Patent US4397744A successfully refreshed from Google Patents.
US4397744A
Expired / Lapsed
US
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Filter cloth suspension device for a filter press
Assignee: Kurita Machinery Manufacturing Co Ltd
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Filing: 1981-06-26
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Granted: 1983-08-09
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Expires: 2001-06-26
Abstract
Abstract The upper ends of filter cloths attached to two adjacent filter plates are connected to a filter medium hanger suspended from suspension arms pivotally mounted on one of the filter plates in the upper regions on opposite sides thereof. Arm rests for supporting the suspension arms are provided on the other filter plate in the upper regions on opposite sides thereof. When the filter plates are moved from their closed state for filtration to their opened state upon completion of filtration, the suspension arms, tilting as supported by the arm rests, are caused to vibrate, thereby accelerating the stripping of the cake which has accumulated on the filter cloths connected to the filter medium hanger.
Inventors
- 👤 Hamazaki Haruo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 21:08
CPC Classifications
B; B01; B01D; B01D25/00; B01D25/12; B01D25/127; B01D25/32; B01D25/322
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
177 words
A filter medium suspension device for a filter press having a plurality of filter plates defining opposite abuttable faces and opposite sides, and including first and second adjacent filter plates, said filter medium suspension device comprising a pair of filter medium suspension arms each having a first free end and a second end pivotally mounted at said second end thereof on opposite sides of said first filter plates, said arms extending at an angle upwardly from said second end, a filter medium hanger means suspended from said arms suspending a filter medium by an upper end of the filter medium; said filter medium disposed between said first and second adjacent filter plates, and a pair of filter medium suspension arm rest means each installed on said second filter plate adjacent the opposite sides thereof for supporting by sliding contact said first free ends of said filter medium suspension arms and for providing that the attitude of said filter medium suspension arms is changed as said first and second filter plates are displaced with respect to each other.
Claim 2
Dependent Claim
177 words
A filter medium suspension device for a filter press having a plurality of filter plates defining opposite abuttable faces and opposite sides, and including first and second adjacent filter plates, said filter medium suspension device comprising a pair of filter medium suspension arms each having a first free end and a second end pivotally mounted at said second end thereof on opposite sides of said first filter plates, said arms extending at an angle upwardly from said second end, a filter medium hanger means suspended from said arms suspending a filter medium by an upper end of the filter medium; said filter medium disposed between said first and second adjacent filter plates, and a pair of filter medium suspension arm rest means each installed on said second filter plate adjacent the opposite sides thereof for supporting by sliding contact said first free ends of said filter medium suspension arms and for providing that the attitude of said filter medium suspension arms is changed as said first and second filter plates are displaced with respect to each other.
Claim 3
Dependent Claim
24 words
A filter medium suspension device for filter presses as set forth in claim 1, wherein said filter medium hanger means comprises an elastic member.
Claim 4
Dependent Claim
21 words
A filter medium suspension device for filter presses as set forth in claim 2, wherein said elastic member comprises a spring.
Claim 5
Dependent Claim
22 words
A filter medium suspension device for filter presses as set forth in claim 2, wherein said elastic member comprises a rubber string.
Claim 6
Dependent Claim
32 words
A filter medium suspension device for filter presses as set forth in claim 1, wherein each filter medium suspension arm has a corrugated surface in sliding contact with said arm rest means.
Claim 7
Dependent Claim
47 words
A filter medium suspension device for filter presses as set forth in claim 1 or claim 5, wherein said arm rest means is adjustably mounted on said second filter plate so that its arm supporting level can be changed with respect to said filter medium suspension arm.
Claim 8
Dependent Claim
28 words
A filter medium suspension device for filter presses as set forth in claim 6, wherein said arm rest means is vertically movably installed on said second filter plate.
Claim 9
Dependent Claim
59 words
A filter medium suspension device for filter presses as set forth in claim 6, wherein each of said arm rest means has an arm support surface of varying height extending in the direction of the length of the upper end of said second filter plate to allow adjustment of the position of said arm rest means in said direction.
Claim 10
Dependent Claim
25 words
A filter medium suspension device for filter presses as set forth in claim 8, wherein said varying height arm support surface comprises a stepped surface.
Claim 11
Dependent Claim
25 words
A filter medium suspension device for filter presses as set forth in claim 8, wherein said varying height arm support surface comprises an incline surface.
References Cited (Backward Citations)
US3366244A
Cited
US3669273A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-08-08 | 1987-02-07 | 1987-08-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-08-08 | 1991-02-07 | 1991-08-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-08-08 | 1995-02-07 | 1995-08-09 | $7700.00 | Window Closed / Lapsed |