US3205825A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Proportioning pump
Assignee: Individual
•
Filing: 1963-11-18
•
Granted: 1965-09-14
•
Expires: 1983-11-18
Abstract
No abstract record available.
Inventors
- 👤 Kojabashian Charles
- 👤 John S Howland
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 10:45
CPC Classifications
G; G05; G05D; G05D11/00; G05D11/006; B; B67; B67D; B67D1/00; B67D1/08; B67D1/10; B67D1/101; B67D1/105; B67D1/106; B67D1/107; G01; G01F; G01F11/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
117 words
A PROPORTIONING PUMP COMPRISING A GENERALLY CYLINDRICAL HOUSING CLOSED AT ONE END, A GENERALLY CYLINDRICAL POST EXTENDING INTO THE HOUSING FROM ITS OTHER END AND ORIENTED WITH ITS AXIS PARALLEL TO THE HOUSING AXIS, SAID POST HAVING AN INNER END WHICH TERMINATES SHORT OF THE CLOSED END OF THE HOUSING, A PISTON SLIDABLY MOUNTED ON THE POST AND HAVING A CENTRAL PORTION WHICH COVERS THE END OF THE POST, SAID PORTION AND POST COOPERATING TO DEFINE A CHAMBER WITHIN THE HOUSING WHICH VARIES IN VOLUME WITH MOVEMENT OF THE PISTON ON THE POST, A DIAPHRAGM SECURED TO THE PISTON AND THE HOUSING AND COOPERATING WITH THE PISTON TO DIVIDE THE INTERIOR OF THE HOUSING INTO TWO COMPARTMENTS,
Claim 2
Dependent Claim
117 words
A PROPORTIONING PUMP COMPRISING A GENERALLY CYLINDRICAL HOUSING CLOSED AT ONE END, A GENERALLY CYLINDRICAL POST EXTENDING INTO THE HOUSING FROM ITS OTHER END AND ORIENTED WITH ITS AXIS PARALLEL TO THE HOUSING AXIS, SAID POST HAVING AN INNER END WHICH TERMINATES SHORT OF THE CLOSED END OF THE HOUSING, A PISTON SLIDABLY MOUNTED ON THE POST AND HAVING A CENTRAL PORTION WHICH COVERS THE END OF THE POST, SAID PORTION AND POST COOPERATING TO DEFINE A CHAMBER WITHIN THE HOUSING WHICH VARIES IN VOLUME WITH MOVEMENT OF THE PISTON ON THE POST, A DIAPHRAGM SECURED TO THE PISTON AND THE HOUSING AND COOPERATING WITH THE PISTON TO DIVIDE THE INTERIOR OF THE HOUSING INTO TWO COMPARTMENTS,
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 |