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US3581575A Expired / Lapsed US ⏱️ 0.0 years remaining

Dispensing apparatus for receiving and discharging a precisely predetermined volume of fluid

Assignee: Fisons Ltd
•
Filing: 1969-04-11
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Granted: 1971-06-01
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Expires: 1989-04-11
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Abstract

Abstract A motorized syringe for receiving and dispensing and/or diluting very accurately controlled amounts of liquids in combination with a separate portable or remote, hollow-bodied control unit connected by a flexible conduit to one or more such motorized syringes. The operation of a plurality of the motorized syringes may be integrated by means of a programmed operating means whose operation cycle is initiated from the remote control unit connected therewith, with the attendant advantage that complex operations requiring the use of many such syringes in combination with one another may be carried out at a single location, with the operator merely exchanging vessels serving the liquidconducting outlet/inlet tube or tubes provided in the remote control unit and connected with the flexible conduit, whereby the liquid is readily dispensed or picked up; and, if necessary, some further stage of the process can be initiated by actuation of one or more control buttons provided on the control unit. The outlet/inlet tubes are of relatively small diameters and have interchangeable probelike portions with a free end projecting a substantial distance beyond the body to facilitate picking up liquid from and/or dispensing liquid into vessels having relatively narrow, elongated necks.

Inventors

  • 👤 Robert Roy Butler

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-23 00:54
CPC Classifications
G; G01; G01N; G01N35/00; G01N35/10; G01N35/1065; G01N35/1067; G01N1/00; G01N1/28; G01N1/38; G01N2035/1069

