Patent US3726510A successfully refreshed from Google Patents.
US3726510A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Agitator mounting for drum filters
Assignee: Envirotech Corp
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Filing: 1971-03-04
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Granted: 1973-04-10
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Expires: 1991-03-04
Abstract
Abstract An improved agitator mounting for drum filters having agitator pins located below the drum''s center axis has been developed. The improved agitator mounting provides means for driving a submerged, suspended rake-type agitator through a pin and bearing means mounted through the wall of the filter tank. The improved mounting means, which may be completely removed from outside the tank, comprises bearing means mounted externally, a pin seating in said bearing means, said pin secured to the agitator arm by bolts or other means fastened externally, and a drive arm attached to said pin by external means. A boot may also be attached between the agitator arm and the tank wall to house the agitator mounting and provide a liquid seal to prevent liquid contact with the agitator mounting.
Inventors
- 👤 S Davis
- 👤 M Durrant
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 22:10
CPC Classifications
F; F16; F16D; F16D1/00; F16D1/06; B; B01; B01D; B01D33/00; B01D33/06; Y; Y10; Y10T; Y10T403/00; Y10T403/70; Y10T403/7016
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
100 words
An agitator drive assembly for mounting below the trunnions of drum-type filters at least partially enclosed by a filter tank, said assembly comprising: a. bearing means mounted against an exterior wall of said filter tank and communicating with an opening in said tank wall, b. removable pin means passing through said bearing means, said pin means adapted to engage an agitator support, c. removable fastening means extending through said pin means securing said pin means to said agitator support, d. means for externally driving said pin means, and e. external means for disengaging said pin means from said agitator support.
Claim 2
Dependent Claim
100 words
An agitator drive assembly for mounting below the trunnions of drum-type filters at least partially enclosed by a filter tank, said assembly comprising: a. bearing means mounted against an exterior wall of said filter tank and communicating with an opening in said tank wall, b. removable pin means passing through said bearing means, said pin means adapted to engage an agitator support, c. removable fastening means extending through said pin means securing said pin means to said agitator support, d. means for externally driving said pin means, and e. external means for disengaging said pin means from said agitator support.
Claim 3
Dependent Claim
17 words
The agitator drive assembly of claim 1 wherein said bearing means has a cylindrical interior bearing surface.
Claim 4
Dependent Claim
18 words
The agitator drive assembly of claim 1 wherein said pin means engages the agitator support in driving fashion.
Claim 5
Dependent Claim
30 words
The agitator drive assembly of claim 1 wherein said fastening means comprises at least one bolt passing through said pin means to engage a threaded opening in said agitator support.
Claim 6
Dependent Claim
36 words
The agitator drive assembly of claim 1 wherein said means for driving said pin means comprises a crank arm, the free end of said crank arm being reciprocally driven to describe an arc in its travel.
Claim 7
Dependent Claim
21 words
The agitator drive assembly of claim 5 wherein said crank arm is secured to said pin means by removable fastening means.
Claim 8
Dependent Claim
22 words
The agitator drive assembly of claim 6 wherein external disengaging means is adapted to disengage said crank arm from said pin means.
Claim 9
Dependent Claim
34 words
The agitator drive assembly of claim 6 wherein said fastening means comprises at least one bolt passing through said crank arm and said pin means to engage a threaded opening in said agitator support.
Claim 10
Dependent Claim
49 words
The agitator drive assembly of claim 6 wherein said fastening means includes a second bolt which secures said crank arm only to said pin means and a single disengaging means for disengaging said pin means from said agitator support and for disengaging said crank arm from said pin means.
Claim 11
Dependent Claim
64 words
The agitator drive assembly of claim 9 wherein said single disengaging means comprises at least one jack screw engaging threads only in said crank arm and engaging a rod which passes through a bore hole in said pin means and is slightly longer than said pin means and wherein said jack screw has a greater diameter than the bore hole of said pin means.
Claim 12
Dependent Claim
40 words
The agitator drive assembly of claim 1 wherein said means for disengaging said pin means comprises at least one jack screw for engaging threads in said pin means and passing through said pin means to butt against said agitator support.
Claim 13
Dependent Claim
19 words
The agitator drive assembly of claim 1 wherein said bearing means protrudes through said opening in said tank wall.
Claim 14
Dependent Claim
45 words
The agitator drive assembly of claim 1 wherein a flexible boot-like seal is attached to the agitator support and encompasses at least a portion of the bearing member protruding into said tank to prevent liquid from contacting the bearing surfaces of said pin and bearing.
Claim 15
Dependent Claim
34 words
The agitator drive assembly of claim 13 wherein the flexible boot-like seal possesses a lip at its open end which is adapted to contact the exterior wall of said tank in a sealing fashion.
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) | 1976-04-09 | 1976-10-09 | 1977-04-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-09 | 1980-10-09 | 1981-04-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-09 | 1984-10-09 | 1985-04-10 | $7700.00 | Window Closed / Lapsed |