US3206072A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pipetting machine
Assignee: Individual
•
Filing: 1964-09-22
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Granted: 1965-09-14
•
Expires: 1984-09-22
Abstract
No abstract record available.
Inventors
- 👤 Calvin R Mencken
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 00:39
CPC Classifications
G; G01; G01N; G01N1/00; G01N1/28; G01N1/38; B; B01; B01L; B01L3/00; B01L3/02; B01L3/0203; B01L3/0206; Y; Y10; Y10S; Y10S128/00; Y10S128/01
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
134 words
AN AUTOMATIC PIPETTING MACHINE COMPRISING, IN COMBINATION, (A) A VARIABLE STROKE POSITIVE DISPLACEMENT PUMP, (B) MEANS FOR SELECTING A PREDETERMINED STROKE THEREFOR CORRESPONDING TO A PREDETERMINED AMOUNT OF MATERIAL TO BE PUMPED, AND (C) MEANS FOR OPERATING SAID PUMP FOR DELIVERING THE QUANTITY OF MATERIAL CORRESPONDING TO SAID SELECTED STROKE, WHEREIN SAID SELECTING MEANS COMPRISES A PISTON DRIVE ROD AND A PRESSURE ROD FOR ADVANCING SAID DRIVE ROD, AN ANVIL, AND A SERIES OF SELECTABLE SPACER MEANS MOVABLE TO OVERLIE SAID ANVIL, SAID OPERATING MEANS COMPRISING MEANS FOR ADVANCING SAID PRESSURE ROD, SAID PRESSURE ROD HAVING AN ABUTMENT SURFACE POSITIONED TO APPROACH SAID ANVIL AS SAID PISTON IS ADVANCED UNTIL IT ENGAGES THE SPACER MEANS OVERLYING SAID ANVIL, WHEREBY THE ADVANCING STROKE OF SAID PISTON IS LIMITED IN ACCORDANCE WITH THE SELECTED SPACER MEANS.
Claim 2
Dependent Claim
134 words
AN AUTOMATIC PIPETTING MACHINE COMPRISING, IN COMBINATION, (A) A VARIABLE STROKE POSITIVE DISPLACEMENT PUMP, (B) MEANS FOR SELECTING A PREDETERMINED STROKE THEREFOR CORRESPONDING TO A PREDETERMINED AMOUNT OF MATERIAL TO BE PUMPED, AND (C) MEANS FOR OPERATING SAID PUMP FOR DELIVERING THE QUANTITY OF MATERIAL CORRESPONDING TO SAID SELECTED STROKE, WHEREIN SAID SELECTING MEANS COMPRISES A PISTON DRIVE ROD AND A PRESSURE ROD FOR ADVANCING SAID DRIVE ROD, AN ANVIL, AND A SERIES OF SELECTABLE SPACER MEANS MOVABLE TO OVERLIE SAID ANVIL, SAID OPERATING MEANS COMPRISING MEANS FOR ADVANCING SAID PRESSURE ROD, SAID PRESSURE ROD HAVING AN ABUTMENT SURFACE POSITIONED TO APPROACH SAID ANVIL AS SAID PISTON IS ADVANCED UNTIL IT ENGAGES THE SPACER MEANS OVERLYING SAID ANVIL, WHEREBY THE ADVANCING STROKE OF SAID PISTON IS LIMITED IN ACCORDANCE WITH THE SELECTED SPACER MEANS.
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) | 1968-09-13 | 1969-03-15 | 1969-09-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-09-13 | 1973-03-15 | 1973-09-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-09-13 | 1977-03-15 | 1977-09-14 | $7700.00 | Window Closed / Lapsed |