US3946853A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Escalator belt cleaner
Assignee: Individual
•
Filing: 1974-05-15
•
Granted: 1976-03-30
•
Expires: 1994-05-15
Abstract
Abstract A C-shaped resilient housing for encompassing at least three sides of an escalator belt and biasing a solution bearing pad into continuous abutment with the escalator belt. Ribs interior to the housing and flanges exterior to the rear of the housing may be included to hold the pad in place.
Inventors
- 👤 Koji Ishida
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 16:46
CPC Classifications
B; B66; B66B; B66B31/00; B66B31/02
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
125 words
In combination, a moving escalator belt having a top, bottom and two sides and a device for cleaning said moving escalator belt, said device comprising: means for cleansing and abutting said top and two sides of said belt, said cleansing means being generally U-shaped and including a first layer of cleansing agent impregnated material for abutting said belt and a second layer of resilient material for biasing said first layer into abutment with said belt; and means engaging said cleansing means and having a generally C-shaped resilient housing, which encompasses more than said top and two sides of said belt for securing said cleansing means to said belt and biasing said cleansing means into continuous abutment with said top and two sides of said belt.
Claim 2
Dependent Claim
125 words
In combination, a moving escalator belt having a top, bottom and two sides and a device for cleaning said moving escalator belt, said device comprising: means for cleansing and abutting said top and two sides of said belt, said cleansing means being generally U-shaped and including a first layer of cleansing agent impregnated material for abutting said belt and a second layer of resilient material for biasing said first layer into abutment with said belt; and means engaging said cleansing means and having a generally C-shaped resilient housing, which encompasses more than said top and two sides of said belt for securing said cleansing means to said belt and biasing said cleansing means into continuous abutment with said top and two sides of said belt.
Claim 3
Dependent Claim
40 words
A device as in claim 1 wherein said housing has an inside width less than the sum of the width of said top of said belt and twice the thickness of said cleansing means so as to effect said biasing.
Claim 4
Dependent Claim
38 words
A device as in claim 1 wherein said housing includes at least one flange at a rear edge of said housing for engaging said cleansing means and preventing said cleansing means from lateral movement relative to said housing.
Claim 5
Dependent Claim
29 words
A device as in claim 3 wherein said cleansing means being generally U-shaped and said flange engage a substantial portion of an edge of the bight of said U.
Claim 6
Dependent Claim
35 words
A device as in claim 3 wherein said cleansing means being generally U-shaped and said housing includes at least two flanges each for engaging a portion of an edge of a leg of said U.
Claim 7
Dependent Claim
32 words
A device as in claim 1 wherein said housing includes a pair of ribs interior to and spaced from the ends of said C for engaging an edge of said cleansing means.
Claim 8
Dependent Claim
42 words
A device as in claim 1 wherein said housing includes a plate interior to said C and parallel to said top of said belt for engaging and maintaining a portion of said cleansing means in abutment with said top of said belt.
Claim 9
Dependent Claim
33 words
A device as in claim 1 wherein said housing includes struts interior to said C for engaging and maintaining a portion of said cleansing means in abutment with said top of said belt.
Claim 10
Dependent Claim
42 words
A device as in claim 1 wherein said cleansing means further comprises a generally third layer having said first and second layers secured thereto, said third layer being of a material capable of providing a degree of rigidity to said cleansing means.
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) | 1979-03-30 | 1979-09-29 | 1980-03-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-03-30 | 1983-09-29 | 1984-03-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-03-30 | 1987-09-29 | 1988-03-30 | $7700.00 | Window Closed / Lapsed |