US3266782A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Duplex agitator
Assignee: Universal Oil Products Co
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Filing: 1964-07-08
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Granted: 1966-08-16
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Expires: 1984-07-08
Abstract
No abstract record available.
Inventors
- 👤 John G Gatsis
- 👤 Urban Peter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:46
CPC Classifications
B; B01; B01F; B01F31/00; B01F31/44; B01F31/441
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
185 words
FLUID MIXING APPARATUS COMPRISING IN COMBINATION: (1) TWO FLUID-TIGHT LIQUID-RETAINING VESSELS, EACH OF SAID VESSELS COMPRISING (A) A CLOSED PLUNGER HOUSING OPENING INWARDLY OF THE VESSEL, (B) A RECIPROCABLE PLUNGER WITHIN SAID HOUSING, (C) SPRING MEANS OPERATIVELY ENGAGING SAID PLUNGER AND ARRANGED TO OPPOSE THE INWARD MOVEMENT OF THE PLUNGER, (D) A SHAFT CONNECTED TO SAID PLUNGER AND ADAPTED TO EXTEND INTO A BODY OF LIQUID WITHIN THE VESSEL, (E) A TRANSVERSELY ENLARGED MIXING MEMBER ATTACHED TO SAID SHAFT AND POSITONED TO BE WHOLLY IMMERSED IN SAID LIQUID; (2) A PLUNGER DRIVE MEANS COMPRISING (A) A PISTON CHAMBER, (B) A PAIR OF SPACED RECIPROCABLE PISTONS WITHIN SAID CHAMBER, (C) MEANS MECHANICALLY CONNECTING SAID PISTONS, (D) RECIPROCATING DRIVE MEANS COUPLED TO SAID CONNECTING MEANS FOR ALTERNATELY AND SIMULTANEOUSLY ADVANCING AND RETRACTING THE PISTONS IN OPPOSED RELATIONSHIP; (3) A CONDUIT CONNECTING EACH END OF SAID PISTON CHAMBER TO A CORRESPONDING ONE OF SAID PLUNGER HOUSINGS; AND (4) HYDRAULIC FLUID FILLING THE SPACES DEFINED BY THE PLUNGER HOUSINGS AND THEIR RESPECTIVE PLUNGERS, SAID CONDUITS, AND THE SPACES BETWEEN THE END WALLS OF SAID PISTON CHAMBER AND THE PISTONS.
Claim 2
Dependent Claim
185 words
FLUID MIXING APPARATUS COMPRISING IN COMBINATION: (1) TWO FLUID-TIGHT LIQUID-RETAINING VESSELS, EACH OF SAID VESSELS COMPRISING (A) A CLOSED PLUNGER HOUSING OPENING INWARDLY OF THE VESSEL, (B) A RECIPROCABLE PLUNGER WITHIN SAID HOUSING, (C) SPRING MEANS OPERATIVELY ENGAGING SAID PLUNGER AND ARRANGED TO OPPOSE THE INWARD MOVEMENT OF THE PLUNGER, (D) A SHAFT CONNECTED TO SAID PLUNGER AND ADAPTED TO EXTEND INTO A BODY OF LIQUID WITHIN THE VESSEL, (E) A TRANSVERSELY ENLARGED MIXING MEMBER ATTACHED TO SAID SHAFT AND POSITONED TO BE WHOLLY IMMERSED IN SAID LIQUID; (2) A PLUNGER DRIVE MEANS COMPRISING (A) A PISTON CHAMBER, (B) A PAIR OF SPACED RECIPROCABLE PISTONS WITHIN SAID CHAMBER, (C) MEANS MECHANICALLY CONNECTING SAID PISTONS, (D) RECIPROCATING DRIVE MEANS COUPLED TO SAID CONNECTING MEANS FOR ALTERNATELY AND SIMULTANEOUSLY ADVANCING AND RETRACTING THE PISTONS IN OPPOSED RELATIONSHIP; (3) A CONDUIT CONNECTING EACH END OF SAID PISTON CHAMBER TO A CORRESPONDING ONE OF SAID PLUNGER HOUSINGS; AND (4) HYDRAULIC FLUID FILLING THE SPACES DEFINED BY THE PLUNGER HOUSINGS AND THEIR RESPECTIVE PLUNGERS, SAID CONDUITS, AND THE SPACES BETWEEN THE END WALLS OF SAID PISTON CHAMBER AND THE PISTONS.
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) | 1969-08-15 | 1970-02-14 | 1970-08-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-15 | 1974-02-14 | 1974-08-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-15 | 1978-02-14 | 1978-08-16 | $7700.00 | Window Closed / Lapsed |