US4697989A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrodynamic peristaltic fluid transfer device and method
Assignee: Individual
•
Filing: 1984-10-11
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Granted: 1987-10-06
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Expires: 2004-10-11
Abstract
Abstract A housing-like body having at least one concavity provided with electrically conductive surface elements and an electrically conductive diaphragm disposed therein and forming one or more pocket-like chambers. The housing also includes an inlet and outlet aperture. The diaphragm surface element and to cooperate on passage of electric current to generate, in a predeterminable sequence, a plurality of magnetic fields of controllably changing polarities and intensities producing cycles of dynamic deflections of the diaphragm. The generated dynamic deflections of the diaphragm, the pocket-like chambers are peristaltically manipulated to move fluid from the region of the inlet aperture through which the fluid is drawn in, towards the region of the outlet aperture, through which the fluid is expelled.
Inventors
- 👤 Gena Perlov
- 👤 Samuel Tuchman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 16:23
CPC Classifications
F; F04; F04B; F04B35/00; F04B43/00; F04B43/02; F04B43/04; A; A61; A61M; A61M60/00; A61M60/10; A61M60/122; A61M60/196; A61M60/40; A61M60/424; A61M60/457; A61M60/462; A61M60/50; A61M60/508; A61M60/80; A61M60/835; A61M60/837; F04B43/12; F04B43/14; A61M60/126; A61M60/148; A61M60/855; A61M60/89; A61M60/892; A61M60/894
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
172 words
A device for fluid transfer comprising: a housing-like body with at least one wall having at least one concavity, at least one of said concavities being provided with electrically conductive surface elements; at least one electrically conductive diaphragm fixedly mounted in said body capable of forming, in conjunction with said concavity, one or moe pocket-like chambers; at least one inlet and one outlet aperture located at the periphery of said concavity; means for selectively applying an electric current to each of said electrically conductive elements and said electrically conducting diaphragm to generate, in a predeterminable sequence, a plurality of interacting electromagnetic fields of controllably changing polarities and intensities producing by a combination of forces of attraction and repulsion cycles of dynamic deflections of said diaphragm, whereby by means of said electrodynamically generated deflections of said diaphragm, said pocket-like chambers are peristaltically manipulated to move fluid from the region of said inlet aperture through which said fluid is drawn in, towards the region of said outlet aperture, through which said fluid is expelled.
Claim 2
Independent Claim
172 words
A device for fluid transfer comprising: a housing-like body with at least one wall having at least one concavity, at least one of said concavities being provided with electrically conductive surface elements; at least one electrically conductive diaphragm fixedly mounted in said body capable of forming, in conjunction with said concavity, one or moe pocket-like chambers; at least one inlet and one outlet aperture located at the periphery of said concavity; means for selectively applying an electric current to each of said electrically conductive elements and said electrically conducting diaphragm to generate, in a predeterminable sequence, a plurality of interacting electromagnetic fields of controllably changing polarities and intensities producing by a combination of forces of attraction and repulsion cycles of dynamic deflections of said diaphragm, whereby by means of said electrodynamically generated deflections of said diaphragm, said pocket-like chambers are peristaltically manipulated to move fluid from the region of said inlet aperture through which said fluid is drawn in, towards the region of said outlet aperture, through which said fluid is expelled.
Claim 3
Dependent Claim
75 words
The device as claimed in claim 1, wherein said housing-like body has at least two walls defining and delimiting at least one cavity, and wherein said diaphragm is capable of dividing said cavity into at least two pocket-like chambers, whereby said peristaltic manipulation of said pocket-like chambers results in the volume of at least one of said chambers being progressively increased, and the volume of at least one other of said chambers being progressively diminished.
Claim 4
Dependent Claim
16 words
The device as claimed in claim 1, wherein said diaphragm is made of elastically deformable material.
Claim 5
Dependent Claim
32 words
The device as claimed in claim 2, wherein said cavity is of a geometry determined by the interpenetration of at least two concave surfaces of revolution facing one another with their concavities.
Claim 6
Dependent Claim
15 words
The device as claimed in claim 4, wherein said surfaces of revolution are substantially spherical.