Claims Analysis

Total Claims: 29
Claim 1
Independent Claim 263 words
The combination of a control mechanism and pump means for receiving and discharging a precisely predetermined volume of fluid from associated fluid reservoir means to a delivery site, which combination comprises: a. pump means including first variable-volume displacementchamber pump means adapted for fluid flow communication with the reservoir means; b. an electrical motive power means operatively connected to and for driving said pump means; c. means including adjustable limit-stop means interconnected with said pump means and motive power means providing for selectively adjusting and effecting the precisely predetermined volumes of fluid; d. a hand-manipulatable housing of portable character capable of being moved about a work area independently of the pump means, the housing being provided with a fluid-conducting tubular probe having one end projecting from the housing and with a fluid flow communication line connecting the other end of the probe witH the pump means, said housing having at least one electrical switch and related circuitry connecting it with the electrical motive means, said switch being operable to selectively actuate the electrical motive power means; and e. a multiple-position valve means operatively connected with and driven by said motive power means in synchronization with said pump means and controlling the line of fluid flow communication to the pump means, whereby in a first position the pump means is in fluid flow communication with the fluid reservoir to provide intake of a predetermined volume of fluid into the pump means, and in another position to provide discharge of said fluid from the pump means via said probe in the housing to a delivery site.
Claim 2
Dependent Claim 263 words
The combination of a control mechanism and pump means for receiving and discharging a precisely predetermined volume of fluid from associated fluid reservoir means to a delivery site, which combination comprises: a. pump means including first variable-volume displacementchamber pump means adapted for fluid flow communication with the reservoir means; b. an electrical motive power means operatively connected to and for driving said pump means; c. means including adjustable limit-stop means interconnected with said pump means and motive power means providing for selectively adjusting and effecting the precisely predetermined volumes of fluid; d. a hand-manipulatable housing of portable character capable of being moved about a work area independently of the pump means, the housing being provided with a fluid-conducting tubular probe having one end projecting from the housing and with a fluid flow communication line connecting the other end of the probe witH the pump means, said housing having at least one electrical switch and related circuitry connecting it with the electrical motive means, said switch being operable to selectively actuate the electrical motive power means; and e. a multiple-position valve means operatively connected with and driven by said motive power means in synchronization with said pump means and controlling the line of fluid flow communication to the pump means, whereby in a first position the pump means is in fluid flow communication with the fluid reservoir to provide intake of a predetermined volume of fluid into the pump means, and in another position to provide discharge of said fluid from the pump means via said probe in the housing to a delivery site.
Claim 3
Dependent Claim 154 words
A combination as defined in claim 9 wherein the pump means further includes a second variable-volume displacement-chamber pump means operatively connected with said power means, and having means providing fluid flow communication with said probe in the housing for picking up into and discharging from the probe an independently predetermined precise volume of fluid, said valve means including means to provide fluid flow communication in a sequence of positions not only between said first pump means and the associated reservoir, and between said first pump means and said probe in the housing, but also between said second pump means and said probe in the housing, whereby in a desired sequence a precise predetermined amount of first fluid is drawn into said first pump means, a precise predetermined amount of a second fluid is drawn into said probe by said second pump means, and subsequently the first and second fluids are discharged through said probe.
Claim 4
Dependent Claim 15 words
an electrical motive power means operatively connected to and for driving said third pump means;
Claim 5
Dependent Claim 15 words
an electrical motive power means operatively connected to and for driving said third pump means;
Claim 6
Dependent Claim 36 words
a second fluid-conducting tubular probe in the said hand-manipulatable housing having one end projecting from the housing and with a fluid flow communication line connecting the other end of the probe with the third pump means;
Claim 7
Dependent Claim 36 words
a second fluid-conducting tubular probe in the said hand-manipulatable housing having one end projecting from the housing and with a fluid flow communication line connecting the other end of the probe with the third pump means;
Claim 8
Dependent Claim 33 words
a fourth variable-displacement-chamber pump means in fluid flow communication with said second probe in said housing for picking up into and discharging from the second probe an independently predetermined precise volume of fluid;
Claim 9
Dependent Claim 33 words
a fourth variable-displacement-chamber pump means in fluid flow communication with said second probe in said housing for picking up into and discharging from the second probe an independently predetermined precise volume of fluid;
Claim 10
Dependent Claim 41 words
means including adjustable stop means interconnected with the said third pump means and the motive power means driving the third pump means providing for selectively adjusting and effecting the precisely determined volume of the displacement chamber of the third pump means;
Claim 11
Dependent Claim 41 words
means including adjustable stop means interconnected with the said third pump means and the motive power means driving the third pump means providing for selectively adjusting and effecting the precisely determined volume of the displacement chamber of the third pump means;
Claim 12
Dependent Claim 108 words
An association of a combination as claimed in claim 1 with another same combination also as claimed in claim 9, characterized in that the said pump means and the said valve means of said combinations serve one probe housing and in that there is further provided a programmed operation means operatively connected with said electrical motive power means and with said switch, said programmed operating means having a cycle of operations initiated by actuation of a switch in the housing, and which programmed operating means thereby actuates the motive power means driving each pump means and the valve means operatively serving the pump means in the desired sequence.
Claim 13
Dependent Claim 51 words
An association as claimed in claim 3 wherein said one housing is provided with a similar second probe and including fluid flow communication lines similarly and separately connecting it respectively with said pump means, reservoir means and said valve means to selectively serve each of the related associations in the combination
Claim 14
Dependent Claim 183 words
a multiple-position valve means operatively connected with and driven by the motive power means driving the third pump means in synchronization with the third pump means and controlling the line of fluid flow communication to the third pump means, whereby in a first position the third pump means is in fluid flow communication with the reservoir means it serves to provide intake of a predetermined volume of fluid into the third pump means, and in another position to provide discharge to a delivery site of said fluid from said third pump means via a probe in said housing to which the third pump is connected by a fluid flow communication line; and further including a programmed operating means operatively connected with the said electrical motive power means serving all three pump means and said switch in the housing, said programmed operating means having a cycle of operations initiated by actuation of said switch in the housing and with programmed operating means thereby actuates the motive power means driving each pump means and the valve means operatively serving the pump means in desired sequence.
