US4484599A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pinch-type pressure- or flow-regulating valve
Assignee: Terumo BCT Inc
•
Filing: 1983-09-23
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Granted: 1984-11-27
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Expires: 2003-09-23
Abstract
Abstract A pinch-type shut-off, pressure- or flow-regulating valve having a flexible tube extending through a valve body wherein the flexible tube is pinched off by the action of an eccentric cam attached to a motor. As the eccentric cam is rotated the flexible tube can be pinched off as it presses against the opposing wall inside the valve body. A number of positions of pinching off can be achieved and a microswitch can be available to locate the position of the eccentric cam.
Inventors
- 👤 Barry K. Hanover
- 👤 Stephen C. Jacobsen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:49
CPC Classifications
F; F16; F16K; F16K7/00; F16K7/02; F16K7/04; F16K7/06; F16K7/065; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/87056; Y10T137/87064; Y10T137/87153; Y10T137/87161; Y10T137/877; Y10T137/87708; Y10T137/87716; Y10T137/87772
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
157 words
A pinch-type shut-off, pressure- or flow-regulating valve comprising: a valve body having at least one hole therethrough for placement of tubing, a flexible tube located in said at least one tube in said valve body, an eccentric including a substantially cylindrically shaped body, said eccentric located in said valve body and adjacent said flexible tube, a shaft projecting from one side of said cylindrically shaped body, said shaft being offset from the center of said cylindrically shaped body, a motor attached to said shaft, whereupon activation of said motor, said eccentric will move to pinch off said flexible tube by pressing said tube against the opposite side of said valve body, said eccentric further including a round rigid sleeve freely rotatably received about the outer curved portion of said cylindrically shaped body as said cylindrically shaped body rotates, and said sleeve directly engaging said tube, whereby longitudinal stress on said tube from said eccentric is substantially alleviated.
Claim 2
Dependent Claim
157 words
A pinch-type shut-off, pressure- or flow-regulating valve comprising: a valve body having at least one hole therethrough for placement of tubing, a flexible tube located in said at least one tube in said valve body, an eccentric including a substantially cylindrically shaped body, said eccentric located in said valve body and adjacent said flexible tube, a shaft projecting from one side of said cylindrically shaped body, said shaft being offset from the center of said cylindrically shaped body, a motor attached to said shaft, whereupon activation of said motor, said eccentric will move to pinch off said flexible tube by pressing said tube against the opposite side of said valve body, said eccentric further including a round rigid sleeve freely rotatably received about the outer curved portion of said cylindrically shaped body as said cylindrically shaped body rotates, and said sleeve directly engaging said tube, whereby longitudinal stress on said tube from said eccentric is substantially alleviated.
Claim 3
Dependent Claim
20 words
The valve of claim 1 wherein said valve body has at least two holes, each hole containing a flexible tube.
Claim 4
Dependent Claim
17 words
The valve of claim 2 wherein said at least two flexible tubes are made of silicone elastomer.
Claim 5
Dependent Claim
21 words
The valve of claim 3 wherein said at least two flexible tubes contain at their ends a connector of non-flexible material.
Claim 6
Dependent Claim
16 words
The valve of claim 3 wherein said two flexible tubes are connected by an internal Y-connector.
Claim 7
Dependent Claim
14 words
The valve of claim 3 comprising a series of flexible tubes in multiplanar configuration.
Claim 8
Dependent Claim
28 words
The valve of claim 3 wherein a switch is located adjacent the outer portion of said flexible tubes for engagement with said switch actuation pin on said eccentric.
Claim 9
Dependent Claim
28 words
The valve of claim 1 wherein said eccentric has a switch actuation pin and said valve further comprises a switch to record the position of said actuation pin.
Claim 10
Dependent Claim
14 words
The valve of claim 1 wherein said valve body is a one-piece valve body.
Claim 11
Dependent Claim
14 words
The valve of claim 1 wherein said valve body is a two-piece valve body.
Claim 12
Dependent Claim
27 words
The valve of claim 10 wherein said flexible tube is compressed over said eccentric by each piece of the valve body to prevent leakage at high pressure.
Claim 13
Dependent Claim
14 words
The valve of claim 1 wherein said flexible tube is made of silicone elastomer.
Claim 14
Dependent Claim
18 words
The valve of claim 12 wherein said flexible tube contains at its end a connector of non-flexible material.
Claim 15
Dependent Claim
12 words
The valve of claim 1 wherein said motor is a DC motor.
Claim 16
Dependent Claim
12 words
The valve of claim 1 wherein said motor is an AC motor.
Claim 17
Dependent Claim
12 words
The valve of claim 1 wherein said motor is a stepping motor.
Claim 18
Dependent Claim
15 words
The valve of claim 1 wherein said sleeve is formed of a molybdenum disulfide-filled polyamide.
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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) | 1987-11-27 | 1988-05-28 | 1988-11-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-11-27 | 1992-05-28 | 1992-11-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-11-27 | 1996-05-28 | 1996-11-27 | $7700.00 | Window Closed / Lapsed |