Indicator nozzle for cleaning devices
DCFirst Claim
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1. A cleaning device comprising:
- a nozzle;
suction means for removing fluid from a surface through said nozzle;
means for separating air and fluid connected between said nozzle and said suction means;
a conduit connecting said nozzle to said separating means; and
viewing means in said nozzle for slowing down the speed of said fluid to permit viewing of said removed fluid by an operator standing to the rear of said device during operation of said cleaning device, said viewing means including a top wall of transparent material and a bottom wall of non-transparent material which diverge from each other while remaining sufficiently close to maintain said removed fluids adjacent said transparent top wall where said removed fluids are visible.
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Abstract
A suction nozzle for a cleaning device having a viewing area which slows down the speed of the liquid in the nozzle to permit viewing by the operator during operation of the cleaning device. The viewing area has a greater cross-sectional area than the nozzle as well as having eddy currents produced therein by a U-shaped nozzle to produce the slowing down.
68 Citations
19 Claims
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1. A cleaning device comprising:
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a nozzle; suction means for removing fluid from a surface through said nozzle; means for separating air and fluid connected between said nozzle and said suction means; a conduit connecting said nozzle to said separating means; and viewing means in said nozzle for slowing down the speed of said fluid to permit viewing of said removed fluid by an operator standing to the rear of said device during operation of said cleaning device, said viewing means including a top wall of transparent material and a bottom wall of non-transparent material which diverge from each other while remaining sufficiently close to maintain said removed fluids adjacent said transparent top wall where said removed fluids are visible. - View Dependent Claims (2, 3, 4, 5, 6, 13)
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- 7. A cleaning device comprising a nozzle, suction means for removing fluid from a surface through said nozzle, means for separating air and fluid connected between said nozzle and said suction means, viewing means in said nozzle for slowing down the speed of said fluid to permit viewing of said removed fluid by an operator standing to the rear of said device during operation thereof, and wherein said suction means includes a nozzle having an inlet passage and an outlet passage, said inlet passage has a U-shaped cross-section along a plane transverse to its flow axis, and said viewing means includes said outlet passage having a substantially rectangular cross-section whereby the flow from the legs of said U-shaped inlet passage create eddy currents in the flow from the bight of said U-shaped inlet passage in said outlet passage to produce said slowing down of fluid in said viewing means.
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14. A cleaning device comprising:
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a nozzle having inlet and outlet passages; a conduit connected to said outlet passage; suction means communicating with said nozzle through said conduit for removing fluid from a surface through said nozzle'"'"'s passages in the flow direction from said inlet to said outlet passage; said outlet passage having a substantially horizontal, transparent top wall portion and a back wall which diverge in said flow direction while remaining sufficiently close to maintain said removed fluid adjacent said top wall to permit viewing of said removed fluid by an operator during operation of said cleaning device. - View Dependent Claims (15, 16, 17, 18, 19)
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Specification