Brushing – scrubbing – and general cleaning – Machines – With air blast or suction
Patent
1986-09-17
1988-04-12
Moore, Chris K.
Brushing, scrubbing, and general cleaning
Machines
With air blast or suction
417 76, A47L 518
Patent
active
047364890
ABSTRACT:
A jet pump vacuum device for picking up debris includes an elongated tubular vacuum member having an input end and an output end and a high pressure air tube for discharging a jet of high pressure air into said elongated vacuum member at a point therein between said input and output ends, whereby said high pressure air discharged flows to said output end and draws ambient air into said input end, the flow of said ambient air into said input end being sufficient to carry said debris into said input end, through said vacuum member and out said output end is adapted with means for varying the position of said point of discharge of high pressure air within said elongated vacuum member. In a preferred embodiment an elongated opening is provided in a side of the elongated vacuum member through which the high pressure tube projects into the elongated vacuum member, means are provided for sealing between the high pressure air tube and the vacuum member opening and the high pressure air tube is moveable along the elongated vacuum member side wall opening, so that the longitudinal position of the high pressure air tube within the elongated vacuum member is variable.
REFERENCES:
patent: 1172450 (1916-02-01), Griffin
patent: 2055577 (1936-09-01), Huff
patent: 2091642 (1937-08-01), Lingenbrink
patent: 2856205 (1958-10-01), Coleman et al.
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