Patent US3628728A successfully refreshed from Google Patents.
US3628728A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spraying method and apparatus
Assignee: United States Steel Corp
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Filing: 1970-04-23
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Granted: 1971-12-21
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Expires: 1990-04-23
Abstract
Abstract A method and apparatus for spraying liquid on the slopes of large piles of bulk material, particularly for spraying dustsuppressing liquid on coal piles. Apparatus comprises a vehicle and a spray buggy, which can be carried on the vehicle. Vehicle is positioned at the top of a pile and includes a hoist for moving the buggy down and up the slopes. Buggy includes a hose, hose reel and spray bar with downwardly directed outlets. Hose is connected to tank truck supplying liquid.
Inventors
- 👤 Frank J Polutnik
- 👤 Robert W West
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 10:43
CPC Classifications
E; E21; E21F; E21F5/00; E21F5/02; B; B05; B05B; B05B3/00; B05B3/18
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
136 words
An apparatus for spraying liquid on the slopes of a large pile of bulk material comprising a vehicle and a spray buggy, said vehicle being adapted to carry said buggy; said vehicle including a drive means, a hoist operatively connected with said drive means, and flexible means which winds on said hoist; said buggy including a frame, wheels supporting said frame, a hose reel journaled to said frame, means operatively Connected with said wheels and with said reel for driving the reel from said wheels, a hose which winds on said reel, a spray bar carried by said frame and connected to said hose, and a plurality of downwardly directed outlets on said bar; said flexible means being connected with said buggy, whereby said hoist is operable to lower and raise said buggy along a slope.
Claim 2
Independent Claim
136 words
An apparatus for spraying liquid on the slopes of a large pile of bulk material comprising a vehicle and a spray buggy, said vehicle being adapted to carry said buggy; said vehicle including a drive means, a hoist operatively connected with said drive means, and flexible means which winds on said hoist; said buggy including a frame, wheels supporting said frame, a hose reel journaled to said frame, means operatively Connected with said wheels and with said reel for driving the reel from said wheels, a hose which winds on said reel, a spray bar carried by said frame and connected to said hose, and a plurality of downwardly directed outlets on said bar; said flexible means being connected with said buggy, whereby said hoist is operable to lower and raise said buggy along a slope.
Claim 3
Independent Claim
179 words
An apparatus for spraying liquid on the slopes of a large pile of bulk material comprising a platform trailer and a spray buggy, the platform of said trailer being adapted to carry said buggy; said trailer including a drive means, a hoist operatively connected with said drive means, a boom pivoted to the platform to swing on a horizontal axis between forward and rearward positions, flexible means which winds on said hoist and is connected with said boom to move the boom to its forward position when said buggy is on the platform, and means connected to said boom to swing it to its rearward position when said buggy leaves the platform; said buggy including a frame, wheels supporting said frame, a hose reel journaled to said frame, a hose which winds on said reel, a spray bar carried by said frame and connected to said hose, and a plurality of downwardly directed outlets on said bar; said flexible means being connected to said buggy, whereby, said hoist is operable to lower and raise said buggy along a slope.
Claim 4
Independent Claim
179 words
An apparatus for spraying liquid on the slopes of a large pile of bulk material comprising a platform trailer and a spray buggy, the platform of said trailer being adapted to carry said buggy; said trailer including a drive means, a hoist operatively connected with said drive means, a boom pivoted to the platform to swing on a horizontal axis between forward and rearward positions, flexible means which winds on said hoist and is connected with said boom to move the boom to its forward position when said buggy is on the platform, and means connected to said boom to swing it to its rearward position when said buggy leaves the platform; said buggy including a frame, wheels supporting said frame, a hose reel journaled to said frame, a hose which winds on said reel, a spray bar carried by said frame and connected to said hose, and a plurality of downwardly directed outlets on said bar; said flexible means being connected to said buggy, whereby, said hoist is operable to lower and raise said buggy along a slope.
Claim 5
Dependent Claim
28 words
An apparatus as defined in claim 2 in which said boom and the frame of said buggy carry cooperable coupling means for retaining said buggy on said trailer.
Claim 6
Dependent Claim
25 words
An apparatus as defined in claim 2 in which said trailer includes shock absorbers engaged by said boom when it swings to its forward position.
Claim 7
Dependent Claim
38 words
An apparatus as defined in claim 1 in which the means for driving said reel includes a cam clutch which disengages automatically as the buggy runs down a slope, whereby the reel is freewheeling as it goes down.
References Cited (Backward Citations)
US184956A
Cited
US979382A
Cited
US1101936A
Cited
US2306231A
Cited
US2483762A
Cited
US2571361A
Cited
US2801132A
Cited
US3103288A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-12-20 | 1975-06-21 | 1975-12-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-12-20 | 1979-06-21 | 1979-12-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-12-20 | 1983-06-21 | 1983-12-21 | $7700.00 | Window Closed / Lapsed |