US3565286A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquid programming and pumping apparatus
Assignee: Haemonetics Corp
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Filing: 1968-10-18
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Granted: 1971-02-23
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Expires: 1988-10-18
Abstract
Abstract A liquid programming and pumping apparatus for delivering a liquid mixture, the flow rate and composition of which may be continuously varied in accordance with a predetermined protocol. Liquid reservoirs deliver liquid to a mixing manifold through flexible tubings which pass through roller pumps, the speeds of which are automatically adjusted by programmed optical cams which control the amount of radiant energy reaching detectors, the output of which are electrical signals controlling variable speed pump drive motors. The apparatus is particularly well-suited for integration with a centrifuge used in glycerolization and deglycerolization of red blood cells.
Inventors
- 👤 Allen Latham Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 11:42
CPC Classifications
F; F04; F04B; F04B43/00; F04B43/12; F04B43/1253; F04B43/1292
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
160 words
a contoured pressure platen arranged with said rollers in rotating sequence to engage and compress flexible tubing, said pressure platen being formed of a resin of sufficient hardness to assure occlusion of said tubing and of sufficient resiliency to accommodate variations in dimensional tolerances within said roller pumps and said tubings; c. flexible tubing conduit means providing fluid communication between said reservoirs through said pumps to manifold means and mixing means; d. variable pump drive means associated with each of said pumps and comprising a motor and motor speed control means capable of responding to signals of varying magnitude; and e. means for controlling each of said variable pump drive means comprising programmed cam means and means responsive to said programmed cam means and being adapted to generate said signals, whereby the volume flow rate of liquid from each of said reservoirs and the total volume flow rate and composition of liquid in said manifold and mixing means are controlled.
Claim 2
Dependent Claim
6 words
means for rotating said drum; and
Claim 3
Dependent Claim
51 words
a contoured pressure platen arranged with said rollers in rotating sequence to engage and compress said flexible tubing, said pressure platen being formed of resin of sufficient hardness to assure occlusion of said tubing and of sufficient resiliency to accommodate variations in dimension tolerances within said roller pumps and said tubing.
Claim 4
Dependent Claim
6 words
means for rotating said drum; and
Claim 5
Dependent Claim
6 words
means for rotating said drum; and
Claim 6
Dependent Claim
28 words
means adapted to amplify said signal and to transmit an amount of electrical energy to said motor to exactly sustain said motor speed called for by said signal.
Claim 7
Dependent Claim
64 words
An apparatus in accordance with claim 1 wherein those portions of said flexible tubing conduit means passing through said pumps are held in a removable harness comprising first and second tubing holding bars, said manifold means being in part located in said second tubing holding bar and said mixing means being characterized as being constrictions in the fluid passage immediately beyond said manifold means.
Claim 8
Dependent Claim
33 words
An apparatus in accordance with claim 1 wherein said programmed cam means are optical cams and said means responsive to said programmed cam means comprise radiant energy-detecting means adapted to generate said signals.
Claim 9
Dependent Claim
86 words
a source of radiant energy positioned within said drum; f. detecting means adapted to receive radiant energy from said source through said cam members and to convert said energy to signals, the magnitude of which are functions of the amount of radiant energy transmitted to said detecting means through said cam members; and g. means to transmit said signals to said motor speed control means whereby the speeds of said pumps and hence the flow rates of said liquids are determined by said optical cam members.
Claim 10
Dependent Claim
100 words
a source of radiant energy positioned within said drum; g. detecting means adapted to receive radiant energy from said source through said cam members and to convert said energy to signals, the magnitudes of which are functions of the amount of radiant energy transmitted to said detecting means through said cam members; h. clutch means associated with said variable pump drive means and adapted to effect engagement and disengagement of said pump drive means and selected ones of said roller pumps with which said pump drive means are associated; and i. clutch control means synchronized with said optical cam means.
Claim 11
Dependent Claim
100 words
a source of radiant energy positioned within said drum; h. detecting means adapted to receive radiant energy from said source through said cam members and to convert said energy to signals, the magnitudes of which are functions of the amount of radiant energy transmitted to said detecting means through said cam members; i. clutch means associated with said variable pump drive means and adapted to effect engagement and disengagement of said pump drive means and selected ones of said roller pumps with which said pump drive means are associated; and j. clutch control means synchronized with said optical cam means.
