US3035888A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process and apparatus for obtaining a constant head of liquid
Assignee: Universal Oil Products Co
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Filing: 1960-10-31
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Granted: 1962-05-22
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Expires: 1980-10-31
Abstract
No abstract record available.
Inventors
- 👤 Lester G Massey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 04:16
CPC Classifications
G; G01; G01F; G01F25/00; G01F25/10; B; B01; B01J; B01J4/00; B01J4/008; G05; G05D; G05D7/00; G05D7/03; G05D9/00; Y; Y10; Y10T; Y10T137/00; Y10T137/0318; Y10T137/0324; Y10T137/0379; Y10T137/2713; Y10T137/2761; Y10T137/2931; Y10T137/3115; Y10T137/3127
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
134 words
2. THE METHOD FOR PROVIDING A CONSTANT-HEAD DRIVING FORCE FOR PASSING A FLOWING LIQUID STREAM TO A PROCESSING ZONE WHICH COMPRISES WITHDRAWING SAID FLOWING LIQUID TO SAID ZONE FROM THE LOWER PORTION OF A FIRST CAPACITY VESSEL CONTAINING AN INVENTORY OF SAID FLOWING LIQUID, CONTINUALLY INTRODUCING A GAS STREAM, SUBSTANTIALLY AT THE PRESSURE OF SAID ZONE, TO A POINT BENEATH THE SURFACE OF SAID INVENTORY OF FLOWIN LIQUID IN THE CAPACITY VESSEL INTRODUCAING ADDITIONAL QUANITIES OF SAID FLOWING LIQUID INTO SAID CAPACITY VESSEL AT A RATE LESS THAN THE RATE AT WHICH THE FLOWING LIQUID IS WITHDRAWN TO SAID ZONE, STOPPING THE WITHDRAWAL OF SAID FLOWING LIQUID BEFORE THE LEVEL THEREOF WITHIN SAID CAPACITY VESSEL FALLS BELOW THE HIGHER OF THE TWO POINTS REPRESENTING THE LIQUID WITHDRAWAL AND GAS INTRODUCTION AND WITHDRAWING SAID FLOWING
Claim 2
Dependent Claim
134 words
2. THE METHOD FOR PROVIDING A CONSTANT-HEAD DRIVING FORCE FOR PASSING A FLOWING LIQUID STREAM TO A PROCESSING ZONE WHICH COMPRISES WITHDRAWING SAID FLOWING LIQUID TO SAID ZONE FROM THE LOWER PORTION OF A FIRST CAPACITY VESSEL CONTAINING AN INVENTORY OF SAID FLOWING LIQUID, CONTINUALLY INTRODUCING A GAS STREAM, SUBSTANTIALLY AT THE PRESSURE OF SAID ZONE, TO A POINT BENEATH THE SURFACE OF SAID INVENTORY OF FLOWIN LIQUID IN THE CAPACITY VESSEL INTRODUCAING ADDITIONAL QUANITIES OF SAID FLOWING LIQUID INTO SAID CAPACITY VESSEL AT A RATE LESS THAN THE RATE AT WHICH THE FLOWING LIQUID IS WITHDRAWN TO SAID ZONE, STOPPING THE WITHDRAWAL OF SAID FLOWING LIQUID BEFORE THE LEVEL THEREOF WITHIN SAID CAPACITY VESSEL FALLS BELOW THE HIGHER OF THE TWO POINTS REPRESENTING THE LIQUID WITHDRAWAL AND GAS INTRODUCTION AND WITHDRAWING SAID FLOWING
References Cited (Backward Citations)
US2899969A
Cited
GB672047A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-05-21 | 1965-11-20 | 1966-05-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-05-21 | 1969-11-20 | 1970-05-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-05-21 | 1973-11-20 | 1974-05-22 | $7700.00 | Window Closed / Lapsed |