US3738495A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Exchange device
Assignee: Individual
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Filing: 1971-04-13
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Granted: 1973-06-12
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Expires: 1991-04-13
Abstract
Abstract This disclosure relates to an exchange device, particularly one which may be utilized as an artificial kidney, which includes first and second sets of flow plates separated by a pleated membrane. The flow plates with the pleated membrane entwined therebetween, are combined to define a stack with edges of the flow plates of one set being exposed along one side of the stack and edges of the other flow plates being exposed along the opposite side of the stack. Suitable manifold plates are clamped to opposite sides of the stack in opposition to the exposed edges and sealed relative thereto for effecting the flow of two fluids through the stack with the fluids being separated by the pleated membrane.
Inventors
- 👤 W Esmond
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 11:25
CPC Classifications
B; B01; B01D; B01D63/00; B01D63/14
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
208 words
An exchange device comprising first and second sets of fLow plates arranged in alternating relation, means spacing and sealing adjacent plates from one another, all of the plates of said first set having a like exposed edge facing in one direction, each said exposed edge having an inlet opening and an outlet opening, all of the plates of said second set having a like exposed edge facing in a direction opposite from said one direction, each said set second plate edge having an inlet opening and an outlet opening, a first fluid distribution plate engaging edges of said plates in opposition to said first set plate edges, and a second fluid distribution plate engaging edges of said plates in opposition to said second set plate edges, each flow plate including an inlet channel in at least one face thereof extending from said inlet opening and a return channel opening into said outlet opening, said inlet and outlet channels being spaced from one another whereby flow between said inlet channel to said outlet channel is across a major portion of said flow plate face, one of said channels being of a U-shaped outline with flow in adjacent portions of said inlet and outlet channels being in the same direction.
Claim 2
Dependent Claim
208 words
An exchange device comprising first and second sets of fLow plates arranged in alternating relation, means spacing and sealing adjacent plates from one another, all of the plates of said first set having a like exposed edge facing in one direction, each said exposed edge having an inlet opening and an outlet opening, all of the plates of said second set having a like exposed edge facing in a direction opposite from said one direction, each said set second plate edge having an inlet opening and an outlet opening, a first fluid distribution plate engaging edges of said plates in opposition to said first set plate edges, and a second fluid distribution plate engaging edges of said plates in opposition to said second set plate edges, each flow plate including an inlet channel in at least one face thereof extending from said inlet opening and a return channel opening into said outlet opening, said inlet and outlet channels being spaced from one another whereby flow between said inlet channel to said outlet channel is across a major portion of said flow plate face, one of said channels being of a U-shaped outline with flow in adjacent portions of said inlet and outlet channels being in the same direction.
Claim 3
Dependent Claim
326 words
An exchange device comprising first and second sets of rectangular flow plates arranged in alternating relation, means spacing and sealing adjacent plates from one another, all of the plates of said first set having a like exposed edge facing in one direction, each said exposed edge having an inlet opening and an outlet opening, all of the plates of said second set having a like exposed edge facing in a direction opposite from said one direction, each said set second plate edge having an inlet opening and an outlet opening, a first fluid distribution plate engaging edges of said plates in opposition to said first set plate edges, and a second fluid distribution plate engaging edges of said plates in opposition to said second set plate edges, each flow plate including an inlet channel in at least one face thereof extending from said inlet opening and a return channel opening into said outlet opening, said inlet and outlet channels being spaced from one another along a major dimension of each flow plate whereby flow between said inlet channel and a cooperating outlet channel is across a major portion of said flow plate face, the surface of flow plates of one of said sets between said channels being planar and the surface of said flow plates of the other of said sets being contoured to form in combination with said spacing and sealing means to form first flow paths between said channels of each respective flow plate, and said spacing and sealing means being in the form of a readily deformable sheet material partially deformable under differential fluid pressure to partially deform to correspond to said flow plates contoured surfaces and to form in combination with said flow plate planar surfaces second flow paths, said first and second flow paths being separated by said sheet material, opposite surfaces of each flow plate being like contoured with there being similar flow on opposite sides of each flow plate.
Claim 4
Dependent Claim
326 words
An exchange device comprising first and second sets of rectangular flow plates arranged in alternating relation, means spacing and sealing adjacent plates from one another, all of the plates of said first set having a like exposed edge facing in one direction, each said exposed edge having an inlet opening and an outlet opening, all of the plates of said second set having a like exposed edge facing in a direction opposite from said one direction, each said set second plate edge having an inlet opening and an outlet opening, a first fluid distribution plate engaging edges of said plates in opposition to said first set plate edges, and a second fluid distribution plate engaging edges of said plates in opposition to said second set plate edges, each flow plate including an inlet channel in at least one face thereof extending from said inlet opening and a return channel opening into said outlet opening, said inlet and outlet channels being spaced from one another along a major dimension of each flow plate whereby flow between said inlet channel and a cooperating outlet channel is across a major portion of said flow plate face, the surface of flow plates of one of said sets between said channels being planar and the surface of said flow plates of the other of said sets being contoured to form in combination with said spacing and sealing means to form first flow paths between said channels of each respective flow plate, and said spacing and sealing means being in the form of a readily deformable sheet material partially deformable under differential fluid pressure to partially deform to correspond to said flow plates contoured surfaces and to form in combination with said flow plate planar surfaces second flow paths, said first and second flow paths being separated by said sheet material, opposite surfaces of each flow plate being like contoured with there being similar flow on opposite sides of each flow plate.
Claim 5
Dependent Claim
30 words
The exchange device of claim 2 wherein said flow plate contoured surface is in the form of a plurality of adjacent upstanding projections of the generally conical and pyramidal type.
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) | 1976-06-11 | 1976-12-11 | 1977-06-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-06-11 | 1980-12-11 | 1981-06-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-06-11 | 1984-12-11 | 1985-06-12 | $7700.00 | Window Closed / Lapsed |