Patent US3598238A successfully refreshed from Google Patents.
US3598238A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for cleaning analyzer and other filters
Assignee: Individual
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Filing: 1969-07-30
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Granted: 1971-08-10
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Expires: 1989-07-30
Abstract
Abstract There are two preferred embodiments to this invention. In one preferred embodiment a dual filter screen, small particle bypass filter is secured with a timing device and valve-switching means to permit sample analyzer stream flow through alternate sides of the filter. The swirling action of the stream flow in the body alternately washes and cleans the small particle filter screen not in use. In the other preferred embodiment a double actuating piston is positioned between the outlet streams of each of the filter caps of the filter body and a timing mechanism actuates the piston to alternately block one of the filtered streams. As the cylinder heads of the piston move into the respective filtered stream, the head moves fluid in the stream back toward the filter body and through the respective filter screen associated with each stream to back wash the respective small particle filter screen and remove clogged materials on the filter screen.
Inventors
- 👤 Henry R Collins Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 09:16
CPC Classifications
B; B01; B01D; B01D29/00; B01D29/01; B01D29/05; B01D29/50; B01D29/52; B01D29/88; B01D29/90; B01D29/904
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
243 words
An apparatus for continuously washing a bypass filter communicating with an analyzer, the filter including a pair of filter caps housing the filters and communicating with a cavity in a central body filter, the central body filter having an inlet and outlet for continuously accepting and discharging a process stream comprising: a. A first outlet line extending through one of the filter caps and communicating with the cavity, wherein fluids moving from the cavity into said outlet line are filtered through the particle filter positioned adjacent the filter cap; b. a second outlet line extending through the other of the filter caps and communicating with the cavity, wherein fluids moving from the cavity into said outlet line are filtered through the particle filter positioned adjacent the filter cap; c. a three-way solenoid valve receiving each of such opposite ends of said first and second outlet lines; d. a third outlet line extending from said three-way solenoid valve to the analyzer system; and e. a continuous on-off timer and valve operator electrically connected to said three-way solenoid valve wherein electrical actuation of said solenoid valve enables each of said first and second outlet lines to alternately communicate with said third outlet line and wherein alternate blocking of said first and second lines enables each of the particle filters positioned adjacent said alternately blocked first and second outlets to be washed when said first and second outlets are prevented from communicating with said third outlet.
Claim 2
Independent Claim
243 words
An apparatus for continuously washing a bypass filter communicating with an analyzer, the filter including a pair of filter caps housing the filters and communicating with a cavity in a central body filter, the central body filter having an inlet and outlet for continuously accepting and discharging a process stream comprising: a. A first outlet line extending through one of the filter caps and communicating with the cavity, wherein fluids moving from the cavity into said outlet line are filtered through the particle filter positioned adjacent the filter cap; b. a second outlet line extending through the other of the filter caps and communicating with the cavity, wherein fluids moving from the cavity into said outlet line are filtered through the particle filter positioned adjacent the filter cap; c. a three-way solenoid valve receiving each of such opposite ends of said first and second outlet lines; d. a third outlet line extending from said three-way solenoid valve to the analyzer system; and e. a continuous on-off timer and valve operator electrically connected to said three-way solenoid valve wherein electrical actuation of said solenoid valve enables each of said first and second outlet lines to alternately communicate with said third outlet line and wherein alternate blocking of said first and second lines enables each of the particle filters positioned adjacent said alternately blocked first and second outlets to be washed when said first and second outlets are prevented from communicating with said third outlet.
Claim 3
Dependent Claim
56 words
The structure as set forth in claim 1 including: a. movable means positioned adjacent each of said first and second outlets for moving fluid in each of said first and second outlets when said outlets are blocked, said movable means backwashing fluid back through the particle filter adjacent the blocked outlet to clean the particle filter.
Claim 4
Dependent Claim
92 words
The structure as set forth in claim 2 wherein said movable means includes: a. air supply means electrically connected to said continuous on-off timer; b. a double actuating cylinder head responsive to the actuations of said air supply means; c. means responsive to said double actuating cylinder head for movement relative to each of said first and second outlet lines wherein blocking of one of said outlets causes said means responsive to said double actuating cylinder to move fluid in said blocked outlet back through the particle filter adjacent said blocked outlet.
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) | 1974-08-09 | 1975-02-08 | 1975-08-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-09 | 1979-02-08 | 1979-08-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-09 | 1983-02-08 | 1983-08-10 | $7700.00 | Window Closed / Lapsed |