US3085719A
Expired / Lapsed
US
⏱️ 0.0 years remaining
weber iii
Assignee: —
•
Filing: —
•
Granted: 1963-04-16
•
Expires: 1980-04-16
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 04:13
CPC Classifications
F; F04; F04B; F04B13/00; G; G01; G01F; G01F11/00; G01F11/02; G01F11/021; G01F11/023
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
161 words
IN A METERING LIQUID DISPENSER, THE COMBINATION OF AN UPRIGHT BODY HAVING A CYLINDRICAL PISTON CHAMBER AND A TOP PORTION PROVIDED WITH A CENTRAL BORE, A FREE PISTON SLIDABLE IN SAID CHAMBER AND PROVIDED WITH AN ALINED CENTRAL BORE, SAID PISTON BEING NORMALLY HELD AGAINST RECIPROCATION BY THE FRICTIONAL ENGAGEMENT OF IT WITH THE WALL OF SAID CHAMBER, A RECIPROCABLE COMBINED PISTON-ACTUATOR AND VALVE ELEMENT HAVING AN UPPER PART SLIDABLE IN THE BORE OF SAID TOP PORTION AND A LOWER PART SLIDABLE IN THE BORE OF SAID PISTON AND EXTENDING BELOW THE LATTER, SAID ELEMENT HAVING MEANS ENGAGEABLE WITH OPPOSITE SIDES OF SAID PISTON TO MOVE THE SAME DURING AT LEAST A PORTION OF EACH STROKE OF THE ELEMENT, SAID ELEMENT ALSO HAVING UPPER AND LOWER LIQUID PASSAGEWAYS COACTING RESPECTIVELY WITH SAID TOP PORTION AND WITH SAID PISTON FOR CONTROLLING THE FLOW OF A LIQUID FROM A SUPPLY SOURCE INTO SAID CHAMBER ABOVE THE PISTON AND FOR CONTROLLING THE DISCHARGE OF
Claim 2
Dependent Claim
161 words
IN A METERING LIQUID DISPENSER, THE COMBINATION OF AN UPRIGHT BODY HAVING A CYLINDRICAL PISTON CHAMBER AND A TOP PORTION PROVIDED WITH A CENTRAL BORE, A FREE PISTON SLIDABLE IN SAID CHAMBER AND PROVIDED WITH AN ALINED CENTRAL BORE, SAID PISTON BEING NORMALLY HELD AGAINST RECIPROCATION BY THE FRICTIONAL ENGAGEMENT OF IT WITH THE WALL OF SAID CHAMBER, A RECIPROCABLE COMBINED PISTON-ACTUATOR AND VALVE ELEMENT HAVING AN UPPER PART SLIDABLE IN THE BORE OF SAID TOP PORTION AND A LOWER PART SLIDABLE IN THE BORE OF SAID PISTON AND EXTENDING BELOW THE LATTER, SAID ELEMENT HAVING MEANS ENGAGEABLE WITH OPPOSITE SIDES OF SAID PISTON TO MOVE THE SAME DURING AT LEAST A PORTION OF EACH STROKE OF THE ELEMENT, SAID ELEMENT ALSO HAVING UPPER AND LOWER LIQUID PASSAGEWAYS COACTING RESPECTIVELY WITH SAID TOP PORTION AND WITH SAID PISTON FOR CONTROLLING THE FLOW OF A LIQUID FROM A SUPPLY SOURCE INTO SAID CHAMBER ABOVE THE PISTON AND FOR CONTROLLING THE DISCHARGE OF
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) | 1966-04-15 | 1966-10-15 | 1967-04-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-04-15 | 1970-10-15 | 1971-04-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-04-15 | 1974-10-15 | 1975-04-16 | $7700.00 | Window Closed / Lapsed |