US3848804A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Surface cleaning
Assignee: WARWICK PUMP AND ENG CO Ltd
•
Filing: 1972-11-21
•
Granted: 1974-11-19
•
Expires: 1992-11-21
Abstract
Abstract Device for cleaning a surface wherein water is directed from nozzles which are in continuous motion substantially transverse to the general direction of advance along said surface.
Inventors
- 👤 J Prestwich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 05:49
CPC Classifications
E; E01; E01H; E01H1/00; E01H1/10; E01H1/101; E01H1/103
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
101 words
A device for cleaning a surface which comprises: at least one nozzle carried by said device for directing water downwardly onto the surface; means for imparting motion to the said or one of said nozzles relative to the device to continuously move the said or one of said nozzles substantially transverse to a general direction of advance of the device; means for directing water through the said or one of said nozzles during a normal cleaning operation when the said or one of said nozzles is in said continuous movement substantially transverse to the general direction of advance of the device.
Claim 2
Independent Claim
101 words
A device for cleaning a surface which comprises: at least one nozzle carried by said device for directing water downwardly onto the surface; means for imparting motion to the said or one of said nozzles relative to the device to continuously move the said or one of said nozzles substantially transverse to a general direction of advance of the device; means for directing water through the said or one of said nozzles during a normal cleaning operation when the said or one of said nozzles is in said continuous movement substantially transverse to the general direction of advance of the device.
Claim 3
Dependent Claim
33 words
The device of claim 1 wherein the said or one of said nozzles move along an arcuate path when performing said continuous movement substantially transverse to said path of advance of the device.
Claim 4
Dependent Claim
20 words
The device of claim 2 wherein the said or one of said nozzles is continuously movable around a circular path.
Claim 5
Dependent Claim
48 words
The device of claim 3 further comprising a plurality of movable arms spaced relative to each other, one end of each of said movable arms being attached to a hub and another end of each of said movable arms being attached to at least one of said nozzles.
Claim 6
Dependent Claim
18 words
The device of claim 4 wherein said movable arms lie in a common plane and are equi-angularly spaced.
Claim 7
Dependent Claim
18 words
The device of claim 1 further comprising means for collecting said water and contaminant mixed in the water.
Claim 8
Dependent Claim
30 words
The device of claim 6 wherein the collecting means comprises a trough which is C-shaped in sectional side elevation, and a flap fixed along a lower edge of the trough.
Claim 9
Dependent Claim
56 words
The device of claim 7 wherein said trough is arcuate in plan view and is disposed adjacent a path of the said or one of said nozzles when performing said continuous movement so that water is deflected from said flap into the trough and moves in a spiral path towards a first end of the trough.
Claim 10
Dependent Claim
26 words
The device of claim 8 wherein the trough is closed at a second end, an outlet pipe being disposed at said first end of the trough.
Claim 11
Dependent Claim
24 words
The device of claim 9 further comprising separating means for separating said contaminant from said water, said outlet pipe communicating with said separating means.
Claim 12
Dependent Claim
20 words
The device of claim 10 further comprising means for recirculating said water to the said or one of said nozzles.
Claim 13
Dependent Claim
22 words
The device of claim 10 Wherein the separating means comprises a well member in which said contaminant collects and a water filter.
Claim 14
Dependent Claim
33 words
The device of claim 12 further comprising a vacuum pump for assisting the removal of contaminated water from the trough by forming a partial vacuum within said well member and said outlet pipe.
Claim 15
Dependent Claim
21 words
The device of claim 1 further comprising a water heater for heating said water before the water passes to the nozzles.
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) | 1977-11-18 | 1978-05-20 | 1978-11-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-11-18 | 1982-05-20 | 1982-11-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-11-18 | 1986-05-20 | 1986-11-19 | $7700.00 | Window Closed / Lapsed |