Perimeter seal structure for a cleaning head
First Claim
1. In connection with a surface covering material cleaning machine, a nozzle structure comprisinga housing member substantially rectangular in transverse section having a vertically tapered forward terminal portion,said housing having a vacuum chamber and a cleaning chamber therein,a cleaning fluid line extending into said cleaning chamber,an adjustable air port into said cleaning chamber,a flange disposed about said terminal portion adjacent the end portion thereof,a seal member removably disposed to overlie said flange,said seal member being arranged and constructed as to provide therethrough a predetermined admission of air, andsaid admission of air being balanced with the air admitted through said port.
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Accused Products
Abstract
A cleaning head for a hard or a yielding surface cleaning machine having a cleaning and a suction chamber therein, the cleaning head having an annular seal overlying the bottom edge portion thereof, the cleaning head having an incoming jet stream of aerated cleaning fluid, the seal having a predetermined density, porosity or particularly defined air passages to provide a controlled accessability of air into the cleaning chamber in operative association therein with the incoming stream of cleaning fluid.
35 Citations
11 Claims
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1. In connection with a surface covering material cleaning machine, a nozzle structure comprising
a housing member substantially rectangular in transverse section having a vertically tapered forward terminal portion, said housing having a vacuum chamber and a cleaning chamber therein, a cleaning fluid line extending into said cleaning chamber, an adjustable air port into said cleaning chamber, a flange disposed about said terminal portion adjacent the end portion thereof, a seal member removably disposed to overlie said flange, said seal member being arranged and constructed as to provide therethrough a predetermined admission of air, and said admission of air being balanced with the air admitted through said port.
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4. In connection with a surface covering material cleaning machine, a nozzle structure comprising
a housing member having an upper and lower wall connected by side walls forming a vertically tapered terminal portion, a plate member underlying and being spaced below the forward portion of said lower wall, said plate member having side walls and a rear wall extending upwardly to be secured to said lower wall forming a part of said terminal portion, said plate member forming a chamber with said lower wall, a cleaning fluid line extending to said end wall and having a jet projecting into said chamber, an air port in said rear wall, means carried by said rear wall adjusting said air port, a plate member forming a flange about said terminal portion substantially at right angles to the walls thereof, a seal member of predetermined porosity overlying said flange, said seal member controlling the admission of air therethrough, and said air port being adjusted to balance with said air flow as admitted through said seal member relative to the porosity of surface material to be cleaned.
Specification
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Current AssigneeDale L. Grave
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Original AssigneeDale L. Grave
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InventorsGrave, Dale L.
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Primary Examiner(s)MOORE, CHRISTOPHER K
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Application NumberUS07/042,020Time in Patent Office277 DaysField of Search15/321, 15/322, 15/420, 15/421US Class Current15/322CPC Class CodesA47L 11/30 by suctionA47L 11/34 Machines for treating carpe...A47L 11/4044 Vacuuming or pick-up tools;...A47L 11/4088 Supply pumps; Spraying devi...
