US4934512A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cleaning device for armrest belt conveyor of the electric escalator
Assignee: Individual
•
Filing: 1989-03-16
•
Granted: 1990-06-19
•
Expires: 2009-03-16
Abstract
Abstract An apparatus for cleaning an armrest belt conveyor of an escalator. The apparatus permits use of the escalator during cleaning. Preferably, excess cleaner can be scraped off from the conveyor and reused.
Inventors
- 👤 Hwang F. Lin
- 👤 Se K. C. Wu
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 17:06
CPC Classifications
B; B65; B65G; B65G45/00; B65G45/10; B65G45/22; B66; B66B; B66B31/00; B66B31/02
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
108 words
An apparatus for cleaning an armrest belt conveyer of an escalator, said apparatus comprising: (A) a container for containing a supply of cleaning liquid, said container being dimensioned so as to fit beneath the armrest belt conveyer of the escalator at a lower front end of the armrest belt conveyer so as not to interfere with use of the escalator; and (B) a spreading device located within said container, said spreading device including: (a) a lower absorbent end for absorbing cleaning liquid upwardly from the supply of cleaning liquid; and (b) an upper end for spreading cleaning liquid onto the armrest belt conveyer during use of the escalator.
Claim 2
Independent Claim
108 words
An apparatus for cleaning an armrest belt conveyer of an escalator, said apparatus comprising: (A) a container for containing a supply of cleaning liquid, said container being dimensioned so as to fit beneath the armrest belt conveyer of the escalator at a lower front end of the armrest belt conveyer so as not to interfere with use of the escalator; and (B) a spreading device located within said container, said spreading device including: (a) a lower absorbent end for absorbing cleaning liquid upwardly from the supply of cleaning liquid; and (b) an upper end for spreading cleaning liquid onto the armrest belt conveyer during use of the escalator.
Claim 3
Dependent Claim
26 words
The apparatus of claim 1, further comprising a scraping device for scraping excess cleaning liquid from the conveyer, said scraping device being located within said container.
Claim 4
Dependent Claim
41 words
The apparatus of claim 2, wherein said scraping device and said container are arranged such that the excess cleaning liquid falls by gravity into the supply of cleaning liquid to be reabsorbed by said lower absorbent end of said spreading device.
Claim 5
Dependent Claim
26 words
The apparatus of claim 3, further comprising a wiping device for wiping cleaning liquid from the conveyer, said wiping device being located above said scraping device.
Claim 6
Dependent Claim
23 words
The apparatus of claim 4, wherein said container includes side walls which surround said spreading device, said scraping device, and said wiping device.
Claim 7
Dependent Claim
52 words
The apparatus of claim 5, wherein said side walls include a short wall, a tall wall, and two arched side walls connecting said short and tall walls, said side walls being dimensioned so as to fit against the lower front end of the escalator without interfering with the use of the escalator.
Claim 8
Dependent Claim
27 words
The apparatus of claim 6, wherein said container includes a bottom wall for supporting said container on the floor at the lower front end of the escalator.
Claim 9
Dependent Claim
128 words
A cleaning system, comprising: an escalator with an armrest belt conveyor, said armrest belt conveyor having a lower front end; and an apparatus for cleaning said armrest belt conveyor of said escalator, said apparatus including: (A) a container for containing a supply of cleaning liquid, said container being dimensioned so as to fit beneath said armrest belt conveyor of said escalator at said lower front end of said armrest belt conveyor so as not to interfere with use of said escalator; and (B) a spreading device located within said container, said spreading device including: (a) a lower absorbent end for absorbing cleaning liquid upwardly from the supply of cleaning liquid; (b) an upper end for spreading cleaning liquid onto said armrest belt conveyor during use of said escalator.
Claim 10
Dependent Claim
128 words
A cleaning system, comprising: an escalator with an armrest belt conveyor, said armrest belt conveyor having a lower front end; and an apparatus for cleaning said armrest belt conveyor of said escalator, said apparatus including: (A) a container for containing a supply of cleaning liquid, said container being dimensioned so as to fit beneath said armrest belt conveyor of said escalator at said lower front end of said armrest belt conveyor so as not to interfere with use of said escalator; and (B) a spreading device located within said container, said spreading device including: (a) a lower absorbent end for absorbing cleaning liquid upwardly from the supply of cleaning liquid; (b) an upper end for spreading cleaning liquid onto said armrest belt conveyor during use of said escalator.
Claim 11
Dependent Claim
28 words
The system of claim 8, wherein said apparatus includes a scraping device for scraping excess cleaning liquid from said conveyor, said scraping device being located within said container.
Claim 12
Dependent Claim
41 words
The system of claim 9, wherein said scraping device and said container are arranged such that the excess cleaning liquid falls by gravity into the supply of cleaning liquid to be reabsorbed by said lower absorbent end of said spreading device.
Claim 13
Dependent Claim
28 words
The system of claim 10, wherein said apparatus includes a wiping device for wiping cleaning liquid from said conveyer, said wiping device being located above said scraping device.
Claim 14
Dependent Claim
23 words
The system of claim 11, wherein said container includes side walls which surround said spreading device, said scraping device, and said wiping device.
Claim 15
Dependent Claim
46 words
The system of claim 12, wherein said side walls include a short wall, a tall wall, and two arched side walls connecting said short and tall walls, said side walls fitting against said lower front end of said escalator without interfering with use of said escalator.
Claim 16
Dependent Claim
27 words
The system of claim 13, wherein said container includes a bottom wall for supporting said container on the floor at said lower front end of said escalator.
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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) | 1993-06-18 | 1993-12-18 | 1994-06-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-06-18 | 1997-12-18 | 1998-06-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-06-18 | 2001-12-18 | 2002-06-19 | $7700.00 | Window Closed / Lapsed |