US3878102A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Locking means for filter plates in a filter press
Assignee: Aqseptence Group GmbH
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Filing: 1973-10-12
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Granted: 1975-04-15
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Expires: 1993-10-12
Abstract
Abstract Apparatus for locking filter plates in a filter press embodying ratchet means extending longitudinally of the filter press with the plates being movable relative to the ratchet means. A movable actuating member is carried by each filter plate and is movable selectively to an operative position in engagement with the ratchet means and to an inoperative position out of engagement with the ratchet means.
Inventors
- 👤 Oswald Busse
- 👤 Hugo Klesper
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 21:31
CPC Classifications
B; B01; B01D; B01D25/00; B01D25/12; B01D25/172
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
214 words
In apparatus for locking filter plates in a filter press embodying a plurality of filter plates movable longitudinally along guides: a. at least one rack-like member extending longitudinally of the filter press in the direction of movement of said filter plates with said filter plates being adapted for movement relative to said rack-like member, b. at least one movable actuating member carried by each filter plate and movable selectively to an operative position in engagement with said rack-like member and to an inoperable position out of engagement with said rack-like member, c, an elongated drive member movable longitudinally of the filter press, d. hook-like members carried by said drive member with each hook-like member being movable selectively to an upper inoperative position and a lower operative position, e. a lever arm carried by each filter plate and movable with said actuating member and extending into the path of movement of and engageable with said hook-like member to move said actuating member from its operative position in engagement with said rack-like member to its inoperative position out of engagement with said rack-like member and then shift said filter plate, and f. means for moving said hook-like member out of engagement with said lever arm at the end of the shifting movement of each filter plate.
Claim 2
Dependent Claim
214 words
In apparatus for locking filter plates in a filter press embodying a plurality of filter plates movable longitudinally along guides: a. at least one rack-like member extending longitudinally of the filter press in the direction of movement of said filter plates with said filter plates being adapted for movement relative to said rack-like member, b. at least one movable actuating member carried by each filter plate and movable selectively to an operative position in engagement with said rack-like member and to an inoperable position out of engagement with said rack-like member, c, an elongated drive member movable longitudinally of the filter press, d. hook-like members carried by said drive member with each hook-like member being movable selectively to an upper inoperative position and a lower operative position, e. a lever arm carried by each filter plate and movable with said actuating member and extending into the path of movement of and engageable with said hook-like member to move said actuating member from its operative position in engagement with said rack-like member to its inoperative position out of engagement with said rack-like member and then shift said filter plate, and f. means for moving said hook-like member out of engagement with said lever arm at the end of the shifting movement of each filter plate.
Claim 3
Dependent Claim
54 words
Apparatus as defined in claim 1 in which each hook-like member has a leading, sloped cam portion which precedes a catch element on said hook-like member so that upon contacting a preceding lever arm said cam portion moves said catch element out of engagement with the succeeding lever arm on a succeeding filter plate.
Claim 4
Dependent Claim
50 words
Apparatus as defined in claim 1 in which said rack-like member is movable selectively to an inoperative position outwardly of the path of movement of said actuating member and to an operative position in the path of movement of said actuating member whereby it is engageable with said actuating member.
Claim 5
Dependent Claim
28 words
Apparatus as defined in claim 1 in which said rack-like member is a toothed rack and said actuating member carries a pawl which cooperates with said toothed rack.
Claim 6
Dependent Claim
51 words
Apparatus as defined in claim 1 in which each filter plate is provided with a stop member in position to engage and actuate the actuating member of the succeeding filter plate as viewed in the direction in which the filter press is opened to force said actuating member into operative position.
Claim 7
Dependent Claim
73 words
Apparatus as defined in claim 5 in which said lever arm is mounted for independent pivotal movement relative to said actuating member, and cams are carried by said lever arm in position to engage said actuating member after a limited amount of pivotal movement of said lever arm Relative to said actuating member in either direction so that said actuating member rotates with said lever arm after said limited amount of pivotal movement.
Claim 8
Dependent Claim
55 words
Apparatus as defined in claim 1 in which each filter plate carries stop members in position to limit movement of said actuating member in opposite directions so that said actuating member is stopped in said operative position upon movement in one direction and is stopped in said inoperative position upon movement in the other direction.
Claim 9
Dependent Claim
71 words
Apparatus as defined in claim 1 in which said actuating member is movable about a pivot point and the center of gravity of said actuating member while in said operative position is shifted to one side of a neutral position located in a vertical plane passing through said pivot point and while in said inoperative position is shifted to the other side of said vertical plane passing through said pivot point.
Claim 10
Dependent Claim
49 words
Apparatus as defined in claim 1 in which a pair of laterally disposed actuating members are carried by each filter plate in position to cooperate with a pair of laterally disposed rack-like members mounted at opposite sides of a vertical plane passing through the center of the filter press.
Claim 11
Dependent Claim
73 words
Apparatus as defined in claim 1 in which shifting means is provided for shifting said rack-like member into operative position only when the pressure head of the filter press has been moved away from a stack of filter plates and pressure on the filter plates is released and means is provided for shifting said rack-like member to said inoperative position before the pressure head of the filter press is returned to operating position.
Claim 12
Dependent Claim
50 words
Apparatus as defined in claim 10 in which said shifting means is actuated by control means which is operatively connected to said pressure head so that said ratchet member is moved to said operative position and said inoperative position at the end and at the beginning of each cycle, respectively.
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) | 1978-04-14 | 1978-10-14 | 1979-04-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-04-14 | 1982-10-14 | 1983-04-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-04-14 | 1986-10-14 | 1987-04-15 | $7700.00 | Window Closed / Lapsed |