Patent US3912637A successfully refreshed from Google Patents.
US3912637A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Exchange device
Assignee: Individual
•
Filing: 1971-06-04
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Granted: 1975-10-14
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Expires: 1991-06-04
Abstract
Abstract This disclosure relates to an exchange assembly which may be utilized to any purpose, but is preferably in the form of an exchange assembly which may be utilized for medical purposes such as an artifical kidney. A plurality of plates are arranged in stacked relation with each plate having a tubular membrane surrounding the same. The plates are clamped together by manifold members and manifold ports are formed through the stack for delivering a first fluid across the faces of the plates within the membrane. Other manifolds are secured in sealed relation to the edges of the stack and are arranged for distributing a second fluid between the membranes carried by the plates. The plates are of a special construction so as to facilitate uniform flow.
Inventors
- 👤 William G Esmond
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 22:47
CPC Classifications
B; B01; B01D; B01D63/00; B01D63/06; B01D2313/00; B01D2313/10; B01D2313/12
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
60 words
The exchange assembly of claim 1 wherein said housing includes a pair of first manifold plates, and means clamping together said first manifold plates with said stack of sleeve encased flow plates clamped therebetween with said first manifold plates engaging face surfaces of endmost ones of said sleeves, and said first circulating means being carried by said first manifold plates.
Claim 2
Dependent Claim
43 words
The exchange assembly of claim 2 wherein edges of said flow plates are provided with aligned notches forming manifold ports, and second fluid manifold plates sealed to opposite sides of said flow plate stack and having flow ports aligned with said manifold ports.
Claim 3
Dependent Claim
36 words
The exchange assembly of claim 3 wherein said flow plate edges are of a rigid configuration in communication with said manifold ports to facilitate uniform flow of said second fluid between said sleeve encased flow plates.
Claim 4
Dependent Claim
41 words
The exchange assembly of claim 2 wherein opposite end portions of said flow plAtes and said sleeves are perforated to form manifold ports through said stack, and flow channels in said flow plates communicating said manifold ports with said flow paths.
Claim 5
Dependent Claim
26 words
The exchange assembly of claim 5 wherein said flow channels include distribution and collection channels extending generally along and adjacent opposite edges of said flow plates.
Claim 6
Dependent Claim
19 words
The exchange assembly of claim 6 wherein said distribution and collection channels are defined by separately formed edge strips.
Claim 7
Dependent Claim
30 words
The exchange assembly of claim 6 wherein said flow path defining means are in the form of grooves extending transversely of said flow plates between said distribution and collection channels.
Claim 8
Dependent Claim
33 words
The exchange device of claim 8 wherein said grooves slope slightly relative to a normal to said distribution and collection channels, and said grooves on opposing flow plate surfaces being in crossing relation.
Claim 9
Dependent Claim
32 words
The exchange assembly of claim 6 wherein said flow path defining means are in the form of adjacently disposed upstanding projections, and there is a separator between each sleeve encased flow plate.
Claim 10
Dependent Claim
33 words
An exchange assembly in accordance with claim 1 wherein adjacent portions of adjacent ones of said sleeves are in face-to-face engagement, and said other flow paths are formed solely between adjacent sleeve portions.
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) | 1978-10-13 | 1979-04-14 | 1979-10-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-10-13 | 1983-04-14 | 1983-10-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-10-13 | 1987-04-14 | 1987-10-14 | $7700.00 | Window Closed / Lapsed |