Patent US3731808A successfully refreshed from Google Patents.
US3731808A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Filter apparatus
Assignee: Individual
•
Filing: 1971-04-07
•
Granted: 1973-05-08
•
Expires: 1991-04-07
Abstract
Abstract A filter apparatus for filtering solutions of various kinds and for various purposes including metal and like plating solutions including a filter housing having a web inlet opening and a web outlet opening through which a web of filter sheet material is drawn into the filter housing and the used sections thereof removed at intervals from the filter housing. Combination closure, sealing and web-clamping means or units are provided for cyclically opening and closing, sealing and clamping the web of filter sheet material in the web inlet and the web outlet openings of the filter housing. Means including an air pressure system embodying air-operated valves are provided for cyclically operating the combination closure, sealing and web-clamping means or units for the web inlet and web outlet openings of the filter housing. The filter apparatus also includes means for cyclically pumping the filter solution into the filter housing and for removing the filtrate therefrom. The air pressure system includes air-operated valves for opening and closing the filter solution inlet in the filter housing and the filtrate outlet therefrom, and air pressure-responsive regulator switch means and an electronic timing switch means are provided for cyclically controlling the operation of the air valves for the web inlet and the web outlet openings in the filter housing and for cyclically controlling the operation of the air valves for the filter solution inlet and the filtrate outlet in the filter housing, and for other purposes. A web of filter sheet material is provided having longitudinally spaced fluid-resistant areas or sections, which are resistant to filter solutions, for sealing the web inlet and web outlet openings in the filter housing during the filtering operation. Means are provided for cyclically advancing the web of filter sheet material into and through the filter housing. The apparatus also includes means for cyclically withdrawing unused filter solution from the filter housing at the end of each cycle of operations thereof and for withdrawing excess of filter solution from the web of filter sheet material at the end of each filtering operation and prior to the time when the used section of filter material is withdrawn from the filter housing and cut from the web of filter sheet material.
Inventors
- 👤 S Rickert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 14:35
CPC Classifications
B; B01; B01D; B01D29/00; B01D29/60; B01D29/603; B01D29/09
Claims Analysis
Total Claims: 34
Claim 1
Independent Claim
416 words
A filter apparatus comprising a. a filter housing having 1. a filter solution inlet; 2. a filtrate outlet; 3. a filter web inlet for a web of flexible filter sheet material; b. means for circulating a filter solution into the said filter housing through the said filter solution inlet therefor and through the said filter housing and for withdrawing the filtrate from the said filter housing through the filtrate outlet; c. web-advancing means for cyclically advancing the said web of flexible filter sheet material into and through the said filter web inlet and between the said filter solution inlet and the said filtrate outlet and thence out of the said filter housing through the said filter web outlet; d. first means for cyclically closing and sealing the said filter web inlet and for clamping the said web of flexible filter sheet material in the said filter web inlet; e. second means for cyclically closing and sealing the said filter web outlet in the said filter housing and for clamping the said web of flexible filter sheet material in the said filter web outlet; f. means for cyclically opening and closing the said filter solution inlet into the said filter housing; g. means for cyclically opening and closing the said filtrate outlet from the said filter housing; h. the said first means for cyclically closing and sealing the said filter web inlet and for clamping the said web of flexible filter sheet material in the said filter web inlet including 1. a flexible, resilient, stationary member mounted on the said filter housing at the said filter web inlet and having an auxiliary filter web inlet therein in registry with the said filter web inlet in the said filter housing for the passage of the said web of flexible filter sheet material; 2. a movable pressure-applying member adapted to be moved into engagement with the said flexible, resilient, stationary member to close and seal the said first-named filter web inlet in the said filter housing and the said auxiliary web inlet and to clamp the said web of flexible, filter sheet material between the said stationary member and the said movable member; and i. means for cyclically applying fluid pressure to the said movable pressure-applying member so as to move the same into engagement with the said flexible, resilient stationary member to close and seal the said first-named web inlet and the said auxiliary web inlet and to clamp the said web of flexible filter sheet material therein.
