US3630644A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid pump and actuation thereof
Assignee: Individual
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Filing: 1969-06-23
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Granted: 1971-12-28
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Expires: 1989-06-23
Abstract
Abstract The invention disclosed resides in a pump operating on what are generally thought of as ''''peristaltic'''' lines, and in which a flexible-walled duct is the pumping chamber and is surrounded by a cell structure into and out of which a flow of an actuating pressure-fluid is pulsatingly caused by some external means. The duct may have check valves in its entry and exit, or it may be self-valving by closing up completely when contracted, such closing being progressive from the upstream to the downstream end.
Inventors
- 👤 Brian J Bellhouse
- 👤 Francis H Bellhouse
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 04:25
CPC Classifications
F; F04; F04B; F04B43/00; F04B43/08; F04B43/088; F04B43/10
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
101 words
A pump comprising a flexible-walled duct of which the wall constitutes the inner wall of a cell structure having a plurality of cells surrounding the duct, and means pulsatingly to introduce into and relieve from the cell structure an actuating pressure fluid, the combination of duct and cell structure being such that distension of the latter causes collapse of the former, said cells of the cell structure being interconnected through flow restriction means in a sequential manner from a pressure fluid input connection so that the duct is collapsed in a correspondingly sequential manner from its upstream to its downstream end.
Claim 2
Dependent Claim
101 words
A pump comprising a flexible-walled duct of which the wall constitutes the inner wall of a cell structure having a plurality of cells surrounding the duct, and means pulsatingly to introduce into and relieve from the cell structure an actuating pressure fluid, the combination of duct and cell structure being such that distension of the latter causes collapse of the former, said cells of the cell structure being interconnected through flow restriction means in a sequential manner from a pressure fluid input connection so that the duct is collapsed in a correspondingly sequential manner from its upstream to its downstream end.
Claim 3
Dependent Claim
25 words
Pump according to claim 1, in which the duct wall is so dimensioned perimetrically that when fully collapsed it constitutes a closure of the duct.
Claim 4
Dependent Claim
48 words
Pump according to claim 1, in which the duct is provided with a first check valve upstream and a second check valve downstream of the location of the cell structure the valves being in series so as to prevent flow in one sense of direction through the duct.
Claim 5
Dependent Claim
28 words
Pump according to claim 1, in which cells are interconnected by duct means within which is provided a flow restriction between one cell and the next in sequence.
Claim 6
Dependent Claim
27 words
Pump according to claim 1, in which the cells are those of porous spongy material contained between the said duct wall and a substantially nondistendable outer wall.
Claim 7
Dependent Claim
57 words
Pump according to claim 1, further including a substantially nondistendable outer wall surrounding said duct wall and sealed thereto at upstream and downstream ends thereof and at least two connections spaced symmetrically about the duct axis being provided between said duct wall and the outer wall along lines directed in the direction of flow in the duct.
Claim 8
Dependent Claim
60 words
Pump according to claim 1, further including a substantially nondistendable outer wall surrounding said duct wall and sealed thereto at upstream and downstream ends thereof and at least one flexible impervious diaphragm sealed peripherally to the interior of the outer wall and to the exterior of the duct wall and defining one cell or cell group from its sequential neighbor.
Claim 9
Dependent Claim
33 words
Pump according to claim 7, in which said diaphragm has a sufficient radial dimension when extended, to enable the duct wall to collapse so completely that the interior duct wall surfaces become contiguous.
Claim 10
Dependent Claim
23 words
A pump according to claim 1, of which the duct is convergent in cross section in the sense of direction of flow therethrough.
Claim 11
Dependent Claim
14 words
A pump according to claim 1, of which the external cross-sectional shape is rectangular.
Claim 12
Dependent Claim
16 words
A pump according to claim 10, comprising a plurality of units assembled with external rectangular shape.
Claim 13
Dependent Claim
133 words
A pump comprising a substantially nondistendable outer wall of substantially cylindrical form, a flexible-walled duct extending through the length and from the ends of the outer wall and enclosed thereby, fluidtight attachments between the ends of the outer wall and the duct wall, at least two attachments between said two walls along symmetrically spaced longitudinal lines from end to end of said outer wall, the circumferential length of the inner wall being greater than the perimetric length of the outer wall at a corresponding cross section, at least one annular impervious flexible connection extending between the outer and inner walls to form a common end wall of two adjacent cell groups defined by the walls, and means for admitting a pulsating supply of actuating pressure fluid into the cell structure between the walls.
