US3106320A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High-low pressure pump
Assignee: Stewart Warner Corp
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Filing: 1959-10-29
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Granted: 1963-10-08
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Expires: 1979-10-29
Abstract
No abstract record available.
Inventors
- 👤 Thomas A Campbell
- 👤 Jose L Luna
- 👤 Fred R Meinardus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 04:46
CPC Classifications
F; F16; F16N; F16N13/00; F16N13/02; F16N13/06; F16N13/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
163 words
A HIGH AND LOW OUTPUT PRESSURE PUMP FOR SUBSTANTIALLY INCOMPRESSIBLE FLUID DISPOSED WITHIN A VESSEL, COMPRISING A FIRST STATIONARY CYLINDER SECURED WITHIN THE VESSEL AND ADAPTED TO HAVE AT LEAST THE LOWER PORTION THEREOF SUBMERGED IN THE FLUID, A PISTON ROD ADAPTED TO RECIPROCATE AND ROTATE WITHIN SAID FIRST CYLINDER SPACED THEREFROM AND PROJECTING OUTSIDE OF THE VESSEL THROUGH A TOP OPENING THEREIN, PISTON MEANS SLIDABLY MOUNTED ON THE LOWER END PORTION OF SAID PISTON ROD IN SEALING RELATION THERETO AND TO THE LOWER PORTION OF SAID FIRST CYLINDER, AND FORMING WITHIN SAID LOWER PORTION OF THE FIRST CYLINDER A PUMPING CHAMBER, INLET AND OUTLET CHECK MEANS FOR THE FIRST CYLINDER ADAPTED TO CHECK FLUID WITHIN THE VESSEL TO AND FROM THE PUMPING CHAMBER, A SECOND CYLINDER POSITIONED WITHIN THE REMAINING UPPER PORTION OF SAID FIRST CYLINDER AND SURROUNDING SAID RECIPROCATING PISTON ROD ADJACENT SAID PISTON MEANS, SAID REMAINING PORTION OF THE FIRST CYLINDER AND THE PISTON MEANS REMOTE OF THE PUMPING CHAMBER
Claim 2
Dependent Claim
163 words
A HIGH AND LOW OUTPUT PRESSURE PUMP FOR SUBSTANTIALLY INCOMPRESSIBLE FLUID DISPOSED WITHIN A VESSEL, COMPRISING A FIRST STATIONARY CYLINDER SECURED WITHIN THE VESSEL AND ADAPTED TO HAVE AT LEAST THE LOWER PORTION THEREOF SUBMERGED IN THE FLUID, A PISTON ROD ADAPTED TO RECIPROCATE AND ROTATE WITHIN SAID FIRST CYLINDER SPACED THEREFROM AND PROJECTING OUTSIDE OF THE VESSEL THROUGH A TOP OPENING THEREIN, PISTON MEANS SLIDABLY MOUNTED ON THE LOWER END PORTION OF SAID PISTON ROD IN SEALING RELATION THERETO AND TO THE LOWER PORTION OF SAID FIRST CYLINDER, AND FORMING WITHIN SAID LOWER PORTION OF THE FIRST CYLINDER A PUMPING CHAMBER, INLET AND OUTLET CHECK MEANS FOR THE FIRST CYLINDER ADAPTED TO CHECK FLUID WITHIN THE VESSEL TO AND FROM THE PUMPING CHAMBER, A SECOND CYLINDER POSITIONED WITHIN THE REMAINING UPPER PORTION OF SAID FIRST CYLINDER AND SURROUNDING SAID RECIPROCATING PISTON ROD ADJACENT SAID PISTON MEANS, SAID REMAINING PORTION OF THE FIRST CYLINDER AND THE PISTON MEANS REMOTE OF THE PUMPING CHAMBER
References Cited (Backward Citations)
US753530A
Cited
GB190106539A
Cited
US717084A
Cited
FR331504A
Cited
FR331641A
Cited
US1263401A
Cited
US1794356A
Cited
US2083854A
Cited
US2204838A
Cited
US2387233A
Cited
US2510972A
Cited
US2513631A
Cited
US2513461A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-10-07 | 1967-04-08 | 1967-10-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-10-07 | 1971-04-08 | 1971-10-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-10-07 | 1975-04-08 | 1975-10-08 | $7700.00 | Window Closed / Lapsed |