US3741394A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquid filtering apparatus
Assignee: Individual
•
Filing: 1971-07-07
•
Granted: 1973-06-26
•
Expires: 1991-07-07
Abstract
Abstract A liquid filtering apparatus primarily intended for the filtering of water comprising a housing which includes means for inserting the apparatus in the water line, wherein removable cartridges may be inserted containing suitable filtering means such as activated carbon particles, there being a three-way diverter valve operable to divert water flow through the filtering substance or straight through the apparatus bypassing the filtering substance. The device also includes a metering valve for controlling the back pressure within the unit in order to maximize contact between the fluid and the filtering material.
Inventors
- 👤 L Defenbaugh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 22:05
CPC Classifications
B; B01; B01D; B01D27/00; B01D27/02; B01D27/08; C; C02; C02F; C02F9/00; C02F9/20; C02F1/00; C02F1/28; C02F1/283; C02F2201/00; C02F2201/002; C02F2201/006
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
285 words
A liquid filtering apparatus of the type adapted to accommodate a filter cartridge of the type having upper and lower apertures and containing a quantity of filtering material therein, the combination comprising: an upper housing and a lower housing removably attached together, said lower housing defining a chamber adapted to receive said cartridge therein, said chamber including means defining fluid passages therein communicating with the lower aperture of the said cartridge; said upper housing having fluid inlet and outlet ports, a first lateral passage extending through said upper housing between said inlet and outlet ports, an aperture for receiving said cartridge therein, a second fluid passage extending between said aperture and said first passage, said second passage extending normal to said first passage, a third fluid passage extending normal to said first passage and communicating said first passage with the chamber of said lower housing, said third passage intersecting said first passage intermediate said inlet port and said second passage; diverter valve means situated in said upper housing at the intersection of said first and third passages, said valve means including a movable valve element having a depending flange at one end thereof, a transverse passage through said valve element intermediate the ends thereof, said valve element being slidably movable to a first position whereby said transverse passage is registered with said first passage and said third passage is closed, said valve element being movable to a second position whereby said third passage is openly coupled to said inlet port through a portion of said first passage anD wherein said depending flange is brought into registry with said first passage shutting off direct communication to said outlet port through the remainder of said first passage.
Claim 2
Dependent Claim
285 words
A liquid filtering apparatus of the type adapted to accommodate a filter cartridge of the type having upper and lower apertures and containing a quantity of filtering material therein, the combination comprising: an upper housing and a lower housing removably attached together, said lower housing defining a chamber adapted to receive said cartridge therein, said chamber including means defining fluid passages therein communicating with the lower aperture of the said cartridge; said upper housing having fluid inlet and outlet ports, a first lateral passage extending through said upper housing between said inlet and outlet ports, an aperture for receiving said cartridge therein, a second fluid passage extending between said aperture and said first passage, said second passage extending normal to said first passage, a third fluid passage extending normal to said first passage and communicating said first passage with the chamber of said lower housing, said third passage intersecting said first passage intermediate said inlet port and said second passage; diverter valve means situated in said upper housing at the intersection of said first and third passages, said valve means including a movable valve element having a depending flange at one end thereof, a transverse passage through said valve element intermediate the ends thereof, said valve element being slidably movable to a first position whereby said transverse passage is registered with said first passage and said third passage is closed, said valve element being movable to a second position whereby said third passage is openly coupled to said inlet port through a portion of said first passage anD wherein said depending flange is brought into registry with said first passage shutting off direct communication to said outlet port through the remainder of said first passage.
Claim 3
Dependent Claim
276 words
A liquid filtering apparatus of the type adapted to accommodate a filter cartridge of the type having upper and lower apertures and containing a quantity of filtering material therein, the combination comprising: an upper housing and a lower housing removably attached together, said lower housing defining a chamber adapted to receive said cartridge therein, said chamber including means defining fluid passages therein communicating with the lower aperture of the said cartridge; said upper housing having fluid inlet and outlet ports, a first lateral passage extending through said upper housing between said inlet and outlet ports, an aperture for receiving said cartridge therein, a second fluid passage extending between said aperture and said first passage, said second passage extending normal to said first passage, a third fluid passage extending normal to said first passage and communicating said first passage with the chamber of said lower housing, said third passage intersecting said first passage intermediate said inlet port and said second passage; diverter valve means situated in said upper housing at the intersection of said first and third passages, said valve means including a cylindrical chamber, a cylindrical valve element slidably mounted in said chamber, said element having a depending arcuate flange at the lower end thereof a transverse passage through said element intermediate the ends thereof, selector means coupled to said element for selectively positioning said element in first and second positions, in said first position said transverse passage being aligned with said first passage and closing said third passage, in said second position said arcuate flange being positioned in said first passage closing the same, said third passage being thereby openly coupled to said inlet port.
Claim 4
Dependent Claim
276 words
A liquid filtering apparatus of the type adapted to accommodate a filter cartridge of the type having upper and lower apertures and containing a quantity of filtering material therein, the combination comprising: an upper housing and a lower housing removably attached together, said lower housing defining a chamber adapted to receive said cartridge therein, said chamber including means defining fluid passages therein communicating with the lower aperture of the said cartridge; said upper housing having fluid inlet and outlet ports, a first lateral passage extending through said upper housing between said inlet and outlet ports, an aperture for receiving said cartridge therein, a second fluid passage extending between said aperture and said first passage, said second passage extending normal to said first passage, a third fluid passage extending normal to said first passage and communicating said first passage with the chamber of said lower housing, said third passage intersecting said first passage intermediate said inlet port and said second passage; diverter valve means situated in said upper housing at the intersection of said first and third passages, said valve means including a cylindrical chamber, a cylindrical valve element slidably mounted in said chamber, said element having a depending arcuate flange at the lower end thereof a transverse passage through said element intermediate the ends thereof, selector means coupled to said element for selectively positioning said element in first and second positions, in said first position said transverse passage being aligned with said first passage and closing said third passage, in said second position said arcuate flange being positioned in said first passage closing the same, said third passage being thereby openly coupled to said inlet port.
Claim 5
Dependent Claim
36 words
The apparatus set forth in claim 2 wherein said selector means includes linkage means coupled to said valve element at the upper end thereof, said selector means being at a location remote from said valve housings.
Claim 6
Dependent Claim
25 words
The apparatus set forth in claim 2 further including guide means situated in said valve chamber and engaging said valve element to prevent rotation thereof.
References Cited (Backward Citations)
US2681147A
Cited
US2707051A
Cited
US3262570A
Cited
US3595397A
Cited
US3670892A
Cited
US3653514A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-06-25 | 1976-12-25 | 1977-06-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-06-25 | 1980-12-25 | 1981-06-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-06-25 | 1984-12-25 | 1985-06-26 | $7700.00 | Window Closed / Lapsed |