Claim 15
Dependent Claim 183 words
a multiple-position valve means operatively connected with and driven by the motive power means driving the third pump means in synchronization with the third pump means and controlling the line of fluid flow communication to the third pump means, whereby in a first position the third pump means is in fluid flow communication with the reservoir means it serves to provide intake of a predetermined volume of fluid into the third pump means, and in another position to provide discharge to a delivery site of said fluid from said third pump means via a probe in said housing to which the third pump is connected by a fluid flow communication line; and further including a programmed operating means operatively connected with the said electrical motive power means serving all three pump means and said switch in the housing, said programmed operating means having a cycle of operations initiated by actuation of said switch in the housing and with programmed operating means thereby actuates the motive power means driving each pump means and the valve means operatively serving the pump means in desired sequence.
Claim 16
Dependent Claim 17 words
an electrical motive power means operatively connected to and for driving said third and fourth power means;
Claim 17
Dependent Claim 17 words
an electrical motive power means operatively connected to and for driving said third and fourth power means;
Claim 18
Dependent Claim 62 words
An association as claimed in claim 3 wherein the programmed operating means is provided with switch-activated means for effecting at least one interruption in the cycle of its operation and the housing is provided with a corresponding number of electrical switches operatively connected with said programmed operating means so that subsequent switch actuation initiates a further operation of the programmed operating means.
Claim 19
Dependent Claim 49 words
means including adjustable stop means interconnected with the said third and fourth pump means and the motive power means driving said third and fourth pump means providing for independently and selectively adjusting and effecting the precisely predetermined volumes of the displacement chambers of said third and fourth pump means;
Claim 20
Dependent Claim 49 words
means including adjustable stop means interconnected with the said third and fourth pump means and the motive power means driving said third and fourth pump means providing for independently and selectively adjusting and effecting the precisely predetermined volumes of the displacement chambers of said third and fourth pump means;
Claim 21
Dependent Claim 12 words
A combination as defined in claim 2 further including a subcombination comprising:
Claim 22
Dependent Claim 207 words
a multiple-position valve means operatively connected with and driven by the motive power means driving the third and fourth pump means in synchronization with the third and fourth pump means and controlling the lines of fluid flow communication to the third and fourth pump means to provide fluid flow communication in a sequence of positions between the third pump means and the reservoir means which it serves, between the third pump means and the second probe and between the fourth pump means and the second probe whereby in a desired sequence a precise predetermined amount of a fluid is drawn into the third pump means, a precise predetermined amount of another fluid is drawn into the second probe by the fourth pump means, and subsequently the two fluids are discharged through the second probe; and further including a programmed operating means operatively connected with the electrical motive power means serving the four pump means and a switch in the housing, said programmed operating means having a cycle of operations initiated by the actuation of the switch in the housing and which programmed operating means thereby actuates the motive power means driving each pump means and the valve means operatively serving the pump means in the desired sequence.
Claim 23
Dependent Claim 207 words
a multiple-position valve means operatively connected with and driven by the motive power means driving the third and fourth pump means in synchronization with the third and fourth pump means and controlling the lines of fluid flow communication to the third and fourth pump means to provide fluid flow communication in a sequence of positions between the third pump means and the reservoir means which it serves, between the third pump means and the second probe and between the fourth pump means and the second probe whereby in a desired sequence a precise predetermined amount of a fluid is drawn into the third pump means, a precise predetermined amount of another fluid is drawn into the second probe by the fourth pump means, and subsequently the two fluids are discharged through the second probe; and further including a programmed operating means operatively connected with the electrical motive power means serving the four pump means and a switch in the housing, said programmed operating means having a cycle of operations initiated by the actuation of the switch in the housing and which programmed operating means thereby actuates the motive power means driving each pump means and the valve means operatively serving the pump means in the desired sequence.
Claim 24
Dependent Claim 97 words
A combination and subcombination as claimed in claim 6 wherein the reservoir means connected to the third pump means is separate from the reservoir means connected to the first pump means; the electrical motive power means driving the third pump means is separate from that driving the first and second pump means; the fluid-conducting probe connected to the third pump means is separate from the probe serving the first and second pump means; and the multiple-position valve means serving the third pump means is separate from the multiple-position valve means serving the first and second pump means.
Claim 25
Dependent Claim 12 words
A combination as defined in claim 1 further including a subcombination comprising:
Claim 26
Dependent Claim 80 words
The combination and subcombination as claimed in claim 8 wherein the reservoir means conNected to the third pump means is separate from the reservoir means connected to the first pump means; the electrical motive power means driving the third and fourth pump means is separate from that driving the first and second pump means; and the multiple-position valve means serving the third and fourth pump means is separate from the multiple-position valve means serving the first and second pump means.
Claim 27
Dependent Claim 52 words
The combination and subcombination as claimed in claim 9 wherein the first and second probes in the hand-manipulatable housing are moveable from a splayed-apart position to a closer adjacent position by means including a slidable member slidable along the probes to control the relative positions of the free ends of the probes.
Claim 28
Dependent Claim 62 words
An association as claimed in claim 6 wherein the programmed operating means is provided with switch-activated means for effecting at least one interruption in the cycle of its operation and the housing is provided with a corresponding number of electrical switches operatively connected with said programmed operating means so that subsequent switch actuation initiates a further operation of the programmed operating means.
Claim 29
Dependent Claim 62 words
An association as claimed in claim 8 wherein the programmed operating means is provided with switch-activated means for effecting at least one interruption in the cycle of its operation and the housing is provided with a corresponding number of electrical switches operatively connected with said programmed operating means so that subsequent switch actuation initiates a further operation of the programmed operating means.

References Cited (Backward Citations)

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US2177752A Cited
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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) 1974-05-31 1974-11-30 1975-06-01 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1978-05-31 1978-11-30 1979-06-01 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1982-05-31 1982-11-30 1983-06-01 $7700.00 Window Closed / Lapsed

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