Patent US4147634A successfully refreshed from Google Patents.
US4147634A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Deflector blade for rotary drum filter
Assignee: Baker Hughes Holdings LLC
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Filing: 1978-03-15
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Granted: 1979-04-03
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Expires: 1998-03-15
Abstract
Abstract A segmented cake discharge deflector blade for rotary drum filters. Each segment includes a straight blade mounted on a plurality of spaced apart U-shaped flat steel springs with the free edge of the straight blade extending beyond the closed end of the U. The face of the filter tank is provided with a clamp for receiving the free end of the other leg of each spring. The springs are preselected for proper tension. Complemental elements on the tank wall and springs cooperative with each other provide proper positioning of the free edge of the blade segments relative to the drum face.
Inventors
- 👤 Willi A. Wegener
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 23:54
CPC Classifications
B; B01; B01D; B01D33/00; B01D33/06; B01D33/44; B01D33/46; B01D33/466
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
139 words
A deflector blade assembly on a vacuum filter of the type having a drum journalled for rotation in a tank, said assembly including a plurality of adjacent seaprate blade segments positioned side-by-side on the wall of said tank in position to deflect cake released from said drum to a location outside said tank each segment comprising a straight blade secured to at least two spaced apart U-shaped flat springs with the free edge of said blade extending an equal distance beyond the closed end of each of said U-shaped springs, means detachably securing said blade to said tank including complemental elements on the free end of said U-shaped spring and on said tank cooperating with each other to position said springs and thus said straight blade relative to the surface of said drum and to said adjacent blade segments.
Claim 2
Dependent Claim
139 words
A deflector blade assembly on a vacuum filter of the type having a drum journalled for rotation in a tank, said assembly including a plurality of adjacent seaprate blade segments positioned side-by-side on the wall of said tank in position to deflect cake released from said drum to a location outside said tank each segment comprising a straight blade secured to at least two spaced apart U-shaped flat springs with the free edge of said blade extending an equal distance beyond the closed end of each of said U-shaped springs, means detachably securing said blade to said tank including complemental elements on the free end of said U-shaped spring and on said tank cooperating with each other to position said springs and thus said straight blade relative to the surface of said drum and to said adjacent blade segments.
Claim 3
Dependent Claim
45 words
A deflector blade assembly according to preceding claim 1 in which said completemental elements on said springs and tank comprise a pin on either said tank or springs and a U-shaped slot on the other of said tank or springs adapted to receive said pin.
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) | 1982-04-02 | 1982-10-02 | 1983-04-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-04-02 | 1986-10-02 | 1987-04-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-04-02 | 1990-10-02 | 1991-04-03 | $7700.00 | Window Closed / Lapsed |