A - Human Necessities – 47 – L
Patent
A - Human Necessities
47
L
15/54
A47L 5/34 (2006.01) A47L 9/02 (2006.01) A47L 9/08 (2006.01) E01H 1/08 (2006.01) E01H 1/10 (2006.01) E04D 15/00 (2006.01)
Patent
CA 1132767
Abstract A vacuum cleaner head especially useful for removing loose and partially embedded gravel and similar particulates from roofs and other surfaces, having a nozzle supported slightly out of contact with the surface being cleaned, by a peripheral glide shoe, shielded jets for introducing high velocity fluid into the nozzle, adjustable vents for introducing ambient air into the nozzle, and adjustments for the nozzle height and jet direction and height.
353077
Sherman
Tremco Incorporated
LandOfFree
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