US4345997A
Expired / Lapsed
US
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Media
Assignee: Crane Co
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Filing: 1981-03-09
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Granted: 1982-08-24
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Expires: 2001-03-09
Abstract
Abstract A contactor media for removing waste from water comprising at least two mated discs. Each disc having parallel raised ribs separated by parallel inverted ribs in an alternating rib-inverted rib pattern. Every rib and inverted rib has a series of uniformly spaced apart recesses with the recesses of the ribs located on the side of the disc opposite the recesses of the inverted ribs. The mated discs have the recesses of the inverted ribs of one disc interfitted with the recesses of the ribs of the other disc, and the two mated discs form crossing chordal channels for the flow of waste water therein and the deposit of waste on the surfaces thereof.
Inventors
- 👤 William K. McConnell, Jr.
- 👤 Charles M. Campbell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 08:12
CPC Classifications
C; C02; C02F; C02F3/00; C02F3/02; C02F3/08; C02F3/082; C02F3/10; C02F3/101; Y; Y02; Y02W; Y02W10/00; Y02W10/10
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
126 words
A contactor media for removing waste from water comprising: at least two mated discs, each disc having parallel raised ribs separated by parallel inverted ribs in an alternating pattern; each rib having a top surface with a series of uniformly spaced apart recesses therein; and, each inverted rib having a series of uniformly spaced apart recesses therein on the side of said disc opposite the top surface, whereby two mated discs have the recesses of the inverted ribs of one disc interfitting with the recesses of the ribs of the other disc, and whereby the two mated discs form crossing chordal channels which provide for the flow of waste water therein and the growth of microorganisms on the surfaces thereof and enhance the transfer of oxygen.
Claim 2
Dependent Claim
126 words
A contactor media for removing waste from water comprising: at least two mated discs, each disc having parallel raised ribs separated by parallel inverted ribs in an alternating pattern; each rib having a top surface with a series of uniformly spaced apart recesses therein; and, each inverted rib having a series of uniformly spaced apart recesses therein on the side of said disc opposite the top surface, whereby two mated discs have the recesses of the inverted ribs of one disc interfitting with the recesses of the ribs of the other disc, and whereby the two mated discs form crossing chordal channels which provide for the flow of waste water therein and the growth of microorganisms on the surfaces thereof and enhance the transfer of oxygen.
Claim 3
Dependent Claim
55 words
The media of claim 1 with at least three mated discs wherein, the recesses of the inverted ribs of the first disc interfit with the recesses of the ribs of the second disc, and the recesses of the ribs of the first disc interfit with the recesses of the inverted ribs of the third disc.
Claim 4
Dependent Claim
18 words
The media of claim 1 wherein, the recesses of said ribs and said inverted ribs are parallelogram shaped.
Claim 5
Dependent Claim
26 words
The media of claim 3 wherein, the recesses have edges disposed in a generally 60° angle with longitudinal centerline of said ribs and said inverted ribs.
Claim 6
Dependent Claim
149 words
A contactor media for treating wastewater in a tank and rotatably about a shaft in said tank, said media comprising: at least two mated discs, each disc having parallel raised ribs separated by parallel inverted ribs in an alternating rib-inverted rib pattern; means for rotating the matched discs about the shaft; each rib having a top surface with a series of uniformly spaced apart recesses therein; and, each inverted rib having a series of uniformly spaced apart recesses therein on the side of said disc opposite the top surface, whereby two mated discs have the recesses of the inverted ribs of one disc interfitting with the recesses of the ribs of the other disc, and whereby the two mated discs form crossing chordal channels which provide for the flow of waste water therein and the growth of microorganisms on the surfaces thereof as the discs rotate about the shaft.
Claim 7
Dependent Claim
149 words
A contactor media for treating wastewater in a tank and rotatably about a shaft in said tank, said media comprising: at least two mated discs, each disc having parallel raised ribs separated by parallel inverted ribs in an alternating rib-inverted rib pattern; means for rotating the matched discs about the shaft; each rib having a top surface with a series of uniformly spaced apart recesses therein; and, each inverted rib having a series of uniformly spaced apart recesses therein on the side of said disc opposite the top surface, whereby two mated discs have the recesses of the inverted ribs of one disc interfitting with the recesses of the ribs of the other disc, and whereby the two mated discs form crossing chordal channels which provide for the flow of waste water therein and the growth of microorganisms on the surfaces thereof as the discs rotate about the shaft.
Claim 8
Dependent Claim
55 words
The media of claim 5 with at least three mated discs wherein, the recesses of the inverted ribs of the first disc interfit with the recesses of the ribs of the second disc, and the recesses of the ribs of the first disc interfit with the recesses of the inverted ribs of the third disc.
Claim 9
Dependent Claim
18 words
The media of claim 5 wherein, the recesses of said ribs and said inverted ribs are parallelogram shaped.
Claim 10
Dependent Claim
26 words
The media of claim 7 wherein, the recesses have edges disposed in a generally 60° angle with longitudinal centerline of said ribs and said inverted ribs.
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) | 1985-08-23 | 1986-02-22 | 1986-08-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-08-23 | 1990-02-22 | 1990-08-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-08-23 | 1994-02-22 | 1994-08-24 | $7700.00 | Window Closed / Lapsed |