Patent US823357A successfully refreshed from Google Patents.
US3869749A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cleaning apparatus
Assignee: Individual
•
Filing: 1972-06-12
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Granted: 1975-03-11
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Expires: 1992-06-12
Abstract
Abstract An escalator cleaning apparatus comprising a carriage, a frame reciprocably mounted on the carriage and brush means mounted on the frame. Means are provided on the carriage for fixedly positioning the carriage with respect to a pair of escalator sidewalls. Vacuum means pick up dirt which is dislodged by the brush means and spray means provide spraying a liquid onto the area which is contacted by the brush means. An additional frame positioned on the carriage for reciprocation in a longitudinal direction carries a second brush means. A control means controls the forward and rearward movement of the second frame with respect to an upwardly moving escalator step surface. A control circuit operates the above apparatus in an automatic manner to vacuum, vacuum and brush, and then spray and brush.
Inventors
- 👤 Arnold B London
- 👤 Jiri Nessel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 02:48
CPC Classifications
B; B66; B66B; B66B31/00; B66B31/003; A; A47; A47L; A47L11/00; A47L11/29; A47L11/30; A47L11/302; B08; B08B; B08B1/00; B08B1/30; B08B1/32; B08B1/34; B08B3/00; B08B3/02; B08B3/024
Claims Analysis
Total Claims: 39
Claim 1
Independent Claim
116 words
An escalator cleaning apparatus comprising a carriage; means to fixedly position said carriage between a pair of escalator sidewalls; wheels mounted on the underside of said carriage; a reciprocable first frame positioned on said carriage for reciprocation in a transverse direction; first brush means carried by said reciprocable first frame; a reciprocable second frame positioned with respect to said carriage for reciprocation in a longitudinal direction; second brush means carried by said second frame; and said second frame extending forwardly of said first frame, whereby said first brush means is reciprocated in a transverse direction to an escalator step surface and said second brush means is reciprocated in a longitudinal direction to an escalator step surface.
Claim 2
Dependent Claim
116 words
An escalator cleaning apparatus comprising a carriage; means to fixedly position said carriage between a pair of escalator sidewalls; wheels mounted on the underside of said carriage; a reciprocable first frame positioned on said carriage for reciprocation in a transverse direction; first brush means carried by said reciprocable first frame; a reciprocable second frame positioned with respect to said carriage for reciprocation in a longitudinal direction; second brush means carried by said second frame; and said second frame extending forwardly of said first frame, whereby said first brush means is reciprocated in a transverse direction to an escalator step surface and said second brush means is reciprocated in a longitudinal direction to an escalator step surface.
Claim 3
Dependent Claim
116 words
An escalator cleaning apparatus comprising a carriage; means to fixedly position said carriage between a pair of escalator sidewalls; wheels mounted on the underside of said carriage; a reciprocable first frame positioned on said carriage for reciprocation in a transverse direction; first brush means carried by said reciprocable first frame; a reciprocable second frame positioned with respect to said carriage for reciprocation in a longitudinal direction; second brush means carried by said second frame; and said second frame extending forwardly of said first frame, whereby said first brush means is reciprocated in a transverse direction to an escalator step surface and said second brush means is reciprocated in a longitudinal direction to an escalator step surface.
Claim 4
Dependent Claim
116 words
An escalator cleaning apparatus comprising a carriage; means to fixedly position said carriage between a pair of escalator sidewalls; wheels mounted on the underside of said carriage; a reciprocable first frame positioned on said carriage for reciprocation in a transverse direction; first brush means carried by said reciprocable first frame; a reciprocable second frame positioned with respect to said carriage for reciprocation in a longitudinal direction; second brush means carried by said second frame; and said second frame extending forwardly of said first frame, whereby said first brush means is reciprocated in a transverse direction to an escalator step surface and said second brush means is reciprocated in a longitudinal direction to an escalator step surface.
Claim 5
Dependent Claim
36 words
The apparatus of claim 1 including vacuum means positioned between said first and second brush means; said first and second brush means each including a rotatable brush whose direction of rotation is toward said vacuum means.
Claim 6
Dependent Claim
64 words
An escalator cleaning apparatus including a forwardly and rearwardly reciprocable brush means; means to support said brush means for reciprocatory movement, and control means to move said brush means forwardly at a predetermined speed over an upwardly moving escalator step surface and to retract said brush means rearwardly at a higher predetermined speed when the height of the step surface reaches a predetermined level.
Claim 7
Dependent Claim
64 words
An escalator cleaning apparatus including a forwardly and rearwardly reciprocable brush means; means to support said brush means for reciprocatory movement, and control means to move said brush means forwardly at a predetermined speed over an upwardly moving escalator step surface and to retract said brush means rearwardly at a higher predetermined speed when the height of the step surface reaches a predetermined level.
