US3698494A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Balance for blood bag
Assignee: Labaz SA
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Filing: 1971-04-08
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Granted: 1972-10-17
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Expires: 1991-04-08
Abstract
Abstract A balance for weighing and agitating a blood bag into which blood is fed from a donor, comprises a pivoted beam provided with an adjustable counterweight on one side of the pivot axis and a pan on the other side. The pan is mounted on a rocking arm pivotally supported on the beam and rocked about an axis extending along the beam by a motor mounted on the beam.
Inventors
- 👤 Jean Joseph Gaudin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 05:09
CPC Classifications
G; G01; G01G; G01G19/00; A; A61; A61M; A61M1/00; A61M1/02; A61M1/024; A61M1/0245; G01G1/00; G01G1/18; G01G1/26; G01G1/36; G01G23/00; Y; Y10; Y10S; Y10S128/00; Y10S128/06; Y10S128/13; Y10S604/00; Y10S604/903
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
121 words
In a balance for enabling a predetermined quantity of blood to be received while being agitated in a blood bag connected by a filling tube to a source of blood, comprising a beam, a frame, means pivoting the beam intermediate the length of the beam on the frame, a support for a blood bag, means mounting said support on an end of the beam for rocking movement of the support relative to the beam, and a micromotor carried by the beam for rocking said support; the improvement in which said beam comprises, on the side of said piVoting means opposite said support, two rods rigidly interconnected to each other, and a manually adjustable counterweight slidable lengthwise along each of said rods.
Claim 2
Dependent Claim
121 words
In a balance for enabling a predetermined quantity of blood to be received while being agitated in a blood bag connected by a filling tube to a source of blood, comprising a beam, a frame, means pivoting the beam intermediate the length of the beam on the frame, a support for a blood bag, means mounting said support on an end of the beam for rocking movement of the support relative to the beam, and a micromotor carried by the beam for rocking said support; the improvement in which said beam comprises, on the side of said piVoting means opposite said support, two rods rigidly interconnected to each other, and a manually adjustable counterweight slidable lengthwise along each of said rods.
Claim 3
Dependent Claim
24 words
A balance as claimed in claim 1, one of said counterweights being mounted to slide under its own weight along its associated said rod.
Claim 4
Dependent Claim
24 words
A balance as claimed in claim 1, both of said counterweights being mounted to slide under their own weight along their associated said rods.
Claim 5
Dependent Claim
26 words
A balance as claimed in claim 1, and a separate releasable device adjustable in position along one of said rods for stopping the associated said counterweight.
Claim 6
Dependent Claim
39 words
A balance as claimed in claim 1, and an abutment member carried by one of said rods and movable in response to movement of the beam to pinch said tube to interrupt the flow of blood through said tube.
Claim 7
Dependent Claim
131 words
In a balance for enabling a predetermined quantity of blood to be received while being agitated in a blood bag connected by a filling tube to a source of blood, comprising a beam, a frame, means pivoting the beam intermediate the length of the beam on the frame, a support for a blood bag, means mounting said support on an end of the beam for rocking movement of the support relative to the beam, and a micromotor carried by the beam for rocking said support; the improvement comprising an abutment member movable to pinch said tube to interrupt the flow of blood through said tube, an electromagnet having a movable core to which said abutment member is connected, and a switch controlled by movement of the beam for actuating said electromagnet.
Claim 8
Dependent Claim
131 words
In a balance for enabling a predetermined quantity of blood to be received while being agitated in a blood bag connected by a filling tube to a source of blood, comprising a beam, a frame, means pivoting the beam intermediate the length of the beam on the frame, a support for a blood bag, means mounting said support on an end of the beam for rocking movement of the support relative to the beam, and a micromotor carried by the beam for rocking said support; the improvement comprising an abutment member movable to pinch said tube to interrupt the flow of blood through said tube, an electromagnet having a movable core to which said abutment member is connected, and a switch controlled by movement of the beam for actuating said electromagnet.
