Patent US5135873A successfully refreshed from Google Patents.
US5135873A
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Device and method for completing a fluidic circuit which employs a liquid expandable piece of bibulous material
Assignee: Siemens Healthcare Diagnostics GmbH Germany
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Filing: 1989-11-27
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Granted: 1992-08-04
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Expires: 2009-11-27
Abstract
Abstract Disclosed are methods and devices for permitting capillary flow of liquid between two or more pieces of bibulous material which, prior to actuation, are in a non-capillary flow relationship. In particular, the device is actuated and a capillary flow relationship is initiated between the two or more pieces of bibulous material in non-capillary flow relationship by utilizing a liquid expandable piece of bibulous material.
Inventors
- 👤 Rajesh D. Patel
- 👤 Nurith Kurn
- 👤 Martin Becker
- 👤 Edwin F. Ullman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 08:02
CPC Classifications
B; B01; B01L; B01L3/00; B01L3/50; B01L3/502; B01L3/5023; B01L2300/00; B01L2300/06; B01L2300/0672; B01L2300/08; B01L2300/0809; B01L2300/0825; B01L2400/00; B01L2400/04; B01L2400/0403; B01L2400/0406; B01L2400/06; B01L2400/0633; B01L2400/0661; B01L2400/0677; B01L2400/0683; Y; Y10; Y10T; Y10T436/00; Y10T436/25; Y10T436/2575
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
122 words
A device for permitting capillary flow of a liquid between two or more pieces of bibulous material which prior to actuation are in a non-capillary flow relationship to each other which comprises: (a) a housing have a compressible member confined therein; (b) a liquid expandable piece of bibulous material within said housing; and (c) two or more pieces of bibulous material, affixed to said compressible member, in a non-capillary flow relationship with each other and with said liquid expandable piece of bibulous material, said liquid expandable piece of bibulous material being positioned in said housing such that upon expansion said compressible member is compressed and said two or more pieces of bibulous material are brought into capillary flow relationship with each other.
Claim 2
Independent Claim
122 words
A device for permitting capillary flow of a liquid between two or more pieces of bibulous material which prior to actuation are in a non-capillary flow relationship to each other which comprises: (a) a housing have a compressible member confined therein; (b) a liquid expandable piece of bibulous material within said housing; and (c) two or more pieces of bibulous material, affixed to said compressible member, in a non-capillary flow relationship with each other and with said liquid expandable piece of bibulous material, said liquid expandable piece of bibulous material being positioned in said housing such that upon expansion said compressible member is compressed and said two or more pieces of bibulous material are brought into capillary flow relationship with each other.
Claim 3
Dependent Claim
20 words
The device according to claim 1 wherein said liquid expandable piece of bibulous material is affixed to said compressible member.
Claim 4
Dependent Claim
19 words
The device according to claim 1 wherein said liquid expandable piece of bibulous material is affixed to said housing.
Claim 5
Dependent Claim
51 words
The device according to claim 1 wherein said liquid expandable piece of bibulous material expands when wetted and thereby results in two of said pieces of bibulous material directly physically contacting one another in such a manner so as to achieve said capillary flow relationship between said two or more pieces.
Claim 6
Dependent Claim
49 words
The device according to claim 1 comprising two pieces of said bibulous material in a non-capillary flow relationship to each other wherein upon expansion of said liquid expandable piece of bibulous material, said two pieces of bibulous material directly physically contact each other thereby creating said capillary flow relationship.
Claim 7
Dependent Claim
58 words
The device according to claim 1 comprising three pieces of said bibulous material in a non-capillary flow relationship to each other wherein upon expansion of said liquid expandable piece of bibulous material, one of said three pieces of bibulous material directly physically contacts said remaining two other pieces thereby creating a capillary flow relationship among all three pieces.
Claim 8
Dependent Claim
18 words
The device according to claim 1 wherein said two or more pieces of bibulous material are paper strips.
Claim 9
Independent Claim
158 words
A method for creating a capillary flow relationship between two or more pieces of bibulous material which prior to actuation are in a non-capillary flow relationship to each other which comprises: (a) providing a device which comprises (i) a housing have a compressible member confined therein; and (ii) two or more pieces of bibulous material affixed to said compressible member in a non-capillary flow relationship to each other; and (iii) a liquid expandable piece of bibulous material within said housing which is in a non-capillary flow relationship with said two or more pieces of bibulous material and which is positioned in said housing such that upon expansion said compressible member is compressed and said two or more pieces of bibulous material are brought into a capillary flow relationship; (b) contacting said liquid expandable piece of bibulous material with a sufficient quantity of a liquid to wet said liquid expandable piece of bibulous material and cause it to expand.
Claim 10
Independent Claim
158 words
A method for creating a capillary flow relationship between two or more pieces of bibulous material which prior to actuation are in a non-capillary flow relationship to each other which comprises: (a) providing a device which comprises (i) a housing have a compressible member confined therein; and (ii) two or more pieces of bibulous material affixed to said compressible member in a non-capillary flow relationship to each other; and (iii) a liquid expandable piece of bibulous material within said housing which is in a non-capillary flow relationship with said two or more pieces of bibulous material and which is positioned in said housing such that upon expansion said compressible member is compressed and said two or more pieces of bibulous material are brought into a capillary flow relationship; (b) contacting said liquid expandable piece of bibulous material with a sufficient quantity of a liquid to wet said liquid expandable piece of bibulous material and cause it to expand.
Claim 11
Dependent Claim
20 words
The method according to claim 8 wherein said liquid expandable piece of bibulous material is affixed to said compressible member.
Claim 12
Dependent Claim
19 words
The method according to claim 8 wherein said liquid expandable piece of bibulous material is affixed to said housing.
Claim 13
Dependent Claim
47 words
The method according to claim 8 wherein two of said pieces of bibulous material directly physically contact one another in such a manner so as to achieve said capillary flow relationship between said two or more pieces when said liquid expandable piece is contacted with said liquid.
Claim 14
Dependent Claim
55 words
The method according to claim 8 wherein said device comprises two pieces of said bibulous material in a non-capillary flow relationship to each other wherein upon expansion of said liquid expandable piece of bibulous material, said two pieces of bibulous material directly physically contact each other thereby creating said capillary flow relationship between said pieces.
Claim 15
Dependent Claim
61 words
The method according to claim 8 wherein said device comprises three pieces of said bibulous material in a non-capillary flow relationship to each other wherein upon expansion of said liquid expandable piece of bibulous material, one of said three pieces of bibulous material directly physically contacts said remaining two other pieces thereby creating a capillary flow relationship among all three pieces.
Claim 16
Dependent Claim
17 words
The method according to claim 8 wherein said two or more pieces of bibulous material are paper.
Claim 17
Independent Claim
31 words
The method according to any one of claims 11, 12 and 13 wherein upon expansion of said liquid expandable piece of bibulous material, said compressible member compresses thereby permitting said contact.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-08-04 | 1996-02-03 | 1996-08-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-08-04 | 2000-02-03 | 2000-08-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-08-04 | 2004-02-03 | 2004-08-04 | $7700.00 | Window Closed / Lapsed |