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US3793111A Expired / Lapsed US ⏱️ 0.0 years remaining

Membrane package construction

Assignee: General Electric Co
•
Filing: 1972-03-20
•
Granted: 1974-02-19
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Expires: 1992-03-20
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Abstract

Abstract An improved process for the preparation of a packaged membrane device is described whereby alternating diagonally-located confined areas of fluid sealant are prepared on each screen separator as it is incorporated in a stack between spaced membranes disposed in substantially parallel surface-to-surface array. After the package components are stacked, the sealant areas cured and the assembly sealed around the periphery, holes are drilled into the package in line with the areas of confined cured sealant to develop the manifold system and define a first group of flow volumes and a second group of flow volumes alternating between the first group. The completed structure is essentially the structure described and claimed in U.S. Pat. No. 3,564,819 - Neulander et al.

Inventors

  • 👤 A Judkins

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-26 21:05
CPC Classifications
B; B01; B01D; B01D53/00; B01D53/22; B01D63/00; B01D63/08; B01D63/082; B01D63/084; B01D2313/00; B01D2313/04; B01D2313/041; B01D2313/042; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1052; Y10T156/1056; Y10T156/1057; Y10T156/1089; Y10T156/1092

Claims Analysis

Total Claims: 3
Claim 1
Independent Claim 15 words
The improvement recited in claim 1 wherein silicone rubber is employed as the damming material.
Claim 2
Dependent Claim 33 words
The improvement recited in claiM 1 wherein during screen preparation fluid sealant is deposited on each screen both within the dammed areas and as a continuous bead adjacent the perimeter of each screen.
Claim 3
Dependent Claim 25 words
The improvement recited in claim 1 wherein the material employed for the preparation of the damming means is different from the fluid sealant material employed.

References Cited (Backward Citations)

US3354618A Cited
US3416985A Cited
US3564819A Cited
US3661721A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1977-02-18 1977-08-20 1978-02-19 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1981-02-18 1981-08-20 1982-02-19 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1985-02-18 1985-08-20 1986-02-19 $7700.00 Window Closed / Lapsed

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