Patent US3631654A successfully refreshed from Google Patents.
US3631654A
Expired / Lapsed
US
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Gas purge device
Assignee: Baxter International Inc
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Filing: 1968-10-03
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Granted: 1972-01-04
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Expires: 1988-10-03
Abstract
Abstract Apparatus is provided for separating gases and liquids and particularly for removing and venting gases contained in liquids. The separation is obtained by interposing a filter which is wetted by liquid across the liquid outlet line; this filter passes the liquid but repels the gas. Another portion of the same filter is liquid repellent, and is interposed across a gas outlet line; this passes the gas to a vent, and repels the liquid.
Inventors
- 👤 Phyllis Riely
- 👤 Robert Skyles
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:41
CPC Classifications
B; B01; B01D; B01D46/00; B01D46/0002; B01D46/0012; A; A61; A61M; A61M5/00; A61M5/14; A61M5/165; A61M5/36; B01D19/00; B01D19/0031; B01D46/0027; B01D46/10; A61M39/00; A61M39/10; A61M2039/1077; A61M2205/00; A61M2205/75; A61M2205/7527; A61M2205/7536; A61M5/38; A61M5/385
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
22 words
A gas purge device according to claim 1, wherein the filter element has an average pore size less than about 0.3 micron.
Claim 2
Dependent Claim
21 words
A gas purge device according to claim 1, wherein the housing and associated parts of the device are made of plastic.
Claim 3
Dependent Claim
21 words
A gas purge device according to claim 3, wherein the plastic parts are bonded or fused together in a one-piece construction.
Claim 4
Dependent Claim
47 words
A gas purge device according to claim 1, in which the housing is in the form of a Y, having one inlet and two outlet passages in respective legs, and the filter element extends across the junction of the Y, and across two leg outlet passages thereof.
Claim 5
Dependent Claim
29 words
A gas purge device in accordance with claim 1, in which the housing has a single in line through passage and the gas outlet is in one wall thereof.
Claim 6
Dependent Claim
33 words
A gas purge device in accordance with claim 6, in which the gas outlets are distributed all around the housing, and the liquid-repellent part of the filter likewise extends all around the housing.
Claim 7
Dependent Claim
31 words
A gas purge device in accordance with claim 7, in which the liquid-wetted and liquid-repellent parts of the filter material are arranged in a separated and spaced relationship in the housing.
Claim 8
Dependent Claim
40 words
A gas purge device in accordance with claim 7, in which the filter material is in the form of a thimble, having peripheral liquid-repellent portions and a liquid-wetted tip portion downstream thereof and beyond the gas outlet in the housing.
Claim 9
Dependent Claim
19 words
A gas purge device according to claim 1, wherein the volume of the housing is less than 1 cc.
Claim 10
Dependent Claim
15 words
A gas purge device according to claim 1, wherein the housing is of rigid material.
Claim 11
Dependent Claim
15 words
A gas purge device according to claim 1, wherein the housing is of transparent material.
Claim 12
Dependent Claim
43 words
A gas purge device according to claim 1, wherein the filter element has a cylindrical part with the liquid-repellent parts therein and has a liquid-wetted part extending across the open interior of the cylinder downstream of the liquid-repellent portions, beyond the gas outlet.
Claim 13
Dependent Claim
17 words
A gas purge device according to claim 1, wherein the filter material is a microporous membrane filter.
Claim 14
Dependent Claim
24 words
A gas purge device according to claim 1, wherein the filter material comprises a porous substrate coated or impregnated with a microporous fibrous layer.
Claim 15
Dependent Claim
19 words
A gas purge device according to claim 1, wherein the filter material is supported on a foraminous sheet support.
Claim 16
Dependent Claim
31 words
A gas purge device according to claim 1 in which the filter material is in the form of a disc, one segment thereof being hydrophobic and the other segment being hydrophilic.
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) | 1975-01-03 | 1975-07-05 | 1976-01-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-03 | 1979-07-05 | 1980-01-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-03 | 1983-07-05 | 1984-01-04 | $7700.00 | Window Closed / Lapsed |