Claim 14
Dependent Claim
133 words
A pump comprising a substantially nondistendable outer wall of substantially cylindrical form, a flexible-walled duct extending through the length and from the ends of the outer wall and enclosed thereby, fluidtight attachments between the ends of the outer wall and the duct wall, at least two attachments between said two walls along symmetrically spaced longitudinal lines from end to end of said outer wall, the circumferential length of the inner wall being greater than the perimetric length of the outer wall at a corresponding cross section, at least one annular impervious flexible connection extending between the outer and inner walls to form a common end wall of two adjacent cell groups defined by the walls, and means for admitting a pulsating supply of actuating pressure fluid into the cell structure between the walls.
Claim 15
Dependent Claim
52 words
A pump as claimed in claim 12, in which cell groups arranged sequentially along the duct wall are supplied with pulsating pressure fluid from the upstream end of the pump through flow restriction such as to delay flow into each sequential cell group from the most upstream to the most downstream group.
Claim 16
Dependent Claim
23 words
A pump according to claim 12, having three longitudinal lines of attachment and two flexible connections thus defining three groups of three cells.
Claim 17
Dependent Claim
133 words
A pump comprising a flexible-walled duct of which the wall constitutes the inner wall of a cell structure surrounding the duct, and means pulsatingly to introduce into and relieve from the cell structure an actuating pressure fluid, the combination of duct and cell structure being such that distention of the latter causes collapse of the former, said cell structure having an inlet pipe connection at its upstream end and an outlet pipe connection at its downstream end, in combination with a continuous external source of actuating pressure fluid and two valves arranged and operated to open and close alternatively to admit pressure fluid to the cell structure at the upstream end thereof and release it from the downstream end, said valves being solenoid operated in accordance with a square-wave form of electrical input.
Claim 18
Dependent Claim
133 words
A pump comprising a flexible-walled duct of which the wall constitutes the inner wall of a cell structure surrounding the duct, and means pulsatingly to introduce into and relieve from the cell structure an actuating pressure fluid, the combination of duct and cell structure being such that distention of the latter causes collapse of the former, said cell structure having an inlet pipe connection at its upstream end and an outlet pipe connection at its downstream end, in combination with a continuous external source of actuating pressure fluid and two valves arranged and operated to open and close alternatively to admit pressure fluid to the cell structure at the upstream end thereof and release it from the downstream end, said valves being solenoid operated in accordance with a square-wave form of electrical input.
Claim 19
Dependent Claim
147 words
A pump comprising a flexible-walled duct forming the inner wall of a cell structure, an outer wall surrounding said duct and sealed thereto at each end of the cell structure said walls defining space with a volume varied by distension and contraction of said inner wall, means for admitting and emitting to and from said space a pulsating flow of actuating fluid, an inlet for pumped fluid into one end of the duct and an outlet for such fluid from the other end of the duct, means to prevent reverse flow of the pumped fluid from the duct, and means to restrict flow of the actuating fluid between the ends of the cell structure so that the said inner wall is collapsed by distension of the said space by the pressure of the actuating fluid, which distension is progressive from said one end to the other end.
Claim 20
Dependent Claim
147 words
A pump comprising a flexible-walled duct forming the inner wall of a cell structure, an outer wall surrounding said duct and sealed thereto at each end of the cell structure said walls defining space with a volume varied by distension and contraction of said inner wall, means for admitting and emitting to and from said space a pulsating flow of actuating fluid, an inlet for pumped fluid into one end of the duct and an outlet for such fluid from the other end of the duct, means to prevent reverse flow of the pumped fluid from the duct, and means to restrict flow of the actuating fluid between the ends of the cell structure so that the said inner wall is collapsed by distension of the said space by the pressure of the actuating fluid, which distension is progressive from said one end to the other end.
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) | 1974-12-27 | 1975-06-28 | 1975-12-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-12-27 | 1979-06-28 | 1979-12-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-12-27 | 1983-06-28 | 1983-12-28 | $7700.00 | Window Closed / Lapsed |