Claim 2
Dependent Claim
416 words
A filter apparatus comprising a. a filter housing having 1. a filter solution inlet; 2. a filtrate outlet; 3. a filter web inlet for a web of flexible filter sheet material; b. means for circulating a filter solution into the said filter housing through the said filter solution inlet therefor and through the said filter housing and for withdrawing the filtrate from the said filter housing through the filtrate outlet; c. web-advancing means for cyclically advancing the said web of flexible filter sheet material into and through the said filter web inlet and between the said filter solution inlet and the said filtrate outlet and thence out of the said filter housing through the said filter web outlet; d. first means for cyclically closing and sealing the said filter web inlet and for clamping the said web of flexible filter sheet material in the said filter web inlet; e. second means for cyclically closing and sealing the said filter web outlet in the said filter housing and for clamping the said web of flexible filter sheet material in the said filter web outlet; f. means for cyclically opening and closing the said filter solution inlet into the said filter housing; g. means for cyclically opening and closing the said filtrate outlet from the said filter housing; h. the said first means for cyclically closing and sealing the said filter web inlet and for clamping the said web of flexible filter sheet material in the said filter web inlet including 1. a flexible, resilient, stationary member mounted on the said filter housing at the said filter web inlet and having an auxiliary filter web inlet therein in registry with the said filter web inlet in the said filter housing for the passage of the said web of flexible filter sheet material; 2. a movable pressure-applying member adapted to be moved into engagement with the said flexible, resilient, stationary member to close and seal the said first-named filter web inlet in the said filter housing and the said auxiliary web inlet and to clamp the said web of flexible, filter sheet material between the said stationary member and the said movable member; and i. means for cyclically applying fluid pressure to the said movable pressure-applying member so as to move the same into engagement with the said flexible, resilient stationary member to close and seal the said first-named web inlet and the said auxiliary web inlet and to clamp the said web of flexible filter sheet material therein.
Claim 3
Dependent Claim
3 words
a filtrate outlet;
Claim 4
Dependent Claim
3 words
a filtrate outlet;
Claim 5
Dependent Claim
21 words
means for supplying air under pressure to the said pneumatically operated piston means; i. the said flexible, resilient stationary member including
Claim 6
Dependent Claim
21 words
means for supplying air under pressure to the said pneumatically operated piston means; i. the said flexible, resilient stationary member including
Claim 7
Dependent Claim
84 words
a movable pressure-applying member adapted to be moved into engagement with the said flexible, resilient, stationary member to close and seal the said first-named filter web outlet in the said filter housing and to close and seal the said auxiliary filter web outlet and to clamp the said web of flexible filter sheet material between the said stationary member and the said movable member; h. means for cyclically moving the said movable pressure-applying member into engagement with the said flexible, resilient stationary member including
Claim 8
Dependent Claim
84 words
a movable pressure-applying member adapted to be moved into engagement with the said flexible, resilient, stationary member to close and seal the said first-named filter web outlet in the said filter housing and to close and seal the said auxiliary filter web outlet and to clamp the said web of flexible filter sheet material between the said stationary member and the said movable member; h. means for cyclically moving the said movable pressure-applying member into engagement with the said flexible, resilient stationary member including
Claim 9
Dependent Claim
39 words
the said web of flexible filter sheet material has a. areas of fluid-resistant material arranged thereon at spaced intervals longitudinally of the said elongated flexible sheet body and extending between the said marginal edge portions thereof; and in which
Claim 10
Dependent Claim
39 words
the said web of flexible filter sheet material has a. areas of fluid-resistant material arranged thereon at spaced intervals longitudinally of the said elongated flexible sheet body and extending between the said marginal edge portions thereof; and in which
Claim 11
Dependent Claim
115 words
a movable pressure-applying member adapted to be moved into engagement with the said flexible, resilient, stationary member to close and seal the said first-named filter web inlet in the said filter housing and the said auxiliary web inlet and to clamp the said web of flexible, filter sheet material between the said stationary member and the said movable member; and i. means for cyclically applying fluid pressure to the said movable pressure-applying member so as to move the same into engagement with the said flexible, resilient stationary member to close and seal the said first-named web inlet and the said auxiliary web inlet and to clamp the said web of flexible filter sheet material therein.
