US3572507A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control device for selective delivery of a fluid under pressure
Assignee: Individual
•
Filing: 1969-05-12
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Granted: 1971-03-30
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Expires: 1989-05-12
Abstract
Abstract The fluid control device functions to deliver fluid under pressure to a selected one of a pair of fluid processing units. The control device includes a movable piston which is displaceable when the pressure of the fluid flowing through a selected one of the processing units exceeds a predetermined pressure. When the displacement of the piston occurs, the fluid control device directs the fluid under pressure to be processed into the second of the pair of fluid processing units while closing off the first fluid processing unit.
Inventors
- 👤 John Juskevic
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 19:03
CPC Classifications
B; B01; B01D; B01D35/00; B01D35/12
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
422 words
A control device for selective delivery of a fluid under pressure to one of at least a pair of filter units which process the fluid, the processing of the fluid in any one of the filter units over a period of time increasing the pressure drop of the fluid passing through the filter unit, the control device comprising: a fluidtight container; a piston within said fluidtight container for dividing said container into first aNd second fluid chambers; first port defining means in said first fluid chamber for defining both an exit port for the fluid and two connecting ports for separate connection with exit ports of respective ones of the exit ports of the two fluid processing units; second port defining means in said second fluid chamber for defining both an entrance port for the fluid and two connecting ports for separate connection with the entrance ports of respective ones of the entrance ports of the two fluid processing units; means for slidably receiving said piston member between said first and said second port defining means in each of said chambers, said slidable movement being in response to differences in fluid pressure in said two chambers; means for simultaneously sealing a connecting port in both said first and said second fluid chambers which connect respectively to said exit port and said entrance port of one of the fluid processing units; means for locating said sealing means within said fluidtight container for permitting the passage of the fluid into said second fluid chamber, into said one unsealed port of the entrance of the processing unit, through the processing unit, through the exit port of the processing unit and through the other unsealed port into said first chamber to be discharged therefrom through said first chamber''s exit port; operating means selectively actuatable for changing the position of said locating means to seal off the previously opened ports of said first and said second chambers and open the previously sealed ports of said first and said second chambers thereby permitting the fluid to flow through the second processing unit and not the first processing unit; and means responsive to a predetermined displacement of said piston within said fluidtight container in response to a pressure differential being established between said first and said second chambers for selectively actuating said operating means whereby said locating means changes the position of said sealing means in each of said chambers and the fluid passing through the control device is now directed for processing to the second fluid processing unit.
Claim 2
Dependent Claim
422 words
A control device for selective delivery of a fluid under pressure to one of at least a pair of filter units which process the fluid, the processing of the fluid in any one of the filter units over a period of time increasing the pressure drop of the fluid passing through the filter unit, the control device comprising: a fluidtight container; a piston within said fluidtight container for dividing said container into first aNd second fluid chambers; first port defining means in said first fluid chamber for defining both an exit port for the fluid and two connecting ports for separate connection with exit ports of respective ones of the exit ports of the two fluid processing units; second port defining means in said second fluid chamber for defining both an entrance port for the fluid and two connecting ports for separate connection with the entrance ports of respective ones of the entrance ports of the two fluid processing units; means for slidably receiving said piston member between said first and said second port defining means in each of said chambers, said slidable movement being in response to differences in fluid pressure in said two chambers; means for simultaneously sealing a connecting port in both said first and said second fluid chambers which connect respectively to said exit port and said entrance port of one of the fluid processing units; means for locating said sealing means within said fluidtight container for permitting the passage of the fluid into said second fluid chamber, into said one unsealed port of the entrance of the processing unit, through the processing unit, through the exit port of the processing unit and through the other unsealed port into said first chamber to be discharged therefrom through said first chamber''s exit port; operating means selectively actuatable for changing the position of said locating means to seal off the previously opened ports of said first and said second chambers and open the previously sealed ports of said first and said second chambers thereby permitting the fluid to flow through the second processing unit and not the first processing unit; and means responsive to a predetermined displacement of said piston within said fluidtight container in response to a pressure differential being established between said first and said second chambers for selectively actuating said operating means whereby said locating means changes the position of said sealing means in each of said chambers and the fluid passing through the control device is now directed for processing to the second fluid processing unit.
Claim 3
Dependent Claim
67 words
The control device for the selective delivery of fluid under pressure to at least one of a pair of filter units which process the fluid as defined in claim 1 wherein: said first and said second port defining means locate said entrance and said exit ports to each of the respective ones of the processing units in substantial alignment between said first and said second fluid chambers.
Claim 4
Dependent Claim
80 words
The control device for the selective delivery of fluid under pressure to at least one of a pair of filter units which process the fluid as defined in claim 2 wherein: said fluidtight container has a cylindrical interior; and wherein said entrance and said exit ports defined in each of said chambers by said first and said second port defining means are both substantially aligned with and arcuately spaced from one another in both said first and said second chambers.
Claim 5
Dependent Claim
106 words
The control device for the selective delivery of fluid under pressure to at least one of a pair of filter units which process the fluid as defined in claim 3 wherein: said means for slidably mounting said piston comprises a central shaft extending along the axis of said cylindrical interior of said fluid tight container; means defining a central axil bore through said piston sized to sealingly encircle a portion of said shaft; and a retainer means for preventing movement of said piston to a position which would seal any of said ports defined by said second port defining means in said second said fluidtight chamber.