Claim 12
Dependent Claim
50 words
An apparatus in accordance with claim 1 wherein said programmed cam means are rotatable optical cams and means for rotating said optical cams, said optical cams being adapted to transmit radiant energy in amounts following a predetermined pattern and said means responsive to said programmed cam means comprise, in combination:
Claim 13
Dependent Claim
80 words
A liquid-programming and -pumping apparatus, comprising in combination: a. a plurality of reservoirs arranged for gravity discharge of liquids therefrom; b. a plurality of roller pumps; c. flexible tubing conduit means providing fluid communication between said reservoirs through said pumps to manifold and mixing means; d. variable pump drive means associated with each of said pumps and comprising a motor and motor speed control means capable of responding to signals of variable magnitude; e. optical cam means, comprising in combination:
Claim 14
Dependent Claim
25 words
An apparatus in accordance with claim 5 wherein said striplike optical cam members vary in width thereby to control the transmission of said radiant energy.
Claim 15
Dependent Claim
26 words
An apparatus in accordance with claim 5 wherein said striplike optical cam members vary in optical density thereby to control tHe transmission of said radiant energy.
Claim 16
Dependent Claim
47 words
An apparatus in accordance with claim 5 further characterized by having clutch means associated with said variable pump drive means and adapted to effect engagement and disengagement of said pump drive means and selected ones of said roller pumps with which said pump drive means are associated.
Claim 17
Dependent Claim
20 words
An apparatus in accordance with claim 8 further characterized by having clutch control means synchronized with said optical cams means.
Claim 18
Dependent Claim
87 words
A liquid programming and pumping apparatus, comprising in combination: a. a plurality of reservoirs arranged for discharge of liquids therefrom; b. a plurality of roller pumps; c. a liquid mixing manifold; d. flexible tubing conduit means providing fluid communications between said reservoirs through said pumps to said manifold, those portions of said flexible tubing means passing through said pumps being held in a harness comprising first and second tubing holding bars; e. variable pump drive means associated with said pumps; f. optical cam means, comprising in combination:
Claim 19
Dependent Claim
14 words
An apparatus in accordance with claim 10 wherein each of said roller pumps comprises;
Claim 20
Dependent Claim
25 words
An apparatus in accordance with claim 10 wherein said striplike optical cam members vary in width thereby to control the transmission of said radiant energy.
Claim 21
Dependent Claim
26 words
An apparatus in accordance with claim 10 wherein said striplike optical cam members vary in optical density thereby to control the transmission of said radiant energy.
Claim 22
Dependent Claim
57 words
An apparatus in accordance with claim 10 wherein said mixing manifold is a flexible tubing, a first section of which is positioned within said second tubing holding bar and a second section of which is adapted for connection to a centrifuge rotor, said second section having at least one constriction to serve as a liquid mixing means.
Claim 23
Dependent Claim
24 words
An apparatus in accordance with claim 14 wherein said constriction has a flow area between 15 percent and 40 percent of said second section.
Claim 24
Independent Claim
145 words
An apparatus adapted to provide liquid at a predetermined rate and composition to a centrifuge, comprising in combination: a. a plurality of reservoirs arranged for discharge of liquids therefrom; b. a plurality of roller pumps; c. flexible tubing conduit means in fluid communication with said reservoirs passing through said roller pumps and being held in a harness comprising first and second tubing holding bars; d. a liquid-mixing manifold to which said flexible tubing conduit means are joined, said mixing manifold being a flexible tubing, a first section of which is positioned within said second tubing holding bar and a second section of which has aT least one constriction to serve as a liquid-mixing means; e. a centrifuge rotor adapted for connection with said second section of said mixing manifold; f. variable pump drive means associated with said pumps; g. optical cam means, comprising in combination
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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) | 1974-02-22 | 1974-08-24 | 1975-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-22 | 1978-08-24 | 1979-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-22 | 1982-08-24 | 1983-02-23 | $7700.00 | Window Closed / Lapsed |