Claim 12
Dependent Claim
115 words
a movable pressure-applying member adapted to be moved into engagement with the said flexible, resilient, stationary member to close and seal the said first-named filter web inlet in the said filter housing and the said auxiliary web inlet and to clamp the said web of flexible, filter sheet material between the said stationary member and the said movable member; and i. means for cyclically applying fluid pressure to the said movable pressure-applying member so as to move the same into engagement with the said flexible, resilient stationary member to close and seal the said first-named web inlet and the said auxiliary web inlet and to clamp the said web of flexible filter sheet material therein.
Claim 13
Dependent Claim
18 words
A filter apparatus as defined in claim 1 in which a. the said flexible, resilient, stationary member includes
Claim 14
Dependent Claim
52 words
the said auxiliary filter web inlet is in the form of an elongated generally rectangular-shaped filter web inlet formed in the said flexible, resilient body and adapted to be cyclically closed and sealed by engagement of the said movable pressure-applying member with the said flexible, rEsilient body of the said stationary member.
Claim 15
Dependent Claim
52 words
the said auxiliary filter web inlet is in the form of an elongated generally rectangular-shaped filter web inlet formed in the said flexible, resilient body and adapted to be cyclically closed and sealed by engagement of the said movable pressure-applying member with the said flexible, rEsilient body of the said stationary member.
Claim 16
Dependent Claim
3 words
a filtrate outlet;
Claim 17
Dependent Claim
3 words
a filtrate outlet;
Claim 18
Dependent Claim
22 words
marginal edge portions surrounding the said auxiliary web inlet; and in which the said flexible, resilient body of the stationary member includes
Claim 19
Dependent Claim
22 words
marginal edge portions surrounding the said auxiliary web inlet; and in which the said flexible, resilient body of the stationary member includes
Claim 20
Dependent Claim
230 words
a filter web inlet for a web of flexible filter sheet material; b. means for circulating a filter solution into the said filter housing through the said filter solution inlet therefor and through the said filter housing and for withdrawing the filtrate from the said filter housing through the filtrate outlet; c. web-advancing means for cyclically advancing the said web of flexible filter sheet material into and through the said filter web inlet and between the said filter solution inlet and the said filtrate outlet and thence out of the said filter housing through the said filter web outlet; d. first means for cyclically closing and sealing the said filter web inlet and for clamping the said web of flexible filter sheet material in the said filter web inlet; e. second means for cyclically closing and sealing the said filter web outlet in the said filter housing and for clamping the said web of flexible filter sheet material in the said filter web outlet; f. means for cyclically opening and closing the said filter solution inlet into the said filter housing; g. means for cyclically opening and closing the said filtrate outlet from the said filter housing; h. the said first means for cyclically closing and sealing the said filter web inlet and for clamping the said web of flexible filter sheet material in the said filter web inlet including
Claim 21
Dependent Claim
230 words
a filter web inlet for a web of flexible filter sheet material; b. means for circulating a filter solution into the said filter housing through the said filter solution inlet therefor and through the said filter housing and for withdrawing the filtrate from the said filter housing through the filtrate outlet; c. web-advancing means for cyclically advancing the said web of flexible filter sheet material into and through the said filter web inlet and between the said filter solution inlet and the said filtrate outlet and thence out of the said filter housing through the said filter web outlet; d. first means for cyclically closing and sealing the said filter web inlet and for clamping the said web of flexible filter sheet material in the said filter web inlet; e. second means for cyclically closing and sealing the said filter web outlet in the said filter housing and for clamping the said web of flexible filter sheet material in the said filter web outlet; f. means for cyclically opening and closing the said filter solution inlet into the said filter housing; g. means for cyclically opening and closing the said filtrate outlet from the said filter housing; h. the said first means for cyclically closing and sealing the said filter web inlet and for clamping the said web of flexible filter sheet material in the said filter web inlet including
Claim 22
Dependent Claim
22 words
A filter apparatus as defined in claim 2 in which a. the said, flexible, resilient body of the said stationary member includes
Claim 23
Dependent Claim
98 words
a raised, flexible resilient rib surrounding the said marginal edge of the said generally rectangular-shaped auxiliary web inlet and projecting toward the said filter housing and toward the said movable pressure-applying member outwardly of the said inner surface of the said flexible, resilient body and adapted to be engaged by the said movable pressure-applying member so as to close and seal the said first filter web inlet in the said filter housing and to close and seal the said auxiliary filter web inlet and to clamp the said web of flexible material in the said filter web inlet.
