US3662928A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid sampling device
Assignee: Individual
•
Filing: 1970-04-06
•
Granted: 1972-05-16
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Expires: 1990-04-06
Abstract
Abstract A device for the collection, storage or transfer of fluids comprising two thin, metallic inherently stable shells each of like shallow dome-shape contour joined at their basal abutting edges to define in internal cavity isolated from the atmosphere, at least one of said shells having an inherent spring-like flexibility such that under the application of an externally applied force it is displaceable without rupture from the cavity defining relation of maximum volume to a second stable position of an inverse uniformly dome-shaped contour with the other of said shells in cavity defining relation of minimum volume, and reversely, and passage means integral with at least one of said shells for establishing fluid communication with said internal cavity.
Inventors
- 👤 Louis A Pogorski
- 👤 Ernest M Reimer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 10:51
CPC Classifications
G; G01; G01N; G01N1/00; G01N1/02; G01N1/10; G01N1/14; G01N1/22; G01N1/24
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
135 words
A device for the collection, storage or transfer of fluids comprising two thin, inherently stable walls each of like shallow dome-shaped contour joined at their basal abutting edges to define an internal cavity of maximum specified Volume isolated from the atmosphere, each of said walls having an inherent spring-like flexibility such that under the application of externally applied forces each wall is displaceable without rupture from a first stable position with the other of said walls in cavity defining relation of maximum specified volume through an over center position to a second stable position of an inverse uniformly dome-shaped contour with the other of said walls in cavity defining relation of minimum specified volume, and reversely, and passage means integral with at least one of said walls for establishing fluid communication with said internal cavity.
Claim 2
Independent Claim
135 words
A device for the collection, storage or transfer of fluids comprising two thin, inherently stable walls each of like shallow dome-shaped contour joined at their basal abutting edges to define an internal cavity of maximum specified Volume isolated from the atmosphere, each of said walls having an inherent spring-like flexibility such that under the application of externally applied forces each wall is displaceable without rupture from a first stable position with the other of said walls in cavity defining relation of maximum specified volume through an over center position to a second stable position of an inverse uniformly dome-shaped contour with the other of said walls in cavity defining relation of minimum specified volume, and reversely, and passage means integral with at least one of said walls for establishing fluid communication with said internal cavity.
Claim 3
Dependent Claim
29 words
A device according to claim 1 in which said walls in said stable positions in cavity defining relation of minimum specified volume abut each other substantially throughout their areas.
Claim 4
Dependent Claim
18 words
A device according to claim 2 in which the basal abutting edges of said dome-shaped walls are circular.
Claim 5
Dependent Claim
29 words
A device according to claim 3 in which the value of the basal diameter to the maximum separation of the apices of said dome-shaped walls is greater than 4.
Claim 6
Dependent Claim
17 words
A device according to claim 4 in which said dome-shaped walls have a common axis of symmetry.
Claim 7
Dependent Claim
21 words
A device according to claim 4 in which said dome-shaped walls are each comprised of a thin sheet of stainless steel.
Claim 8
Dependent Claim
27 words
A device according to claim 6 in which the thickness of each sheet of stainless steel is less than 1 times the diameter of said dome-shaped walls.
Claim 9
Dependent Claim
43 words
A device according to claim 1 in which said passage means for establishing fluid communication with said internal cavity comprises a capillary tube extending through at least one of said dome-shaped walls and having a portion thereof extending outwardly beyond said dome-shaped wall.
Claim 10
Dependent Claim
45 words
A device according to claim 1 in which said passage means for establishing fluid communication with said internal cavity comprises a capillary tube arranged to extend between the basal abutting edges of said dome-shaped walls and having a portion thereof extending outwardly beyond said edges.
Claim 11
Dependent Claim
30 words
A device according to claim 8 in which said capillary tube is deformable throughout a portion of its length whereby said internal cavity can be hermetically sealed from the atmosphere.
Claim 12
Dependent Claim
33 words
A device according to claim 1 in which said passage means for establishing fluid communication with said internal cavity is defined by an aperture extending through at least one of said dome-shaped walls.
Claim 13
Dependent Claim
43 words
A device according to claim 1 in which the total minimum specified volume of said internal cavity and said passage means is of the order of 0.5 percent of the total maximum specified volume of said internal cavity and passage means, or less.
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) | 1975-05-16 | 1975-11-15 | 1976-05-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-16 | 1979-11-15 | 1980-05-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-16 | 1983-11-15 | 1984-05-16 | $7700.00 | Window Closed / Lapsed |