US3234882A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Intensifier assembly system and method
Assignee: Dart Industries Inc
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Filing: 1964-06-03
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Granted: 1966-02-15
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Expires: 1984-06-03
Abstract
No abstract record available.
Inventors
- 👤 Robert M Douglas
- 👤 Darold P Slater
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 08:22
CPC Classifications
F; F04; F04B; F04B9/00; F04B9/08; F04B9/10; F04B9/109; F04B9/117; F04B9/1176; F04B9/1178; F01; F01L; F01L25/00; F01L25/08; F15; F15B; F15B3/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
182 words
IN AN INTENSIFIER ASSEMBLY SYSTEM COMPRISING AT LEAST TWO SINGLE ACTING INTENSIFIER UNITS HAVING LOW AND HIGH PRESSURE PISTON FACES, A HIGH PRESSURE MANIFOLD AND CONDUIT CONNECTIONS FROM EACH OF SAID HIGH PRESSURE PISTON FACES TO THE HIGH PRESSURE MANIFOLD, CONDUIT CONNECTIONS FOR SUPPLYING A FLUID TO SAID HIGH PRESSURE PISTON FACES AND CONDUIT CONNECTIONS FOR SUPPLYING A HYDRAULIC FLUID TO SAID LOW PRESSURE PISTON FACES, THE IMPROVEMENT COMPRISING A NOVEL ARRANGEMENT OF MEANS FOR ESTABLISHING A PLURALITY OF HYDRAULIC FLUID PRESSURE LEVELS FOR USE IN OPERATING SAID INTENSIFIER UNITS IN SEQUENCE IN DISCHARGE, SUCTION AND RECOMPRESSION STROKES, SAID IMPROVEMENT COMPRISING THE COMBINATION OF MEANS FOR ESTABLISHING A FIRST HYDRAULIC FLUID PRESSURE LEVEL P1 UPSTREAM OF SAID INTENSIFIER UNITS AND A CONDUIT FOR DELIVERY OF SAID P1 FLUID PRESSURE LEVEL TO THE DISCHARGE STROKE OF ONE OF SAID INTENSIFIER, A CONDUIT FOR BY-PASSING HYDRAULIC FLUID IN EXCESS OF THE REQUIRED FOR SAID P1 FLUID PRESSURE LEVEL TO A SECOND FLUID PRESSURE LEVEL P2, A VALVE IN ASSOCIATION WITH A FIXED FORCE CONSTANT FOR MAINTAINING SAID P2 FLUID PRESSURE LEVEL BELOW SAID P1
Claim 2
Dependent Claim
182 words
IN AN INTENSIFIER ASSEMBLY SYSTEM COMPRISING AT LEAST TWO SINGLE ACTING INTENSIFIER UNITS HAVING LOW AND HIGH PRESSURE PISTON FACES, A HIGH PRESSURE MANIFOLD AND CONDUIT CONNECTIONS FROM EACH OF SAID HIGH PRESSURE PISTON FACES TO THE HIGH PRESSURE MANIFOLD, CONDUIT CONNECTIONS FOR SUPPLYING A FLUID TO SAID HIGH PRESSURE PISTON FACES AND CONDUIT CONNECTIONS FOR SUPPLYING A HYDRAULIC FLUID TO SAID LOW PRESSURE PISTON FACES, THE IMPROVEMENT COMPRISING A NOVEL ARRANGEMENT OF MEANS FOR ESTABLISHING A PLURALITY OF HYDRAULIC FLUID PRESSURE LEVELS FOR USE IN OPERATING SAID INTENSIFIER UNITS IN SEQUENCE IN DISCHARGE, SUCTION AND RECOMPRESSION STROKES, SAID IMPROVEMENT COMPRISING THE COMBINATION OF MEANS FOR ESTABLISHING A FIRST HYDRAULIC FLUID PRESSURE LEVEL P1 UPSTREAM OF SAID INTENSIFIER UNITS AND A CONDUIT FOR DELIVERY OF SAID P1 FLUID PRESSURE LEVEL TO THE DISCHARGE STROKE OF ONE OF SAID INTENSIFIER, A CONDUIT FOR BY-PASSING HYDRAULIC FLUID IN EXCESS OF THE REQUIRED FOR SAID P1 FLUID PRESSURE LEVEL TO A SECOND FLUID PRESSURE LEVEL P2, A VALVE IN ASSOCIATION WITH A FIXED FORCE CONSTANT FOR MAINTAINING SAID P2 FLUID PRESSURE LEVEL BELOW SAID P1
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) | 1969-02-14 | 1969-08-16 | 1970-02-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-14 | 1973-08-16 | 1974-02-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-14 | 1977-08-16 | 1978-02-15 | $7700.00 | Window Closed / Lapsed |