US4101283A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Disposable reagent container and actuation mechanism
Assignee: Individual
•
Filing: 1976-07-13
•
Granted: 1978-07-18
•
Expires: 1996-07-13
Abstract
Abstract A pipetter diluter for sampling and delivery of a volumetric material. The pipetter diluter has a sampling and delivery tip connected to a cylindrical container. A threaded plunger is rotated by its threads for movement in and out of the inside surface of the cylindrical container. The in and out movement of the plunger facilitates sampling and delivery of the volumetric material.
Inventors
- 👤 Karl Erik Sundstrom
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 11:09
CPC Classifications
B; B01; B01L; B01L3/00; B01L3/02; B01L3/021; B01L3/0217; B01L3/0227
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
78 words
A volume portioning apparatus, comprising: (a) pipe means for sampling and delivery of volumetric material; (b) a cylindrical container having first and second ends with said first end connected to said pipe means; (c) plunger means cooperating with the inside of said cylindrical container for movement from said second end to said first end and return; and (d) means for performing movements of said plunger means into and out of said container with rotation of said plunger means.
Claim 2
Dependent Claim
78 words
A volume portioning apparatus, comprising: (a) pipe means for sampling and delivery of volumetric material; (b) a cylindrical container having first and second ends with said first end connected to said pipe means; (c) plunger means cooperating with the inside of said cylindrical container for movement from said second end to said first end and return; and (d) means for performing movements of said plunger means into and out of said container with rotation of said plunger means.
Claim 3
Dependent Claim
25 words
A portioning apparatus in accordance with claim 1 wherein the pipe communicating with the container is at the end thereof provided with a delivery tip.
Claim 4
Dependent Claim
90 words
A volume portioning apparatus, comprising: (a) pipe means for sampling and delivery of a volumetric material; (b) a cylindrical container having first and second ends with said first end connected to said pipe means; (c) plunger means cooperating with the inside of said cylindrical container for movement from said second end to said first end and return; (d) means for performing movements of said plunger means into and out of said container with rotation of said plunger means; and (e) means for applying an axial force to said plunger means.
Claim 5
Dependent Claim
90 words
A volume portioning apparatus, comprising: (a) pipe means for sampling and delivery of a volumetric material; (b) a cylindrical container having first and second ends with said first end connected to said pipe means; (c) plunger means cooperating with the inside of said cylindrical container for movement from said second end to said first end and return; (d) means for performing movements of said plunger means into and out of said container with rotation of said plunger means; and (e) means for applying an axial force to said plunger means.
Claim 6
Dependent Claim
42 words
The portioning apparatus of claim 1, wherein said container has a cylindrical inner surface and said means for performing movements comprise said plunger means provided with threads, said threads engaging said cylindrical inner surface which defines a guide for said plunger means.
Claim 7
Dependent Claim
48 words
The portioning apparatus of claim 3, wherein said means for applying an axial force comprise a shaft connected to said plunger means, said shaft being provided in the remote end thereof with a low friction sliding means axially sliding along a path member rotationally driven by motor means.
Claim 8
Dependent Claim
42 words
A portioning apparatus in accordance with claim 4, wherein the said threads of the plunger means have a knife like configuration and which are adapted to penetrate the said cylindrical inner surface of the container so as to cut thread grooves therein.
Claim 9
Dependent Claim
23 words
A portioning apparatus in accordance with claim 6, wherein the threads of the plunger means are arranged in sections around the circumference thereof.
Claim 10
Dependent Claim
28 words
A portioning apparatus in accordance with claim 9, wherein the plunger means is provided with a seal slidable relatively to the said inner cylindrical surface of the container.
Claim 11
Dependent Claim
56 words
A portioning apparatus in accordance with claim 5, wherein said path member is constituted by a tube having rectangular cross section and wherein the said low friction sliding means is constituted by a couple of ball bearings pressed against opposite corner portions of said rectangular tube, said tube being connected to said motor means for rotation.
Claim 12
Dependent Claim
57 words
A portioning apparatus in accordance with claim 9, wherein the connection between the said rectangulary shaped tube and the motor means is constituted by a flexible disc member arranged in the one end of the tube the centre portion of the disc being connected to an outgoing shaft of the motor means by means of a bushing.
Claim 13
Dependent Claim
36 words
A portioning apparatus in accordance with claim 10, wherein a spring is inserted between the said disc inside the tube and the end of said shaft for keeping the shaft in engagement with the plunger means.
Claim 14
Dependent Claim
28 words
A portioning apparatus in accordance with claim 10, wherein the outgoing shaft of the motor means carries a disc provided with indication marks along the periphery portion thereof.
Claim 15
Dependent Claim
35 words
A portioning apparatus in accordance with claim 12, wherein the last mentioned disc cooperates with a detecting device for detecting the number of indication marks which passes by upon rotation of the shaft in question.
Claim 16
Dependent Claim
30 words
A portioning apparatus in accordance with claim 13, wherein the disc is provided with holes defining said indication marks and the detecting device is constituted by a light-photo cell system.
Claim 17
Dependent Claim
18 words
A portioning apparatus in accordance with claim 14, wherein said light-photocell system is connected to a counting circuit.
Claim 18
Dependent Claim
36 words
A portioning apparatus in accordance with claim 15, wherein the connecting circuit is pre-settable and connected to operation circuits for the motor means in order to stop the motor means when said pre-set condition is fulfilled.
Claim 19
Dependent Claim
44 words
A portioning apparatus in accordance with claim 3, wherein the apparatus is included in a housing on top of which the container is clamped so that the means for applying an axial force is able to cooperate with the plunger means in the container.
Claim 20
Dependent Claim
19 words
A portioning apparatus in accordance with claim 5, wherein the motor means includes a motor and a reduction gear.
Claim 21
Dependent Claim
15 words
A portioning apparatus in accordance with claim 5, wherein the motor means includes a stepper-motor.
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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) | 1981-07-17 | 1982-01-16 | 1982-07-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-07-17 | 1986-01-16 | 1986-07-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-07-17 | 1990-01-16 | 1990-07-18 | $7700.00 | Window Closed / Lapsed |