Patent US3882566A successfully refreshed from Google Patents.
US3882566A
Expired / Lapsed
US
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Duct cleaning device
Assignee: Sauerman Bros Inc
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Filing: 1974-04-24
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Granted: 1975-05-13
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Expires: 1994-04-24
Abstract
Abstract A device for cleaning out a duct, such as a culvert, sewer, or drain line, having an access opening. The cleanout device includes a plurality of portions preselected to be passed through the access opening and connecting structure adapted to secure the portions of the device together within the duct. The assembled device may have a transverse dimension substantially larger than the corresponding transverse dimension of the access opening which may be substantially smaller than that of the duct. The device is utilized to clean the duct by a movement along the bottom portion of the duct effected by dragging the device therealong by suitable dragline. A series of such cleaning operations may be effected by sequentially returning the device to an original cleaning position by means of a return dragline. Upon completion of the cleanout operation, the device may be disassembled and removed through the small access opening.
Inventors
- 👤 Clifton H Hubbell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:05
CPC Classifications
B; B08; B08B; B08B9/00; B08B9/02; B08B9/027; B08B9/04; B08B9/043; B08B9/0436
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
171 words
A device for cleaning out a duct having means for providing access thereto defining an opening having a cross section smaller than that of the duct, said device being utilized to clean the duct by being dragged along the bottom of the duct by a drawn dragline so as to drag material collected in the duct to a removal position, said device comprising: first wall means having a size preselected to permit passage thereof through said access opening into and from said duct; second wall means having a size preselected to permit passage thereof through said access opening into and from said duct; means for removably securing said first and second wall means together inwardly of said access opening to define an extended wall arrangement having a cross section larger than that of said recess opening and being preselected to be movable along the bottom portion of the duct for cleaning the duct; and connecting means on said wall means for connecting a dragline thereto to effect such duct cleaning movement.
Claim 2
Independent Claim
171 words
A device for cleaning out a duct having means for providing access thereto defining an opening having a cross section smaller than that of the duct, said device being utilized to clean the duct by being dragged along the bottom of the duct by a drawn dragline so as to drag material collected in the duct to a removal position, said device comprising: first wall means having a size preselected to permit passage thereof through said access opening into and from said duct; second wall means having a size preselected to permit passage thereof through said access opening into and from said duct; means for removably securing said first and second wall means together inwardly of said access opening to define an extended wall arrangement having a cross section larger than that of said recess opening and being preselected to be movable along the bottom portion of the duct for cleaning the duct; and connecting means on said wall means for connecting a dragline thereto to effect such duct cleaning movement.
Claim 3
Dependent Claim
15 words
The duct cleaning device of claim 1 wherein said wall arrangement defines a crescent configuration.
Claim 4
Dependent Claim
55 words
The duct cleaning device of claim 1 wherein second connectIng means are provided on a rear portion of said wall means for connecting a second dragline thereto to effect rearward, retraction movement of the device whereby the device may be caused to make a plurality of passes through the duct in effecting the cleaning operation.
Claim 5
Dependent Claim
27 words
The duct cleaning device of claim 1 wherein said wall configuration defines a fore-and-aft centerline and said securing means secures said wall means together along said centerline.
Claim 6
Dependent Claim
17 words
The duct cleaning device of claim 1 wherein said wall arrangement defines a forwardly opening, concave configuration.
Claim 7
Dependent Claim
48 words
The duct cleaning device of claim 1 wherein said wall arrangement defines a forwardly opening, concave configuration having forwardly extending side portions, said device further including a bail, and means for removably securing the opposite ends of the bail to said side portions inwardly of said access opening.
Claim 8
Dependent Claim
95 words
The duct cleaning device of claim 1 wherein said wall arrangement defines a forwardly opening, concave configuration having forwardly extending side portions, said device further including a bail having a length greater than the maximum cross section dimension of the access opening and a transverse cross section preselected to be smaller than the cross section of said access opening to permit passage of said bail lengthwise through said access opening into and from said duct, and means for removably securing the opposite ends of the bail to said side portions inwardly of said access opening.
Claim 9
Dependent Claim
61 words
The duct cleaning device of claim 1 wherein said wall arrangement defines a forwardly opening, concave configuration having forwardly extending side portions, said device further including a bail, and means for removably securing the opposite ends of the bail to said side portions inwardly of said access opening, said connecting means being carried by said side portions subjacent said bail ends.
Claim 10
Dependent Claim
15 words
The duct cleaning device of claim 1 wherein said securing means comprise threaded securing means.
Claim 11
Dependent Claim
25 words
The duct cleaning device of claim 1 wherein said wall arrangement is arcuate and is preselected to conform generally to an arcuate duct bottom portion.
Claim 12
Dependent Claim
49 words
The duct cleaning device of claim 1 wherein said wall arrangement defines a forwardly opening, concave configuration having forwardly extending side portions, said device further including a bail, and threaded means for removably securing the opposite ends of the bail to said side portions inwardly of said access opening.
References Cited (Backward Citations)
US2682677A
Cited
US3352038A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-05-12 | 1978-11-11 | 1979-05-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-05-12 | 1982-11-11 | 1983-05-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-05-12 | 1986-11-11 | 1987-05-13 | $7700.00 | Window Closed / Lapsed |