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US3892004A Expired / Lapsed US ⏱️ 0.0 years remaining

Domestic cleaning apparatus

Assignee: Individual
•
Filing: 1972-10-06
•
Granted: 1975-07-01
•
Expires: 1992-10-06
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Abstract

Abstract Venetian-blind slat-cleaning apparatus comprises a hand held housing from which a pair of cleaning elements project. The elements are contiguously mounted for cleaning opposite sides of a single slat and they are free of mechanical interconnections externally of the housing to enable blinds to be cleaned in situ by engagement of a slat as a result of movement of the apparatus laterally with respect to the slat. The drive for the cleaning elements may be rotary or reciprocal linear vibratory and the cleaning elements may be associated with releasable splash guards.

Inventors

  • 👤 Thomas Downes

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-01 01:08
CPC Classifications
A; A46; A46B; A46B13/00; A46B13/02; A46B13/04; A47; A47L; A47L4/00; A47L4/02

Claims Analysis

Total Claims: 5
Claim 1
Independent Claim 176 words
Portable apparatus for cleaning venetian blinds or the like, comprising a housing adapted to be hand-held, a pair of contiguously-mounted slat-cleaning elements mounted on rotatable hollow shafts projecting from the housing, said shafts being free at their ends remote from said housing, an electrically-operated motor mounted in said housing and coupled to rotate said shafts, a reservoir formed in the housing for storing cleaning liquid and having an outlet port, conduit means coupling said outlet port with the hollow interior of said shafts, and means forming perforations in the walls of said shafts in the region thereof mounting said slat-cleaning elements, to permit said cleaning elements to receive cleaning liquid, there being a plurality of said perforations spaced apart lengthwise along each said hollow shaft, the portions of said elements which are external to the housing being free of mechanical interconnections to permit the apparatus to engage a slat to be cleaned by movement of the apparatus laterally with respect to the slat so that opposite sides of a slat are engaged simultaneously by said elements.
Claim 2
Dependent Claim 176 words
Portable apparatus for cleaning venetian blinds or the like, comprising a housing adapted to be hand-held, a pair of contiguously-mounted slat-cleaning elements mounted on rotatable hollow shafts projecting from the housing, said shafts being free at their ends remote from said housing, an electrically-operated motor mounted in said housing and coupled to rotate said shafts, a reservoir formed in the housing for storing cleaning liquid and having an outlet port, conduit means coupling said outlet port with the hollow interior of said shafts, and means forming perforations in the walls of said shafts in the region thereof mounting said slat-cleaning elements, to permit said cleaning elements to receive cleaning liquid, there being a plurality of said perforations spaced apart lengthwise along each said hollow shaft, the portions of said elements which are external to the housing being free of mechanical interconnections to permit the apparatus to engage a slat to be cleaned by movement of the apparatus laterally with respect to the slat so that opposite sides of a slat are engaged simultaneously by said elements.
Claim 3
Dependent Claim 32 words
Apparatus according to claim 1, including a pump mechanism mounted in said housing and coupled to pump liquid in said reservoir to said cleaning elements, and manually-operable control means for said pump.
Claim 4
Dependent Claim 20 words
Apparatus according to claim 1, wherein the housing includes releasable splash guards mounted on opposite sides of said cleaning elements.
Claim 5
Dependent Claim 50 words
Apparatus according to claim 1, wherein said reservoir comprises a cleaning liquid-containing canister releasably mounted on the housing, the canister being internally pressurized and having said valved liquid outlet port thereon, and control means mounted on the housing and operable selectively to open and close said valved liquid outlet port.

References Cited (Backward Citations)

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USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1978-06-30 1978-12-30 1979-07-01 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1982-06-30 1982-12-30 1983-07-01 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1986-06-30 1986-12-30 1987-07-01 $7700.00 Window Closed / Lapsed

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