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US3815333A Expired / Lapsed US ⏱️ 0.0 years remaining

Dampening unit for an electric vacuum sweeper bag

Assignee: Individual
•
Filing: 1973-06-01
•
Granted: 1974-06-11
•
Expires: 1993-06-01
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Abstract

Abstract A dampening unit to reduce dust emission from the sweeper bag for an electrically operated vacuum sweeper, said unit adapted for disposition around the sweeper bag, and comprising an external skeletal network of tubular members depending and connected to a water container located at the top of the sweeper bag, the first of such tubular members being a series of horizontally disposed tubular rings aligned parallel to one another in a succession of imaginary planes intersecting at spaced intervals the central longitudinal and vertical axis of the sweeper bag; the second set of such tubular members being vertically depending tubular connections each of which connect the water container with a respective horizontal tubular member; a third set of finely perforated members which depend vertically downwardly from the horizontal tubular members to carry and disperse water on the sweeper bag; through which tubular connections water placed in the water container can seep downwardly in a controlled manner into the horizontal tubular members and thence into the vertically disposed perforated tubular members to reach the fabric material of the sweeper bag in order to dampen it.

Inventors

  • 👤 A Rhodes

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-08 19:48
CPC Classifications
A; A47; A47L; A47L9/00; A47L9/10; A47L9/18; A47L9/183; A47L9/14; B; B01; B01D; B01D47/00; B01D47/06

Claims Analysis

Total Claims: 8
Claim 1
Independent Claim 104 words
A dampening unit for a sweeper for fitting over a vertically extending sweeper bag for an electrical vacuum sweeper bag comprising a: 1. a water container affixed to the top of the sweeper bag; 2. vertically depending tubes extending from the water container and surrounding the outer periphery of the sweeper bag; 3. a series of horizontal circular tubular members connected to the vertically extending tubular members by internal chambers which horizontal tubular members extend around the outer periphery of the sweeper bag; 4. vertically depending perforated tubes extending from the horizontal tubular members and venting into the outer periphery of the sweeper bag.
Claim 2
Dependent Claim 104 words
A dampening unit for a sweeper for fitting over a vertically extending sweeper bag for an electrical vacuum sweeper bag comprising a: 1. a water container affixed to the top of the sweeper bag; 2. vertically depending tubes extending from the water container and surrounding the outer periphery of the sweeper bag; 3. a series of horizontal circular tubular members connected to the vertically extending tubular members by internal chambers which horizontal tubular members extend around the outer periphery of the sweeper bag; 4. vertically depending perforated tubes extending from the horizontal tubular members and venting into the outer periphery of the sweeper bag.
Claim 3
Dependent Claim 17 words
vertically depending tubes extending from the water container and surrounding the outer periphery of the sweeper bag;
Claim 4
Dependent Claim 17 words
vertically depending tubes extending from the water container and surrounding the outer periphery of the sweeper bag;
Claim 5
Dependent Claim 30 words
a series of horizontal circular tubular members connected to the vertically extending tubular members by internal chambers which horizontal tubular members extend around the outer periphery of the sweeper bag;
Claim 6
Dependent Claim 30 words
a series of horizontal circular tubular members connected to the vertically extending tubular members by internal chambers which horizontal tubular members extend around the outer periphery of the sweeper bag;
Claim 7
Dependent Claim 20 words
vertically depending perforated tubes extending from the horizontal tubular members and venting into the outer periphery of the sweeper bag.
Claim 8
Dependent Claim 20 words
vertically depending perforated tubes extending from the horizontal tubular members and venting into the outer periphery of the sweeper bag.

References Cited (Backward Citations)

US1691514A Cited
US1821202A Cited
US1944976A Cited
US2165677A Cited
US2057446A Cited
US2751041A Cited
US3535855A Cited
US3745751A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1977-06-10 1977-12-10 1978-06-11 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1981-06-10 1981-12-10 1982-06-11 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1985-06-10 1985-12-10 1986-06-11 $7700.00 Window Closed / Lapsed

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