum/blower means including:
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a housing having an air inlet/outlet port extending through the housing;
said housing having air flow channels connected to said port;a motor disposed within said housing; blower wheel means operated by said motor for directing high pressure/low air flow or low pressure/high air flow through said air flow channels dependent on the position of first valve means; said first valve means connected to said air flow channels for changing the air pressure and air flow from a high pressure/low air flow to a low pressure/high air flow operation when operated as a vacuum device and also as a blower device; second valve means connected to said air flow channels for changing the air flow through said air flow inlet/outlet port from a positive air flow through zero to a negative air inflow; said vacuum/blower device operating as either a vacuum with a negative air inflow or as a blower with a positive air outflow dependent on the position of said second valve means; and air exhaust/intake means also extending through said housing for exhausting air when operated as a vacuum device and for intaking air when operated as a blower device. - View Dependent Claims (24)
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Specification