US3561600A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Filter press of plate-and-frame type
Assignee: Individual
•
Filing: 1970-01-12
•
Granted: 1971-02-09
•
Expires: 1990-01-12
Abstract
Abstract A filter press is of a type which comprises filter plates and filter frames alternately arranged between a stationary end plate and a movable end plate with filtering cloth disposed between the filter plates and filter frames facing each other, the filtering elements being adapted to be pressed together by the movable end plate for filtration, the filter plates being adapted to be separated from the filter frames for the removal of cake. Each frame unit comprises two filter frames hingedly connected together at their upper portions and adapted to be opened in inverted V-shape. The lower portions of the frames are respectively connected to the lower opposite sides of the adjacent plates by means of links. When one filter plate is released, the following frame unit is opened to allow the cake to drop automatically from the cake chamber in the unit.
Inventors
- 👤 Kenichiro Kurita
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 09:26
CPC Classifications
B; B01; B01D; B01D25/00; B01D25/12; B01D25/127; B01D25/172; B01D25/21; B01D25/32; B01D25/38; B01D25/386
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
134 words
In a filter press of plate-and-frame type comprising filter plates and filter frames alternately arranged between a stationary end plate and a movable end plate with filter cloth disposed between the adjacent faces of said filter plates and filter frames, said filter plates and filter frames being adapted to be pressed together by said movable end plate for filtration, said filter plates being adapted to be separated from said filter frames after filtration, a structure comprising filter frame units each of which is formed of two filter frames having cavities in the interioRs thereof and hingedly connected together at their upper portions so as to be opened in inverted V-form, the lower opposite sides of said frames being respectively connected to the lower opposite sides of the adjacent filter plates by means of links.
Claim 2
Dependent Claim
134 words
In a filter press of plate-and-frame type comprising filter plates and filter frames alternately arranged between a stationary end plate and a movable end plate with filter cloth disposed between the adjacent faces of said filter plates and filter frames, said filter plates and filter frames being adapted to be pressed together by said movable end plate for filtration, said filter plates being adapted to be separated from said filter frames after filtration, a structure comprising filter frame units each of which is formed of two filter frames having cavities in the interioRs thereof and hingedly connected together at their upper portions so as to be opened in inverted V-form, the lower opposite sides of said frames being respectively connected to the lower opposite sides of the adjacent filter plates by means of links.
Claim 3
Dependent Claim
49 words
The filter press of plate-and-frame type as claimed in claim 1 wherein pins on holding members attached to the lower opposite sides of the each filter frame of said filter frame unit are engaged with holes in support members fixed to the lower portions of the adjacent filter plate.
Claim 4
Dependent Claim
69 words
The filter press of plate-and-frame type as claimed in claim 1 wherein the lower opposite sides of each filter frame of said filter frame unit are connected to the opposite sides of the adjacent filter plate by means of lateral links and rollers attached to the lower end of each filter frame are supported on rails provided along the opposite sides of the filter press in its longitudinal direction.
Claim 5
Dependent Claim
55 words
The filter press of plate-and-frame type as claimed in claim 3 wherein in a pin attached to each of the lower opposite sides of said filter frame is engaged with a lateral slot at one end of a link connected at the other end to each of the lower opposite sides of said filter plate.
Claim 6
Dependent Claim
25 words
The filter press of plate-and-frame type as claimed in claim 1 wherein filter cloth is disposed in parallel to the faces of said filter plates.
Claim 7
Dependent Claim
45 words
The filter press of plate-and-frame type as claimed in claim 1 wherein filter cloth is passed over the outer peripheral surfaces of upper hinges on said filter frame units and over guide rollers provided at the lower portions of said filter plates in zigzag manner.
Claim 8
Dependent Claim
45 words
The filter press of plate-and-frame type as claimed in claim 1 wherein filter cloth is passed over the outer peripheral surfaces of upper hinges on said filter frame units and over semicircular portions provided at the lower portions of said filter plates in zigzag manner.
Claim 9
Dependent Claim
168 words
In a filter press of plate-and-frame type comprising filter plates and filter frames alternately arranged between a stationary end plate and a movable end plate with filter cloth disposed between the adjacent faces of said filter plates and filter frames, said filter plates and filter frames being adapted to be pressed together by said movable end plate for filtration, said filter plates being adapted to be separated from said filter frames after filtration, a structure comprising filter frame units each of which is formed of two filter frames having cavities in the interiors thereof and hingedly connected together at their upper portions so as to be opened in inverted V-form, the lower opposite sides of said frame being respectively linked to the lower opposite sides of the adjacent filter plates, filter cloth being passed over an upper hinge of said filter frame unit and a guide member at the lower portion of the adjacent filter plate in zigzag manner so that the whole filter cloth may be moved.
Claim 10
Dependent Claim
168 words
In a filter press of plate-and-frame type comprising filter plates and filter frames alternately arranged between a stationary end plate and a movable end plate with filter cloth disposed between the adjacent faces of said filter plates and filter frames, said filter plates and filter frames being adapted to be pressed together by said movable end plate for filtration, said filter plates being adapted to be separated from said filter frames after filtration, a structure comprising filter frame units each of which is formed of two filter frames having cavities in the interiors thereof and hingedly connected together at their upper portions so as to be opened in inverted V-form, the lower opposite sides of said frame being respectively linked to the lower opposite sides of the adjacent filter plates, filter cloth being passed over an upper hinge of said filter frame unit and a guide member at the lower portion of the adjacent filter plate in zigzag manner so that the whole filter cloth may be moved.
Claim 11
Dependent Claim
35 words
The filter press of plate-and-frame type as claimed in claim 8 wherein said guide member for the filter cloth is a slippery semicircular portion formed on the under face of each of said filter plates.
Claim 12
Dependent Claim
23 words
The filter press of plate-and-frame type as claimed in claim 8 wherein said guide member for the filter cloth is a guide roller.
Claim 13
Dependent Claim
58 words
The filter press of plate-and-frame type as claimed in claim 8 wherein said filter cloth is extended over guide rollers mounted on the upper portion of a stationary machine frame and on the upper portion of said movable end plate respectively to be passed through a washing vessel and over a filter cloth tension means in endless manner.
Claim 14
Dependent Claim
31 words
The filter press of plate-and-frame type as claimed in claim 11 wherein said filter cloth tension means is adapted to be slidably moved on said movable end plate by hydraulic means.
References Cited (Backward Citations)
US699052A
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US3289844A
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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) | 1974-02-08 | 1974-08-10 | 1975-02-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-08 | 1978-08-10 | 1979-02-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-08 | 1982-08-10 | 1983-02-09 | $7700.00 | Window Closed / Lapsed |