Claim 24
Dependent Claim
98 words
a raised, flexible resilient rib surrounding the said marginal edge of the said generally rectangular-shaped auxiliary web inlet and projecting toward the said filter housing and toward the said movable pressure-applying member outwardly of the said inner surface of the said flexible, resilient body and adapted to be engaged by the said movable pressure-applying member so as to close and seal the said first filter web inlet in the said filter housing and to close and seal the said auxiliary filter web inlet and to clamp the said web of flexible material in the said filter web inlet.
Claim 25
Dependent Claim
70 words
the said sections of fluid-resistant material are spaced at intervals longitudinally of the said flexible sheet body corresponding to the spacing of the said first and second means so that when the said first and second means are moved into operative position they will seal and clampingly engage the said sections of fluid-resistant material on the said flexible filter sheet body of the said web of flexible filter sheet material.
Claim 26
Dependent Claim
70 words
the said sections of fluid-resistant material are spaced at intervals longitudinally of the said flexible sheet body corresponding to the spacing of the said first and second means so that when the said first and second means are moved into operative position they will seal and clampingly engage the said sections of fluid-resistant material on the said flexible filter sheet body of the said web of flexible filter sheet material.
Claim 27
Dependent Claim
13 words
a filter web inlet for a web of flexible filter sheet material; and
Claim 28
Dependent Claim
13 words
a filter web inlet for a web of flexible filter sheet material; and
Claim 29
Dependent Claim
186 words
a filter web outlet for the web of flexible filter sheet material; b. means for circulating a filter solution into the said filter housing through the said filter solution inlet therefor and through the said filter housing and for withdrawing the filtrate from the said filter housing through the said filtrate outlet; c. web-advancing means for cyclically advancing the said web of flexible filter sheet material into and through the said filter web inlet and between the said filter solution inlet and the said filtrate outlet and thence out of the said filter housing Through the said filter web outlet; d. first means for cyclically closing and sealing the said filter web inlet and for clamping the said web of flexible filter sheet material in the said filter web inlet; e. second means for cyclically closing and sealing the said filter web outlet in the said filter housing and for clamping the said web of flexible filter sheet material in the said filter web outlet; f. means for cyclically opening and closing the said filtrate outlet from the said filter housing; the said second means including
Claim 30
Dependent Claim
186 words
a filter web outlet for the web of flexible filter sheet material; b. means for circulating a filter solution into the said filter housing through the said filter solution inlet therefor and through the said filter housing and for withdrawing the filtrate from the said filter housing through the said filtrate outlet; c. web-advancing means for cyclically advancing the said web of flexible filter sheet material into and through the said filter web inlet and between the said filter solution inlet and the said filtrate outlet and thence out of the said filter housing Through the said filter web outlet; d. first means for cyclically closing and sealing the said filter web inlet and for clamping the said web of flexible filter sheet material in the said filter web inlet; e. second means for cyclically closing and sealing the said filter web outlet in the said filter housing and for clamping the said web of flexible filter sheet material in the said filter web outlet; f. means for cyclically opening and closing the said filtrate outlet from the said filter housing; the said second means including
Claim 31
Dependent Claim
30 words
A filter apparatus as defined in claim 1 which includes a. a web of flexible filter sheet material; and in which the said web of flexible filter sheet material includes
Claim 32
Dependent Claim
22 words
Filter apparatus as defined in claim 4 in which a. the said elongated generally rectangular-shaped flexible body of filter sheet material has
Claim 33
Dependent Claim
9 words
A filter apparatus comprising a. a filter housing having
Claim 34
Dependent Claim
9 words
A filter apparatus comprising a. a filter housing having
References Cited (Backward Citations)
US2867324A
Cited
US2867327A
Cited
US2969148A
Cited
US3335862A
Cited
US3333693A
Cited
US3443695A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-05-07 | 1976-11-06 | 1977-05-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-05-07 | 1980-11-06 | 1981-05-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-05-07 | 1984-11-06 | 1985-05-08 | $7700.00 | Window Closed / Lapsed |