Patent US3777891A successfully refreshed from Google Patents.
US3777891A
Expired / Lapsed
US
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Trickling filter plant
Assignee: Individual
•
Filing: 1971-05-18
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Granted: 1973-12-11
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Expires: 1991-05-18
Abstract
Abstract A trickling filter plant consisting of several circular plates immersed into a tank to about half their diametric height and mounted on a drive shaft; the individual plate is thereby composed of several sectors fastened to radial struts secured to the drive shaft and combined into stacks by bolts extending through reinforced spacer cams provided on the sectors.
Inventors
- 👤 J Stengelin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 11:10
CPC Classifications
C; C02; C02F; C02F3/00; C02F3/02; C02F3/08; C02F3/082; Y; Y02; Y02W; Y02W10/00; Y02W10/10
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
91 words
A trickling filter plant for use in a waste water purification immersion tank comprising a plurality of circular plates, each plate including a plurality of sector elements, said plates being separated from one another by spacer cam means, and being combined into plate packs by means extending through said cam means, a drivable shaft means for supporting said plurality of plates in the tank to a depth of approximately half the diameter of said plates, and a plurality of strut means radially secured to said shaft for supporting said sector elements.
Claim 2
Dependent Claim
91 words
A trickling filter plant for use in a waste water purification immersion tank comprising a plurality of circular plates, each plate including a plurality of sector elements, said plates being separated from one another by spacer cam means, and being combined into plate packs by means extending through said cam means, a drivable shaft means for supporting said plurality of plates in the tank to a depth of approximately half the diameter of said plates, and a plurality of strut means radially secured to said shaft for supporting said sector elements.
Claim 3
Dependent Claim
23 words
A trickling filter plant according to claim 1, characterized in that said cam means are integral with a respective plate and are reinforce.
Claim 4
Dependent Claim
20 words
A trickling plant according to claim 1, characterized in that said plurality of plates are constituted of a synthetic resin.
Claim 5
Dependent Claim
62 words
A trickling filter plant according to claim 3, characterized in that reinforcing spacer sleeve means of a different synthetic resin having a higher strength than that of said plates, are foamed-in into the spacer cam means, and in that said means are bolts extending at least partially through the sleeve means and nuts are threadedly connected to the ends of the bolts.
Claim 6
Dependent Claim
33 words
A trickling filter plant according to claim 4, characterized in that the spacer sleeve means include flange means at their ends, which are flush with the outer surfaces of the spacer cam means.
Claim 7
Dependent Claim
39 words
A trickling filter plant according to claim 5, characterized in that at least several of the plurality of plate sector elements are disposed one behind the other in the axial direction of the shaft forming a plate sector pack.
Claim 8
Dependent Claim
56 words
A trickling filter plant according to claim 6, characterized in that the plate sector packs include angle iron means extending in each case along the sector edges, adjacent angle iron means of adjacent plate sector packs extending along a radial strut means secured to the shaft and threadEdly connected to the end of the strut means.
Claim 9
Dependent Claim
35 words
A trickling filter plant according to claim 7, characterized in that the ends of at least one side of the angle iron means of one plate pack are connected with each other by anchoring means.
Claim 10
Dependent Claim
57 words
A trickling filter plant according to claim 7, characterized in that the strut means are constructed with a cross-section of a cross-like shape, and in that the angle iron means extending along the sector edges are threadedly connected to flanges of the profile of the strut means, said flanges extending in the axial direction of the shaft.
Claim 11
Dependent Claim
56 words
A trickling filter plant according to claim 7, characterized in that the strut means are constructed with a cross-section of a T-shape, and in that the angle iron means extending along the sector edges are threadedly connected to flanges of the profile of the strut means, said flanges extending in the axial direction of the shaft.
Claim 12
Dependent Claim
56 words
A trickling filter plant according to claim 7, characterized in that the strut means are constructed with a cross-section of an I-shape, and in that the angle iron means extending along the sector edges are threadedly connected to flanges of the profile of the strut means, said flanges extending in the axial direction of the shaft.
Claim 13
Dependent Claim
56 words
A trickling filter plant according to claim 7, characterized in that the strut means are constructed with a cross-section of a U-shape, and in that the angle iron means extending along the sector edges are threadedly connected to flanges of the profile of the strut means, said flanges extending in the axial direction of the shaft.
Claim 14
Dependent Claim
57 words
A trickling filter plant according to claim 7, characterized in that the strut means are constructed with a cross-section of a flat-iron shape, and in that the angle iron means extending along the sector edges are threadedly connected to flanges of the profile of the strut means, said flanges extending in the axial direction of the shaft.
Claim 15
Dependent Claim
39 words
A trickling filter plant according to claim 1, characterized in that at least several of the plurality of plate sector elements are disposed one behind the other in the axial direction of the shaft forming a plate sector pack.
Claim 16
Dependent Claim
56 words
A trickling filter plant according to claim 14, characterized in that the plate sector packs include angle iron means extending in each case along the sector edges, adjacent angle iron means of adjacent plate sector packs extending along a radial strut means secured to the shaft and threadedly connected to the end of the strut means.
Claim 17
Dependent Claim
35 words
A trickling filter plant according to claim 15, characterized in that the ends of at least one side of the angle iron means of one plate pack are connected with each other by anchoring means.
Claim 18
Dependent Claim
57 words
A trickling filter plant according to claim 15, characterized in that the strut means are constructed with a cross-section of a cross-like shape, and in that the angle iron means extending along the sector edges are threadedly connected to flanges of the profile of the strut means, said flanges extending in the axial direction of the shaft.
Claim 19
Dependent Claim
56 words
A trickling filter plant according to claim 15, characterized in that the strut means are constructed with a cross-section of a T-shape, and in that the angle iron means extending along the sector edges are threadedly connected to flanges of the profile of the strut means, said flanges extending in the axial direction of the shaft.
Claim 20
Dependent Claim
56 words
A trickling filter plant according to claim 15, characterized in that the strut means are constructed with a cross-section of an I-shape, and in that the angle iron means extending along the sector edges are threadedly connected to flanges of the profile of the strut means, said flanges extending in the axial direction of the shaft.
Claim 21
Dependent Claim
56 words
A trickling filter plant according to claim 15, characterized in that the strut means are constructed with a cross-section of a U-shape, and in that the angle iron means extending along the sector edges are treadedly connected to flanges of the profile of the strut meAns, said flanges extending in the axial direction of the shaft.
Claim 22
Dependent Claim
57 words
A trickling filter plant according to claim 15, characterized in that the strut means are constructed with a cross-section of a flat-iron shape, and in that the angle iron means extending along the sector edges are threadedly connected to flanges of the profile of the strut means, said flanges extending in the axial direction of the shaft.
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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) | 1976-12-10 | 1977-06-11 | 1977-12-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-12-10 | 1981-06-11 | 1981-12-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-12-10 | 1985-06-11 | 1985-12-11 | $7700.00 | Window Closed / Lapsed |