Patent US3941241A successfully refreshed from Google Patents.
US3941241A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for cleaning moving balustrade belt
Assignee: Individual
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Filing: 1974-04-02
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Granted: 1976-03-02
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Expires: 1994-04-02
Abstract
Abstract A device for cleaning the balustrade belt of an escalator. The device has two opposed compartments connected to each other and is detachably but firmly fitted to the balustrade so as to rub the moving belt by means of a connector furnished on the escalator. The device has an inward pressing spring therein to cause a wiper placed between the device and the belt to be in pressing contact with the outer surface of the belt, the wiper being firmly held inside the device proper in a notched surface formed between two protrusions thereof.
Inventors
- 👤 Kinue Hishitani
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 15:07
CPC Classifications
B; B66; B66B; B66B31/00; B66B31/02
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
216 words
An apparatus for cleaning the moving handrail supported by the sidewalls of an escalator and the like, said apparatus comprising: wiping means in contact with said moving handrail for cleaning said handrail; compartment means surrounding and spaced from said moving handrail and removably secured to said escalator sidewall for holding said wiping means in contact with said moving handrail, said compartment means having open ends for allowing said moving handrail to pass therethrough, and said compartment means comprised of: two encasing halves surrounding said moving handrail; spring hinge means for hinging said two encasing halves together and biasing both of said halves inward toward said handrail, rims along the edges of each encasing half for containing said wiping means within said compartment means, projections on the inside edges of each half opposite said hinge means for engaging with and removably securing said compartment means to said fastening means, and two handles, one on each encasing half, to facilitate the positioning of said compartment means around said handrail and to facilitate the removal of said compartment means from around said handrail; and fastening means attached to said escalator sidewall for receiving and securing said compartment means surrounding said handrail to said escalator sidewall, whereby said compartment means can be attached around and removed from around said handrail.
Claim 2
Independent Claim
216 words
An apparatus for cleaning the moving handrail supported by the sidewalls of an escalator and the like, said apparatus comprising: wiping means in contact with said moving handrail for cleaning said handrail; compartment means surrounding and spaced from said moving handrail and removably secured to said escalator sidewall for holding said wiping means in contact with said moving handrail, said compartment means having open ends for allowing said moving handrail to pass therethrough, and said compartment means comprised of: two encasing halves surrounding said moving handrail; spring hinge means for hinging said two encasing halves together and biasing both of said halves inward toward said handrail, rims along the edges of each encasing half for containing said wiping means within said compartment means, projections on the inside edges of each half opposite said hinge means for engaging with and removably securing said compartment means to said fastening means, and two handles, one on each encasing half, to facilitate the positioning of said compartment means around said handrail and to facilitate the removal of said compartment means from around said handrail; and fastening means attached to said escalator sidewall for receiving and securing said compartment means surrounding said handrail to said escalator sidewall, whereby said compartment means can be attached around and removed from around said handrail.
Claim 3
Dependent Claim
45 words
A cleaning apparatus as claimed in claim 1 wherein said wiping means is comprised of a solvent-treated cleaning-material layer positioned for contact with said handrail; and a backing material layer attached to said cleaning-material layer removably fitted within the inside rims of said compartment means.
Claim 4
Dependent Claim
99 words
A cleaning apparatus as claimed in claim 1 wherein said fastening means is comprised of two fastening bars, a first fastening bar attached to the sidewall of said escalator on one side of said moving handrail and a second fastening bar attached to said sidewall on the other side of said handrail, said fastening bars having holes therein to receive the projections on the inside edges of said encasing halves, whereby said compartment means is removably fitted around said moving handrail by engaging the projections on the inside of the encasing halves in the holes in said fastening bars.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-03-02 | 1979-09-01 | 1980-03-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-03-02 | 1983-09-01 | 1984-03-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-03-02 | 1987-09-01 | 1988-03-02 | $7700.00 | Window Closed / Lapsed |