Patent US1509695A successfully refreshed from Google Patents.
US3390815A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for accurate dosing of liquids
Assignee: Czech Academy of Sciences
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Filing: 1965-09-02
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Granted: 1968-07-02
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Expires: 1985-09-02
Abstract
No abstract record available.
Inventors
- 👤 Kavan Zdenek
- 👤 Stamberk Jiri
- 👤 Sevcik Stanislav
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:11
CPC Classifications
B; B01; B01L; B01L3/00; B01L3/02; B01L3/0203; B01L3/0206; F; F04; F04B; F04B53/00; F04B53/14; F04B9/00; F04B9/02; F16; F16H; F16H31/00; F16H31/003; F16H31/004; G; G01; G01F; G01F11/00; G01F11/02; G01F11/021; H; H01; H01Q; H01Q3/00; H01Q3/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
182 words
A DEVICE FOR ACCURATE DOSING OF A LIQUID COMPRISING, IN COMBINATION, A CONTAINER MEMBER HAVING AN OPEN END; PASSAGE MEANS COMMUNICATING WITH THE INTERIOR OF SAID CONTAINER MEMBER FOR FEEDING LIQUID TO BE DOSED THEREIN TO AND FOR DISCHARGING THE DOSED LIQUID THEREFROM; A PLUNGER MEMBER PROJECTING IN A SEALED MANNER THROUGH SAID OPEN END OF SAID CONTAINER MEMBER INTO THE LATTER; SUPPORT MEANS MOUNTING ONE OF SAID MEMBERS IN STATIONARY POSITION; A NUT FIXED TO THE OTHER OF SAID MEMBERS; A SCREW SPINDLE COAXIALLY ARRANGED WITH SAID NUT AND THREADINGLY ENGAGED THEREWITH; MEANS COOPERATING WITH SAID SPINDLE FOR CONTINUOUSLY APPLYING TORQUE THERETO TENDING TO TURN SAID SPINDLE IN ONE DIRECTION SO AS TO DISPLACE SAID OTHER MEMBER RELATIVE TO SAID STATIONARY MEMBER; A RATCHET WHEEL FIXED TO SAID SPINDLE; AND A PLUSE ACTUATED ESCAPE MECHANISM COOPERATING WITH SAID RATCHET WHEEL TO PERMIT DURING EACH ACTUATION THEREOF TURNING OF SAID RATCHET WHEEL AND SAID SPINDLE, UNDER THE INFLUENCE OF SAID TORQUE CONTINUOUSLY APPLIED TO THE LATTER, THROUGH AN ANGULAR DISTANCE EQUAL TO THE DISTANCE BETWEEN TWO SUCCESSSIVE TEETH OF SAID RATCHET WHEEL.
Claim 2
Independent Claim
182 words
A DEVICE FOR ACCURATE DOSING OF A LIQUID COMPRISING, IN COMBINATION, A CONTAINER MEMBER HAVING AN OPEN END; PASSAGE MEANS COMMUNICATING WITH THE INTERIOR OF SAID CONTAINER MEMBER FOR FEEDING LIQUID TO BE DOSED THEREIN TO AND FOR DISCHARGING THE DOSED LIQUID THEREFROM; A PLUNGER MEMBER PROJECTING IN A SEALED MANNER THROUGH SAID OPEN END OF SAID CONTAINER MEMBER INTO THE LATTER; SUPPORT MEANS MOUNTING ONE OF SAID MEMBERS IN STATIONARY POSITION; A NUT FIXED TO THE OTHER OF SAID MEMBERS; A SCREW SPINDLE COAXIALLY ARRANGED WITH SAID NUT AND THREADINGLY ENGAGED THEREWITH; MEANS COOPERATING WITH SAID SPINDLE FOR CONTINUOUSLY APPLYING TORQUE THERETO TENDING TO TURN SAID SPINDLE IN ONE DIRECTION SO AS TO DISPLACE SAID OTHER MEMBER RELATIVE TO SAID STATIONARY MEMBER; A RATCHET WHEEL FIXED TO SAID SPINDLE; AND A PLUSE ACTUATED ESCAPE MECHANISM COOPERATING WITH SAID RATCHET WHEEL TO PERMIT DURING EACH ACTUATION THEREOF TURNING OF SAID RATCHET WHEEL AND SAID SPINDLE, UNDER THE INFLUENCE OF SAID TORQUE CONTINUOUSLY APPLIED TO THE LATTER, THROUGH AN ANGULAR DISTANCE EQUAL TO THE DISTANCE BETWEEN TWO SUCCESSSIVE TEETH OF SAID RATCHET WHEEL.
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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) | 1971-07-02 | 1972-01-01 | 1972-07-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-07-02 | 1976-01-01 | 1976-07-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-07-02 | 1980-01-01 | 1980-07-02 | $7700.00 | Window Closed / Lapsed |