Patent US3852196A successfully refreshed from Google Patents.
US3852196A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid treatment system
Assignee: Vital Research and Development Inc
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Filing: 1972-09-08
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Granted: 1974-12-03
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Expires: 1992-09-08
Abstract
Abstract A filter cartridge unit includes a body of filtering media enclosed within a container which is releasably connected to a projecting tubular portion of a valve body adapted to be installed within a fluid line such as a water supply line. A cylindrical valve chamber extends into the valve body through the tubular portion and receives a spool-like valve member. When the filter unit is connected or coupled to the valve body, concentric tubes projecting from the filter container extend into the valve chamber and automatically shift the valve member against a spring bias to a position where fluid flows from the inlet passage of the valve body through the valve member and is by-passed by the concentric tubes through the filter unit to the outlet passage within the valve body. When the filter unit is disconnected and removed, the valve member automatically shifts to a second position which enables the fluid to flow directly from the inlet passage through the valve chamber to the outlet passage.
Inventors
- 👤 R Szpur
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 20:13
CPC Classifications
B; B01; B01D; B01D35/00; B01D35/14; B01D35/153
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
412 words
A fluid treatment system comprising a valve body including means defining an inlet passage and an outlet passage adapted to receive a fluid, said valve body having an elongated internal cylindrical valve chamber intersecting said inlet and outlet passages, said valve chamber having a first inner end portion and a second outer end portion, a cylindrical valve member slidably supported within said valve chamber for axial movement between a first position adjacent said inner end portion and a second position adjacent said outer end portion, said valve member including a first cylindrical inner portion and a second cylindrical outer portion disposed in axially spaced relation and each having an outer diameter conforming to the diameter of said valve chamber, a circumferentially extending sealing member on each of said inner and outer portions of said valve member and forming a sliding fluid-tight seal with said body, means defining a radially extending fluid passage within said valve member between said inner and outer portions of said valve member, means defining a passage extending axially through said second outer portion of said valve member to intersect said radially extending passage, means defining a bleed passage within said valve body for connecting said inlet passage to said second inner end portion of said valve chamber, a fluid-tight container enclosing a fluid treating media, means for removably connecting said container to said valve body and including a cylindrical outer tube having an outer diameter substantially the same as the inner diameter of said valve chamber and an inner tube spaced concentrically within said outer tube and having an end portion positioned to engage said second outer portion of said valve member for removably connecting said end portion of said inner tube to said valve member second outer portion, said passages within said valve member cooperating with said inner and outer tubes to by-pass fluid from said inlet passage through the treating media within said container and then to said outlet passage in response to said valve member being in said first position, said valve member constructed and arranged to block the flow of fluid from said inlet passage through said outer end of said valve chamber in response to said valve member being in said second position when said container is removed, and said valve member being movable between said first and second positions in response to axial movement thereof by said inner and outer tubes being inserted into said outer end portion of said valve chamber.
Claim 2
Dependent Claim
412 words
A fluid treatment system comprising a valve body including means defining an inlet passage and an outlet passage adapted to receive a fluid, said valve body having an elongated internal cylindrical valve chamber intersecting said inlet and outlet passages, said valve chamber having a first inner end portion and a second outer end portion, a cylindrical valve member slidably supported within said valve chamber for axial movement between a first position adjacent said inner end portion and a second position adjacent said outer end portion, said valve member including a first cylindrical inner portion and a second cylindrical outer portion disposed in axially spaced relation and each having an outer diameter conforming to the diameter of said valve chamber, a circumferentially extending sealing member on each of said inner and outer portions of said valve member and forming a sliding fluid-tight seal with said body, means defining a radially extending fluid passage within said valve member between said inner and outer portions of said valve member, means defining a passage extending axially through said second outer portion of said valve member to intersect said radially extending passage, means defining a bleed passage within said valve body for connecting said inlet passage to said second inner end portion of said valve chamber, a fluid-tight container enclosing a fluid treating media, means for removably connecting said container to said valve body and including a cylindrical outer tube having an outer diameter substantially the same as the inner diameter of said valve chamber and an inner tube spaced concentrically within said outer tube and having an end portion positioned to engage said second outer portion of said valve member for removably connecting said end portion of said inner tube to said valve member second outer portion, said passages within said valve member cooperating with said inner and outer tubes to by-pass fluid from said inlet passage through the treating media within said container and then to said outlet passage in response to said valve member being in said first position, said valve member constructed and arranged to block the flow of fluid from said inlet passage through said outer end of said valve chamber in response to said valve member being in said second position when said container is removed, and said valve member being movable between said first and second positions in response to axial movement thereof by said inner and outer tubes being inserted into said outer end portion of said valve chamber.
Claim 3
Dependent Claim
103 words
A fluid treatment system as defined in claim 1 including an elongated guide member extending axially from said inner portion of said valve member and movable therewith, means forming an outwardly projecting shoulder on said guide member, means on said valve body forming a stop surface for engagement by said shoulder to limit the axial movement of said valve member at said second position, a tubular member projecting outwardly from said inner end portion of said valve chamber on a side opposite to said coNtainer and surrounding said guide member, and a compression spring extending between said guide member and said tubular member.
Claim 4
Dependent Claim
53 words
A fluid treatment system as defined in claim 1 wherein said treating media comprises a generally solid body, said inner tube extends through said body of treating media, and means on said inner tube for supporting said body of treating media with the lower surface thereof spaced above the bottom of said container.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-12-02 | 1978-06-03 | 1978-12-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-12-02 | 1982-06-03 | 1982-12-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-12-02 | 1986-06-03 | 1986-12-03 | $7700.00 | Window Closed / Lapsed |