Claim 7
Dependent Claim
56 words
The device as claimed in claim 1, wherein said diaphragm in its free state, is saucer-shaped, being invertible from a first stable state in which the first of its surfaces is concave and the other surface is convex, to a second stable state in which said first surface is convex and said other surface is concave.
Claim 8
Dependent Claim
38 words
The device as claimed in claim 6, wherein the curvature of the convex surface of said diaphragm in either of said stable states is substantially identical with the curvatures of said concave surfaces of revolution of said cavity.
Claim 9
Dependent Claim
26 words
The device as claimed in claim 1, wherein said diaphragm is provided with a non-active rim portion whereby said diaphragm is mounted in said housing-like body.
Claim 10
Dependent Claim
58 words
The device as claimed in claim 1, wherein said electrically conductive surface elements of said cavity are in the form of arcuate belts consisting of an electrically conductive material and closely following the walls of said cavity, said belts being electrically insulated from one another, and each end portion of each of said belts having an electric terminal.
Claim 11
Dependent Claim
49 words
The device as claimed in claim 9 wherein said electrically conductive sections of said diaphragm is subdivided into zones, the number of which zones matches the number of said arcuate belts, the zones being of such size and shape as to at least cover their respectively opposite arcuate belts.
Claim 12
Dependent Claim
38 words
The device as claimed in claim 10, wherein, in the mounted state of said electrically conductive diaphragm, each end portion of each of said zones is in electrically conductive contact with contact surfaces provided in said housing-like body.
Claim 13
Dependent Claim
27 words
The device as claimed in claim 1, wherein at least a portion of at least one surface of said diaphragm is coated with an elastically resilient substance.
Claim 14
Dependent Claim
26 words
The device as claimed in claim 9, wherein at least some portions of at least one of said belts are coated with an elastically resilient substance.
Claim 15
Dependent Claim
26 words
The device as claimed in claim 9, wherein at least some portion of said diaphragm and of said belts are coated with an elastically resilient substance.
Claim 16
Independent Claim
159 words
A method for fluid transfer, comprising (a) providing a housing-like body with at least one concavity, at least one of which is provided with electrically conductive surface elements, at least one electrically conductive diaphragm capable of forming, in conjunction with said concavity, one or more pocket-like chambers, and at least one inlet and one outlet aperture; (b) applying in a predetermined sequence electric currents of selected polarities and intensities to said electrically conductive elements and said electrically conductive diaphragm, thereby generating a plurality of interacting magnetic fields of controllably changing polarities and intensities in such a way as to produce by a combination of forces of attraction and repulsion cycles of dynamic deflections of said diaphragm, by means of which electrodynamically generated deflections said pocket-like chambers are peristaltically manipulated to move fluid from the region of said inlet aperture through which said fluid is drawn in, towards the region of said outlet aperture, through which said fluid is expelled.
Claim 17
Independent Claim
159 words
A method for fluid transfer, comprising (a) providing a housing-like body with at least one concavity, at least one of which is provided with electrically conductive surface elements, at least one electrically conductive diaphragm capable of forming, in conjunction with said concavity, one or more pocket-like chambers, and at least one inlet and one outlet aperture; (b) applying in a predetermined sequence electric currents of selected polarities and intensities to said electrically conductive elements and said electrically conductive diaphragm, thereby generating a plurality of interacting magnetic fields of controllably changing polarities and intensities in such a way as to produce by a combination of forces of attraction and repulsion cycles of dynamic deflections of said diaphragm, by means of which electrodynamically generated deflections said pocket-like chambers are peristaltically manipulated to move fluid from the region of said inlet aperture through which said fluid is drawn in, towards the region of said outlet aperture, through which said fluid is expelled.
Claim 18
Dependent Claim
43 words
The method as claimed in claim 15, wherein the rate of fluid transfer of said device is a function of the physical dimensions of said cavity and regulatable by controlling the frequency of said polarity changes, and the intensity of said magnetic fields.
Claim 19
Dependent Claim
24 words
The method as claimed in claim 15, wherein the pressure attainable by said device is regulatable by controlling the intensity of said magnetic fields.
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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) | 1990-10-05 | 1991-04-06 | 1991-10-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-10-05 | 1995-04-06 | 1995-10-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-10-05 | 1999-04-06 | 1999-10-06 | $7700.00 | Window Closed / Lapsed |