Patent US4463928A successfully refreshed from Google Patents.
US4463928A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Clamp regulator for transfusing liquid and blood
Assignee: Individual
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Filing: 1982-07-23
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Granted: 1984-08-07
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Expires: 2002-07-23
Abstract
Abstract The present invention relates to a clamp regulator for transfusing liquid and blood, and in particular to one which utilizes an adjustable wheel made integrally with an auxiliary wheel to compress a tubing on a conical surface so as to regulate the liquid flow passing through the tubing.
Inventors
- 👤 Shiro Ueda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 07:56
CPC Classifications
A; A61; A61M; A61M39/00; A61M39/22; A61M39/28; A61M39/286
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
159 words
A clamp regulator for controlling liquid flow through a flexible tubing comprising: a clamp frame having a first groove and a second groove, both extending longitudinally along the frame and having an inclined bottom to form deep and shallow ends, respectively, the first groove being provided with two guided protuberances and having a cross sectional area which increases from the deep to the shallow end; an adjustable wheel slidably mounted into the clamp frame in such a way that the lower part of the wheel is positioned in the first groove, the adjustable wheel being adapted to engage the guided protuberances in the first groove to allow the wheel to move along the center line of the first groove; and an auxiliary wheel slidably mounted into the clamp frame in such a manner that the lower part of the wheel is located in the second groove, the auxiliary wheel being connected integrally to the adjustable wheel by an axle.
Claim 2
Dependent Claim
159 words
A clamp regulator for controlling liquid flow through a flexible tubing comprising: a clamp frame having a first groove and a second groove, both extending longitudinally along the frame and having an inclined bottom to form deep and shallow ends, respectively, the first groove being provided with two guided protuberances and having a cross sectional area which increases from the deep to the shallow end; an adjustable wheel slidably mounted into the clamp frame in such a way that the lower part of the wheel is positioned in the first groove, the adjustable wheel being adapted to engage the guided protuberances in the first groove to allow the wheel to move along the center line of the first groove; and an auxiliary wheel slidably mounted into the clamp frame in such a manner that the lower part of the wheel is located in the second groove, the auxiliary wheel being connected integrally to the adjustable wheel by an axle.
Claim 3
Dependent Claim
33 words
The regulator of claim 1 wherein the width A of the adjustable wheel, the outside diameter B of the tubing and the wall thickness C of the tubing satify the following equation A=B-4C.
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) | 1987-08-07 | 1988-02-06 | 1988-08-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-08-07 | 1992-02-06 | 1992-08-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-08-07 | 1996-02-06 | 1996-08-07 | $7700.00 | Window Closed / Lapsed |