Claim 9
Dependent Claim
131 words
In a balance for enabling a predetermined quantity of blood to be received while being agitated in a blood bag connected by a filling tube to a source of blood, comprising a beam, a frame, means pivoting the beam intermediate the length of the beam on the frame, a support for a blood bag, means mounting said support on an end of the beam for rocking movement of the support relative to the beam, and a micromotor carried by the beam for rocking said support; the improvement comprising an abutment member movable to pinch said tube to interrupt the flow of blood through said tube, a catch mechanism having a biasing spring for moving said abutment member, and a trigger device for said catch mechanism actuated by movement of the beam.
Claim 10
Dependent Claim
131 words
In a balance for enabling a predetermined quantity of blood to be received while being agitated in a blood bag connected by a filling tube to a source of blood, comprising a beam, a frame, means pivoting the beam intermediate the length of the beam on the frame, a support for a blood bag, means mounting said support on an end of the beam for rocking movement of the support relative to the beam, and a micromotor carried by the beam for rocking said support; the improvement comprising an abutment member movable to pinch said tube to interrupt the flow of blood through said tube, a catch mechanism having a biasing spring for moving said abutment member, and a trigger device for said catch mechanism actuated by movement of the beam.
Claim 11
Dependent Claim
112 words
In a balance for enabling a predetermined quantity of blood to be received while being agitated in a blood bag connected by a filling tube to a source of blood, comprising a beam, a frame, means pivoting the beam intermediate the length of the beam on the frame, a support for a blood bag, means mounting said support on an end of the beam for rocking movement of the support relative to the beam, and a micromotor carried by the beam for rocking said support; the improvement comprising a microswitch for controlling the flow of electric current to said micromotor, and means responsive to movement of the beam to actuate said microswitch.
Claim 12
Dependent Claim
112 words
In a balance for enabling a predetermined quantity of blood to be received while being agitated in a blood bag connected by a filling tube to a source of blood, comprising a beam, a frame, means pivoting the beam intermediate the length of the beam on the frame, a support for a blood bag, means mounting said support on an end of the beam for rocking movement of the support relative to the beam, and a micromotor carried by the beam for rocking said support; the improvement comprising a microswitch for controlling the flow of electric current to said micromotor, and means responsive to movement of the beam to actuate said microswitch.
Claim 13
Dependent Claim
124 words
In a balance for enabling a predetermined quantity of blood to be received while being agitated in a blood bag connected by a filling tube to a source of blood, comprising a beam, a frame, means pivoting the beam intermediate the length of the beam on the frame, a support for a blood bag, means mounting said support on an end of the beam for rocking movement of the support relative to the beam, and a micromotor carried by the beam for rocking said support; the improvement comprising electric warning means for signalling the end of the receipt of blood, a microswitch controlling the flow of electric current to said warning means, and means responsive to movement of the beam to actuate said microswitch.
Claim 14
Dependent Claim
124 words
In a balance for enabling a predetermined quantity of blood to be received while being agitated in a blood bag connected by a filling tube to a source of blood, comprising a beam, a frame, means pivoting the beam intermediate the length of the beam on the frame, a support for a blood bag, means mounting said support on an end of the beam for rocking movement of the support relative to the beam, and a micromotor carried by the beam for rocking said support; the improvement comprising electric warning means for signalling the end of the receipt of blood, a microswitch controlling the flow of electric current to said warning means, and means responsive to movement of the beam to actuate said microswitch.
Claim 15
Dependent Claim
14 words
A balance as claimed in claim 9, said warning means comprising a warning light.
Claim 16
Dependent Claim
14 words
A balance as claimed in claim 9, said warning means giving an audible warning.
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) | 1975-10-17 | 1976-04-17 | 1976-10-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-17 | 1980-04-17 | 1980-10-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-17 | 1984-04-17 | 1984-10-17 | $7700.00 | Window Closed / Lapsed |