Patent US1679191A successfully refreshed from Google Patents.
Patent US3915863A successfully refreshed from Google Patents.
US3915863A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for shifting, locking and unlocking filter plates in a pressure filter
Assignee: Aqseptence Group GmbH
•
Filing: 1974-08-29
•
Granted: 1975-10-28
•
Expires: 1994-08-29
Abstract
Abstract Apparatus for shifting, locking and unlocking filter plates in a pressure filter having filter plates mounted for horizontal shifting movement by a driven shifting unit. A pawl-like member engages catch elements on the filter plates and at least one resilient, yielding member is associated with the means for transmitting power from the driven shifting unit to the filter plates.
Inventors
- 👤 Oswald Busse
- 👤 Hugo Klesper
- 👤 Werner Junker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 22:30
CPC Classifications
B; B01; B01D; B01D25/00; B01D25/12; B01D25/172
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
147 words
IN A PRESSURE FILTER HAVING FILTER PLATES MOUNTED FOR A HORIZONTAL SHIFTING, A. A DRIVEN SHIFTING UNIT MOVABLE IN THE DIRECTION OF SHIFTING, B. AT LEAST ONE ENGAGING MEMBER CARRIED BY SAID DRIVEN SHAFT UNIT, C. A LEAF SPRING CATCH MEMBER CARRIED BY EACH FILTER PLATE AND EXTENDING UPWARDLY INTO THE PATH OF MOVEMENT OF SAID ENGAGING MEMBER IN POSITION TO BE ENGAGED BY SAID ENGAGING MEMBER TO TRANSMIT ACCELERAATIVE FORCE FROM SAID DRIVEN SHIFTING UNIT TO SAID FILTER PLATE BEING SHIFTED AND GRADUALLY INCREASE THE SPEED AT WHICH THE FILTER PLATE IS MOVED UNTIL IT REACHES THE SPEED OF SAID DRIVEN SHIFTING UNIT, D. A MOVABLE, LEAF SPRING LOCKING MEMBER CARRIED BY ADJACENT FILTER PLATES WITH SAID CATCH MEMBER COOPERATING WITH SAID LOCKING MEMBER AND SAID ENGAGING MEMBER TO RELEASE SAID LOCKING MEMBER, AND E. A LEAF SPRING STOP MEMBER LIMITING MOVEMENT OF SAID CATCH MEMBER.
Claim 2
Dependent Claim
147 words
IN A PRESSURE FILTER HAVING FILTER PLATES MOUNTED FOR A HORIZONTAL SHIFTING, A. A DRIVEN SHIFTING UNIT MOVABLE IN THE DIRECTION OF SHIFTING, B. AT LEAST ONE ENGAGING MEMBER CARRIED BY SAID DRIVEN SHAFT UNIT, C. A LEAF SPRING CATCH MEMBER CARRIED BY EACH FILTER PLATE AND EXTENDING UPWARDLY INTO THE PATH OF MOVEMENT OF SAID ENGAGING MEMBER IN POSITION TO BE ENGAGED BY SAID ENGAGING MEMBER TO TRANSMIT ACCELERAATIVE FORCE FROM SAID DRIVEN SHIFTING UNIT TO SAID FILTER PLATE BEING SHIFTED AND GRADUALLY INCREASE THE SPEED AT WHICH THE FILTER PLATE IS MOVED UNTIL IT REACHES THE SPEED OF SAID DRIVEN SHIFTING UNIT, D. A MOVABLE, LEAF SPRING LOCKING MEMBER CARRIED BY ADJACENT FILTER PLATES WITH SAID CATCH MEMBER COOPERATING WITH SAID LOCKING MEMBER AND SAID ENGAGING MEMBER TO RELEASE SAID LOCKING MEMBER, AND E. A LEAF SPRING STOP MEMBER LIMITING MOVEMENT OF SAID CATCH MEMBER.
Claim 3
Dependent Claim
42 words
A pressure filter as defined in claim 1 in which the spring action of the locking member is opposed to the direction of shifting and the locking member is retained in locked position by a retaining element carried by the catch member.
Claim 4
Dependent Claim
24 words
A pressure filter as defined in claim 1 in which one end of each catch member and locking member is firmly anchored in place.
Claim 5
Dependent Claim
22 words
A pressure filter as defined in claim 3 in which said catch member and said locking Member are connected to each other.
Claim 6
Dependent Claim
31 words
A pressure filter as defined in claim 1 in which said locking member and said catch member are integral parts of a common leaf spring one end of which is anchored.
Claim 7
Dependent Claim
33 words
A pressure filter as defined in claim 1 in which said leaf spring catch member has an aperture therein in position to be engaged by a locking member of an adjacent filter plate.
Claim 8
Dependent Claim
31 words
A pressure filter as defined in claim 1 in which said leaf spring catch member has a minor spring tension and the leaf spring stop member has a greater spring tension.
Claim 9
Dependent Claim
20 words
A pressure filter as defined in claim 1 in which said leaf springs comprise spring piles with progressive spring action.
Claim 10
Dependent Claim
53 words
A pressure filter as defined in claim 1 in which a laminated spring comprising more than one flexible yielding leaf is carried by each filter plate in position to support a catch member for pivotal movement and be engaged by said catch member and a locking member is carried by each catch member.
Claim 11
Dependent Claim
18 words
A pressure filter as defined in claim 9 in which said laminated spring is a laminated spring package.
Claim 12
Dependent Claim
42 words
A pressure filter as defined in claim 9 in which said catch member carrying said locking member is pivotally mounted adjacent the upper end of said laminated spring with the lower end of said laminated spring being carried by a filter plate.
Claim 13
Dependent Claim
26 words
A pressure filter as defined in claim 9 in which the locking member and catch member are retained in the released position by a retaining spring.
Claim 14
Dependent Claim
33 words
A pressure filter as defined in claim 12 in which a release arm is mounted in position to engage and release said retaining spring upon movement of adjacent filter plates toward each other.
References Cited (Backward Citations)
US1689556A
Cited
US2530786A
Cited
US2871012A
Cited
US3207315A
Cited
US3232435A
Cited
US3360130A
Cited
US3306455A
Cited
US3563386A
Cited
US3567027A
Cited
US3765458A
Cited
US3802565A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-10-27 | 1979-04-28 | 1979-10-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-10-27 | 1983-04-28 | 1983-10-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-10-27 | 1987-04-28 | 1987-10-28 | $7700.00 | Window Closed / Lapsed |