Claim 8
Dependent Claim
25 words
The apparatus of claim 3 including means to reciprocate said brush means from side to side as said brush means is reciprocated forwardly and rearwardly.
Claim 9
Dependent Claim
22 words
The apparatus of claim 3 including spray means positioned adjacent said brush means to spray a liquid onto the escalator step surface.
Claim 10
Dependent Claim
30 words
The apparatus of claim 3 wherein said brush means includes a rotatable brush; and including means to rotate said brush during movement of said brush over an escalator step surface.
Claim 11
Dependent Claim
31 words
The apparatus of claim 6 wherein said brush is positioned to contact an upwardly moving escalator step surface and a riser surface positioned forwardly thereof during reciprocatory movement of said brush.
Claim 12
Dependent Claim
26 words
The apparatus of claim 7 wherein said predetermined forward speed brings said brush into firm contact with the riser surface prior the retraction of said brush.
Claim 13
Dependent Claim
30 words
The apparatus of claim 3 including second brush means positioned rearwardly of said brush means, and said second brush means being reciprocable from side to side in a transverse direction.
Claim 14
Dependent Claim
69 words
A cleaning apparatus comprising a carriage having a pair of forward wheels mounted on either side of said carriage; an axle interconnecting said forward wheels; a frame slidably supported at its forward end for transverse movement on said axle; vertically adjustable support means supporting the rearward end of said frame; brush means carried on said frame; and means to reciprocate said frame in a direction transverse to said carriage.
Claim 15
Dependent Claim
69 words
A cleaning apparatus comprising a carriage having a pair of forward wheels mounted on either side of said carriage; an axle interconnecting said forward wheels; a frame slidably supported at its forward end for transverse movement on said axle; vertically adjustable support means supporting the rearward end of said frame; brush means carried on said frame; and means to reciprocate said frame in a direction transverse to said carriage.
Claim 16
Dependent Claim
58 words
The apparatus of claim 10 wherein said brush means is positioned on said frame forwardly of said axle, whereby upward movement of said support means pivots said frame forwardly about said axle to move said brush means downwardly and downward movement of said support means pivots said frame rearwardly about said axle to move said brush means upwardly.
Claim 17
Dependent Claim
31 words
The cleaning apparatus of claim 10 including a second frame reciprocably mounted on said first mentioned frame for forward and rearward reciprocation, and second brush means carried by said second frame.
Claim 18
Dependent Claim
78 words
An escalaTor cleaning apparatus comprising a carriage; a frame reciprocably mounted on said carriage; brush means mounted on said frame for contact with an escalator surface; and means to reciprocate said frame from side to side when said carriage is fixed with respect to a pair of escalator sidewalls, whereby said brush means is reciprocated across the width of an escalator step to clean in the areas on the step surface which are adjacent to the escalator sidewalls.
Claim 19
Dependent Claim
78 words
An escalaTor cleaning apparatus comprising a carriage; a frame reciprocably mounted on said carriage; brush means mounted on said frame for contact with an escalator surface; and means to reciprocate said frame from side to side when said carriage is fixed with respect to a pair of escalator sidewalls, whereby said brush means is reciprocated across the width of an escalator step to clean in the areas on the step surface which are adjacent to the escalator sidewalls.
Claim 20
Dependent Claim
22 words
The apparatus of claim 13 including vacuum means positioned adjacent said brush means to pick up dirt dislodged by said brush means.
Claim 21
Dependent Claim
39 words
The apparatus of claim 14 including spray means positioned adjacent to said brush means for spraying a liquid onto the area contacted by said brush means, and said vacuum means positioned to pick up liquid from said brush means.
Claim 22
Dependent Claim
27 words
The apparatus of claim 14 including filter means positioned in flow communication with said vacuum means to remove dirt in the air passing through said vacuum means.
Claim 23
Dependent Claim
26 words
The apparatus of claim 13 including spray means positioned adjacent to said brush means for spraying a liquid onto the area contacted by said brush means.
Claim 24
Dependent Claim
51 words
The apparatus of claim 1 including spray means positioned adjacent to said first brush means, and spray means positioned adjacent to said second brush means, whereby liquid is sprayed onto an escalator step surface contacted by said first brush means and onto a riser surface contacted by said second brush means.
Claim 25
Dependent Claim
35 words
The apparatus of claim 18 including vacuum means positioned adjacent to said first and second brush means to receive dirt dislodged by said first and second brush means and liquid discharged by said spray means.
Claim 26
Dependent Claim
40 words
The apparatus of claim 13 including extensible means on said carriage which are movable in a transverse direction with respect to said carriage into contact with a pair of fixed escalator sidewalls to fixedly position the carriage between said sidewalls.
Claim 27
Dependent Claim
31 words
The apparatus of claim 20 including a second brush means, and means on said apparatus to position said second brush means for contact with a riser surface of an escalator step.
Claim 28
Dependent Claim
30 words
The apparatus of claim 21 including means associated with the second brush means to provide movement of the second brush means in cleaning the riser surfaces of moving escalator steps.
