Vacuum nozzle for carpeted stair treads and risers
AssigneeCertified Chemical & Equipment Co.
InventorMarcus Copperman
Life of this patent
Estimating the term…
Abstract
A suction nozzle is provided which is comprised of a one piece outer cylindrical body member of predetermined fixed dimensions provided with an internal movable sleeve for adapting the nozzle to effectively and more conveniently extract dirt from carpeted stair treads or riser without changing the dimensions of the nozzle.
Claims7
A nozzle for cleaning a carpeted stair tread and riser comprising a hollow cylindrical body having a hollow extension in one end for connection to a source of suction, said body having an elongated port in its wall extending from the other end thereof and adjusted to lie against a surface having matter to be removed by said suction, and
- valve means cooperating with said body for selectively restricting the axial length of the passageway through said port to the width of a stair tread or a stair riser, said valve means comprising a hollow cylindrical sleeve member which conforms in size and shape to the inner wall of said body and being selectively rotatably mounted therein with a friction fit.
A nozzle for cleaning a carpeted stair tread and riser comprising a hollow cylindrical body having a hollow extension in one end for connection to a source of suction, said body having an elongated port in its wall extending from the other end thereof and adjusted to lie against a surface having matter to be removed by said suction, and
- valve means cooperating with said body member for selectively restricting the length of the passageway through said port to the width of a stair tread or a stair riser, said valve means comprising a hollow cylindrical sleeve member which conforms in size and shape to the inner wall of said body and is rotatably mounted therewith with a friction fit wherein the wall of said sleeve member is provided with a plurality of slots extending axially from the outer end thereof and which are angularly spaced, said slots being of different lengths, one of said slots corresponding to the length of a stair riser and another of said slots corresponding to the width of a stair tread.
Dependencies are inferred from the claim text.