Claim 6
Dependent Claim
107 words
The control device for the selective delivery of fluid under pressure to at least one of a pair of filter units which process the fluid as defined in claim 4 wherein: said central shaft extends from the bottom of said container to the top of said container with the shaft''s axis in substantial alignment with the axis of said cylindrical contaIner; wherein the bottom end of said shaft is seated for rotation in the bottom wall of said second fluid chamber and wherein the top end of said shaft is in operative association with said operating means actuatable for selectively changing the location of said sealing means.
Claim 7
Dependent Claim
164 words
The control device for the selective delivery of fluid under pressure to at least one of a pair of filter units which process the fluid as defined in claim 5 wherein: said means for simultaneously sealing a connecting port in both said first and said second fluid chambers connected respectively to said exit and entrance ports of one of the fluid processing units comprises; a pair of aligned flat surfaces formed on said central shaft at positions vertically located in both said upper and lower chambers; and a pair of sealing elements, one associated with each pair of flat surfaces on said shaft, each of said sealing elements both being bifurcated at one end to permit them to partially enclose said associated flat surfaces of said shaft and being arcuately shaped at the other end to form a surface both conforming to the shape of the interior wall of said chamber and being larger than said connecting ports formed in each of said chambers.
Claim 8
Dependent Claim
90 words
The control device for the selective delivery of fluid under pressure to at least one of a pair of filter units which process the fluid as defined in claim 6 wherein: each of said sealing members has a biasing element acting between said member and said central shaft for biasing said other end of said sealing member into engagement with said connecting ports, and wherein the other end of each of said sealing members has a sealing material associated therewith for positively sealing said connecting port it is associated with.
Claim 9
Dependent Claim
161 words
The control device for the selective delivery of fluid under pressure to at least one of a pair of filter units which process the fluid as defined in claim 7 wherein: said locating means for locating said sealing means within said fluidtight container comprises; a locating surface on said portion of said shaft extending outwardly from the top of said fluidtight container, said locating surface being aligned with said flats on said shaft, a movable member associated with said locating surfaces on said extending portion of said shaft; locating recesses in said top surface of said container, each recess being aligned with a pair of said connecting ports for a respective one of the fluid processing units in said upper and said lower chambers; and means interconnecting said shaft and said movable member for positioning said movable member in one of said recesses to align said sealing members with one of said pair of connecting ports for a fluid processing unit.
Claim 10
Dependent Claim
159 words
The control device for the selective delivery of fluid under pressure to at least one of a pair of filter units which process the fluid as defined in claim 8 wherein: said means for interconnecting said shaft and movable member comprises: a circular shaped, spring holding member having an axil opening therethrough positioned adjacent and movable with said locating surface on said portion of said shaft extending outwardly from the top of said fluidtight container, said spring holding member having a circumferential groove there around, and means both in part secured to said movable member and extending into said recess of said spring holding member and in part movable outwardly with respect to said movable member, said outward moving member supporting thereon a detent which enters one of said recesses of the top portion of said fluidtight container thereby to position said sealing means associated with an associated pair of connecting ports to one of said fluid processing units.
Claim 11
Dependent Claim
166 words
The control device for the selective delivery of fluid under pressure to at least one of a pair of filter units which process the fluid as defined in claim 9 wherein: said operating means comprises a U-shaped member partially enclosing said circumferential groove around said spring holding meMber; said U-shaped member being positioned in said spring holding member in such a position as to receive therewithin the portion of said means secured to said movable member and extending into said circumferential groove; and a coil spring enclosed within and encircling said circumferential groove with the ends of said spring abutting said U-shaped member to act as stop members; said operating means being moved to an operative position by resetting of said outwardly movable member in a different one of said recesses associated with said top of said container which causes compression of said spring by said means extending into said circumferential groove while said means for selectively actuating said operating means is in an unactuated state.
Claim 12
Dependent Claim
184 words
The control device for selective delivery of fluid under pressure to at least one of a pair of filter units which process the fluid as defined in claim 10 wherein: said means for selectively actuating said operating means comprises: a stationary member mounted in said fluidtight container above said piston and below said first port defining means, said stationary member having (1) a plurality of opening therethrough so that the fluid pressure of said first chamber may be applied to one side of said piston, (2) an axil opening therethrough to permit passage of said central shaft therethrough and (3) a downwardly extending flange encircling said shaft, said flange having at least four ball receiving openings therein; means on said central shaft adjacent said downwardly extending flange encircling said shaft defining at least four ball receiving recesses therein; a pair of balls received in opposed recesses and openings respectively in said shaft and said flange; and means associated with said piston and extending upwardly to encircle said balls held in said openings and said shaft recesses when said piston is in a normal position.
Claim 13
Dependent Claim
37 words
The control device for selective delivery of fluid under pressure to at least one of a pair of filter units which process the fluid as defined in claim 11 wherein said fluid processing units are oil filters.
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) | 1974-03-29 | 1974-09-28 | 1975-03-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-03-29 | 1978-09-28 | 1979-03-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-03-29 | 1982-09-28 | 1983-03-30 | $7700.00 | Window Closed / Lapsed |