US3783866A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dosing device utilizing an electronic scale and regulating means
Assignee: Individual
•
Filing: 1971-02-03
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Granted: 1974-01-08
•
Expires: 1991-02-03
Abstract
Abstract A method for dosing patients with blood, nutrients, chemical solutions and the like, using a new device which includes gravity dose feeding means and gravity dose removal means both in communication with a regulating valve. The valve is regulated by an electric motor which is turn controlled by an electronic scale. The scale senses changes in gravity flow containers to automatically control the dosage.
Inventors
- 👤 E Tirkkonen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:38
CPC Classifications
A; A61; A61M; A61M1/00; A61M1/14; A61M1/28; A61M1/16; A61M1/1621; A61M1/1643; A61M3/00; A61M3/02; A61M3/0233; A61M3/0241; A61M5/00; A61M5/14; A61M5/168; A61M5/16831; A61M5/1684; A61M5/16845; A61M5/172; A61M2205/00; A61M2205/33; A61M2205/3379; A61M2205/3393; A61M3/0202; A61M3/0204; A61M3/022
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
141 words
A dosing device for feeding doses of blood, nutrients, chemical solutions, other liquids and the like to a patient, said device comprising in combination, an upper container adapted to be disposed at a level higher than the patient, a lower container adapted to be disposed at a level lower than the patient, a three-way valve in communication with the upper container and with the lower container through connecting tubes, a regulating motor, the three-way valve being controlled by the regulating motor, an electronic scale, said regulating motor being controlled by the electronic scale, said electronic scale arranged to weigh the upper container, and the lower container, a tube in communication with said valve and said patient whereby dose feeding of the patient and dose removal from the patient is effected by gravity, without a pump, by regulation of the said valve.
Claim 2
Dependent Claim
141 words
A dosing device for feeding doses of blood, nutrients, chemical solutions, other liquids and the like to a patient, said device comprising in combination, an upper container adapted to be disposed at a level higher than the patient, a lower container adapted to be disposed at a level lower than the patient, a three-way valve in communication with the upper container and with the lower container through connecting tubes, a regulating motor, the three-way valve being controlled by the regulating motor, an electronic scale, said regulating motor being controlled by the electronic scale, said electronic scale arranged to weigh the upper container, and the lower container, a tube in communication with said valve and said patient whereby dose feeding of the patient and dose removal from the patient is effected by gravity, without a pump, by regulation of the said valve.
Claim 3
Dependent Claim
16 words
The dosing device of claim 1 wherein the lower container is suspended from the upper container.
Claim 4
Dependent Claim
24 words
The dosing device of claim 1, wherein an electronic scale device is arranged to weigh the gross weight of the upper and lower container.
Claim 5
Dependent Claim
125 words
The dosing device of claim 1, wherein the upper container and the lower container are supported by scales, and wherein the three-way valve includes a closing device with two positions, one of said positions disposed for closing the feed tube and permitting the outlet tube to open, the second of said positions disposed for closing the outlet tube and permitting the feed tube to open, said closing device being controlled by electronic means in association with said scales, said electronic means giving a pulse at two weight values, of which the higher gross weight effects the second closing position for release of a dose to the feed tube, and of which the lower gross weight after release of a dose effects the first closing position.
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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) | 1977-01-07 | 1977-07-09 | 1978-01-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-01-07 | 1981-07-09 | 1982-01-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-01-07 | 1985-07-09 | 1986-01-08 | $7700.00 | Window Closed / Lapsed |