US2728196A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Volatile liquid dispensing system
Assignee: Individual
•
Filing: 1954-11-26
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Granted: 1955-12-27
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Expires: 1974-11-26
Abstract
No abstract record available.
Inventors
- 👤 Alan W Bowser
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 23:45
CPC Classifications
B; B67; B67D; B67D7/00; B67D7/06; B67D7/38; B67D7/76; B67D7/763; B67D7/78; Y; Y10; Y10T; Y10T137/00; Y10T137/2931; Y10T137/3003; Y10T137/3084; Y10T137/309; Y10T137/3099
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
131 words
IN A VOLATILE LIQUID DISPENSING SYSTEM, A LIQUID STORAGE TANK; TWO OR MORE DISPENSERS; A PUMP FOR SUPPLYING LIQUID FROM THE TANK TO THE DISPENSERS; MEANS FOR DRIVING THE PUMP; EACH DISPENSER INCLUDING MEANS CONTROLLING OPERATION OF THE PUMP DRIVING MEANS INDEPENDENTLY OF THE CONTROL MEANS OF THE OTHER DISPENSER, A PRESSURE DIFFERENTIAL VALVE FOR MAINTAINING A CONSTANT DIFFERNTAIL BETWEEN THE PRESSURE OF THE LIQUID BEING DISPENSED AND THE VAPOR PRESSURE IN SAID TANK, VAPOR SEPARATING MEANS BETWEEN SAID PUMP AND VALVE, A VAPOR LINE CONNECTING SAID TANK, VALVE AND VAPOR SEPARATING MEANS, AND A VALVE ACTUATED BY THE CONTROL MEANS AND CONNECTED IN THE VAPOR LINE FOR SHUTTING OFF COMMUNICATION OF THE PRESSURE DIFFERENTIAL VALVE AND VAPOR SEPARATING MEANS WITH SAID TANK TO PREVENT OPENING OF THE PRESSURE DIFFERENTIAL VALVE.
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) | 1958-12-26 | 1959-06-27 | 1959-12-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-12-26 | 1963-06-27 | 1963-12-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-12-26 | 1967-06-27 | 1967-12-27 | $7700.00 | Window Closed / Lapsed |