Patent NO128976B successfully refreshed from Google Patents.
US3913636A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for automatically distributing a determined amount of liquid
Assignee: Individual
•
Filing: 1974-04-10
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Granted: 1975-10-21
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Expires: 1994-04-10
Abstract
Abstract An apparatus for automatically distributing a determined amount of liquid in which a plate is pressed against a part of a tube made of flexible and resilient material along a certain length thereof to eject air in the pressed part of the tube. The plate is moved away from the tube with a pipette provided at the tube end being kept inserted into liquid in a liquid supply container to admit into the pipette the same amount of liquid as the ejected air. Then, under this condition, the pipette is inserted into a test tube and the plate is again pressed against the part of the tube to dispense the liquid in the pipette into the test tube.
Inventors
- 👤 Ei Mochida
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 08:58
CPC Classifications
G; G01; G01N; G01N1/00; G01N1/02; G01N1/10; G01N1/18
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
177 words
An apparatus for automatically distributing a preDetermined amount of liquid from a liquid supply container into each one of a plurality of containers comprising in combination: a tube made of flexible and resilient material and disposed along a flat plate, an end-opened pipette connected to the downstream end of the tube, upstream blocking means closing the tube, a primary push plate between the pipette and the upstream blocking means arranged to reciprocate between an operative position where the push plate presses a section of the tube against the flat plate and an inoperative position where the push plate is away from the tube which allows the tube to return to its original shape, an auxiliary push plate adjacent the primary push plate constructed and arranged to squeeze the tube after the primary push plate moves to its operative position to ensure discharge of the liquid in the pipette, and driving means for moving the pipette between the liquid supply container and the plurality of containers into which the liquid in the supply container is to be distributed.
Claim 2
Independent Claim
177 words
An apparatus for automatically distributing a preDetermined amount of liquid from a liquid supply container into each one of a plurality of containers comprising in combination: a tube made of flexible and resilient material and disposed along a flat plate, an end-opened pipette connected to the downstream end of the tube, upstream blocking means closing the tube, a primary push plate between the pipette and the upstream blocking means arranged to reciprocate between an operative position where the push plate presses a section of the tube against the flat plate and an inoperative position where the push plate is away from the tube which allows the tube to return to its original shape, an auxiliary push plate adjacent the primary push plate constructed and arranged to squeeze the tube after the primary push plate moves to its operative position to ensure discharge of the liquid in the pipette, and driving means for moving the pipette between the liquid supply container and the plurality of containers into which the liquid in the supply container is to be distributed.
Claim 3
Dependent Claim
108 words
An apparatus as in claim 1 wherein the connection of the pipette to the flexible and resilient tube includes a stiff tube slidably disposed between the pipette and the flexible tube, the flexible tube being disposed horizontally along the flat plate and the lower end of the pipette being open, and wherein the driving means is also connected to move the metal tube in a longitudinal direction whereby the liquid supply container and one of the plurality of containers into which the liquid in the supply container is to be distributed are alternatively moved up and down at predetermined intervals in the vertical direction immediately below the pipette.
Claim 4
Dependent Claim
39 words
An apparatus as in claim 1 wherein the flexible and resilient tube is fixedly secured to the flat plate at a portion of the tube, and means for adjusting the length of the tube by stretching that tube portion.
Claim 5
Dependent Claim
58 words
An apparatus as in claim 2 wherein the plurality of containers into which the liquid is to be distributed are arranged annularly along the circumference of a turntable so as to be disposed immediately below the pipette one after another, and support means for the container disposed immediately below said pipette for elevating the container at that location.
References Cited (Backward Citations)
US3437050A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-10-20 | 1979-04-21 | 1979-10-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-10-20 | 1983-04-21 | 1983-10-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-10-20 | 1987-04-21 | 1987-10-21 | $7700.00 | Window Closed / Lapsed |