Claim 29
Dependent Claim
140 words
An escalator cleaning apparatus comprising: a carriage; a brush reciprocably mounted with respect to said carriage; extensible means on said carriage for fixing the position of said carriage between a pair of fixed escalator sidewalls; said extensible means being extendible in a transverse direction with respect to said carriage to contact an escalator sidewall in fixing the position of the carriage between said sidewalls; said extensible means being retractable in a transverse direction to move out of contact with said sidewall in releasing said carriage with respect to said sidewalls, and means to reciprocate said brush from side to side when said carriage is fixed with respect to the escalator sidewalls, whereby said brush means is reciprocated across the width of an escalator step to clean in the areas on the step surface which are adjacent to the escalator sidewalls.
Claim 30
Dependent Claim
140 words
An escalator cleaning apparatus comprising: a carriage; a brush reciprocably mounted with respect to said carriage; extensible means on said carriage for fixing the position of said carriage between a pair of fixed escalator sidewalls; said extensible means being extendible in a transverse direction with respect to said carriage to contact an escalator sidewall in fixing the position of the carriage between said sidewalls; said extensible means being retractable in a transverse direction to move out of contact with said sidewall in releasing said carriage with respect to said sidewalls, and means to reciprocate said brush from side to side when said carriage is fixed with respect to the escalator sidewalls, whereby said brush means is reciprocated across the width of an escalator step to clean in the areas on the step surface which are adjacent to the escalator sidewalls.
Claim 31
Dependent Claim
20 words
The apparatus of claim 23 wherein said brush means includes a rotatable brush positioned transversely with respect to said carriage.
Claim 32
Dependent Claim
18 words
The apparatus of claim 13 wherein said brush means includes a rotatable brush positioned transversely to said frame.
Claim 33
Dependent Claim
70 words
The apparatus of claim 25 including spray means positioned on one side of said rotatable brush for spraying liquid onto the area contacted by said brush; vacuum means positioned on the other side of said rotatable brush to pick up liquid from said brush and said brush rotated in a direction from said spray means toward said vacuum means to carry liquid from saId spray means to said vacuum means.
Claim 34
Dependent Claim
134 words
A cleaning apparatus comprising: a wheeled carriage; a frame reciprocably mounted on said carriage; brush means mounted on said frame to contact a surface being cleaned; a liquid tank mounted on said carriage; vacuum means mounted on said carriage; a vacuum pick-up positioned on said carriage adjacent the area being cleaned to pick up dirt dislodged by said brush means; a filter positioned in flow communication with said vacuum pick-up between said vacuum pick-up and said tank; said vacuum means in flow communication with said tank to draw a vacuum within said tank and said tank in flow communication with said vacuum pick-up such that the vacuum drawn in said tank is communicated to said pick-up and the air received by said pick-up passes through liquid in said tank before entering said vacuum means.
Claim 35
Dependent Claim
134 words
A cleaning apparatus comprising: a wheeled carriage; a frame reciprocably mounted on said carriage; brush means mounted on said frame to contact a surface being cleaned; a liquid tank mounted on said carriage; vacuum means mounted on said carriage; a vacuum pick-up positioned on said carriage adjacent the area being cleaned to pick up dirt dislodged by said brush means; a filter positioned in flow communication with said vacuum pick-up between said vacuum pick-up and said tank; said vacuum means in flow communication with said tank to draw a vacuum within said tank and said tank in flow communication with said vacuum pick-up such that the vacuum drawn in said tank is communicated to said pick-up and the air received by said pick-up passes through liquid in said tank before entering said vacuum means.
Claim 36
Dependent Claim
30 words
The apparatus of claim 27 including spray means positioned on said carriage adjacent to said brush means, and pump means to convey liquid from said tank to said spray means.
Claim 37
Dependent Claim
18 words
The apparatus of claim 27 wherein said brush means is reciprocable in a direction transverse to said carriage.
Claim 38
Dependent Claim
88 words
The apparatus of claim 27 including valve means positioned in flow communication with said vacuum pickup between said vacuum pickup and said filter; said valve means having a first position which communicates said pickup with said filter and a second position which communicates said pickup directly with said tank and bypasses said filter, whereby air flowing through said vacuum pickup flows to said filter when said valve means is in its first position and flows directly to said tank when said valve means is in its second position.
Claim 39
Dependent Claim
56 words
The apparatus of claim 30 including spray means positioned on said carriage adjacent to said brush means; pump means to convey liquid from said tank to said spray means; and said valve means being in its second position during operation of said spray means to return liquid passing through said vacuum pickup directly to said tank.
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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) | 1978-03-10 | 1978-09-09 | 1979-03-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-10 | 1982-09-09 | 1983-03-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-10 | 1986-09-09 | 1987-03-11 | $7700.00 | Window Closed / Lapsed |