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US3816872A Expired / Lapsed US ⏱️ 0.0 years remaining

Vacuum cleaner suction tool for cleaning deep pile shag rugs

Assignee: Individual
•
Filing: 1973-01-19
•
Granted: 1974-06-18
•
Expires: 1993-01-19
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Abstract

Abstract In accordance with the present invention there is provided a suction tool having a plurality of spaced narrow, hollow nozzles depending from the body of the tool and elongated in a horizontal direction parallel to the normal forward and backward horizontal movement of the tool. The lower surfaces or lips of these nozzles are curved upwardly at their opposite ends and the interior surfaces of the nozzles adjacent their opposite ends are convexly curved. The hollow nozzles communicate with the interior of the body of the tool, which in turn is connected through the usual hollow wand or handle and flexible hose with a source of suction in a vacuum cleaner unit. This construction enables the several nozzles to penetrate the deep pile of a shag rug by parting the fibers and thus the nozzle openings are brought fairly close to the base of the rug and the air flow into the nozzles is able to entrain deeply embedded dirt. The shape of the nozzles enables them to be moved with reasonable ease between and over the fibers and to comb out the fibers as the tool is moved.

Inventors

  • 👤 R Evans
  • 👤 J Hoover
  • 👤 F Bayless
  • 👤 H Brundage

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-08 21:28
CPC Classifications
A; A47; A47L; A47L9/00; A47L9/02

Claims Analysis

Total Claims: 5
Claim 1
Independent Claim 126 words
In a vacuum cleaner suction tool for cleaning high pile shag rugs, a hollow elongated body, means for connecting the interior of said body to a source of suction, a plurality of spaced hollow tubes depending from said body and communicating with the interior thereof, the lower end of each tube terminating in a suction nozzle elongated in a horizontal direction substantially at right angles to the horizontal lengthwise extent of said body, the length of each nozzle being substantially greater than the dimension of the tube in a direction parallel to the length of the nozzle, said hollow body being formed with at least one surface cleaning suction opening, and valve means for regulating air flow alternatively through said opening and through said nozzles, respectively.
Claim 2
Dependent Claim 126 words
In a vacuum cleaner suction tool for cleaning high pile shag rugs, a hollow elongated body, means for connecting the interior of said body to a source of suction, a plurality of spaced hollow tubes depending from said body and communicating with the interior thereof, the lower end of each tube terminating in a suction nozzle elongated in a horizontal direction substantially at right angles to the horizontal lengthwise extent of said body, the length of each nozzle being substantially greater than the dimension of the tube in a direction parallel to the length of the nozzle, said hollow body being formed with at least one surface cleaning suction opening, and valve means for regulating air flow alternatively through said opening and through said nozzles, respectively.
Claim 3
Dependent Claim 57 words
In a suction nozzle as defined in claim 1, said surface cleaning suction opening being formed in the wall of said body opposite to nozzles, and the connecting means comprising a tubular member rotatably mounted with respect to said body and serving as said valve for regulating air flow alternatively through said opening and said nozzles, respectively.
Claim 4
Dependent Claim 49 words
In a suction nozzle as defined in claim 1, said body being formed with a plurality of surface cleaning suction openings, said openings being located in the lower wall thereof between said hollow tubes, said valve means regulating air flow alternatively through said openings and through said nozzles, respectively.
Claim 5
Dependent Claim 101 words
In a suction nozzle as defined in claim 1, a partition dividing said hollow body into a forward chamber and a rear chamber, the lower wall of one of said chambers being formed with said surface cleaning suction opening, said hollow tubes communicating with the other of said chambers, and the connecting means comprising a tubular member slidably mounted in the rear wall of said rear chamber and in said portion and formed with a port alignable with either of said chambers, said tubular member serving as said valve for regulating air flow alternatively through said opening and said nozzles, respectively.

References Cited (Backward Citations)

US963049A Cited
US2590527A Cited
US3150402A Cited
US3611473A Cited
US3668735A Cited
US3708824A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1977-06-17 1977-12-17 1978-06-18 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1981-06-17 1981-12-17 1982-06-18 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1985-06-17 1985-12-17 1986-06-18 $7700.00 Window Closed / Lapsed

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