Lpg tankship refrigeration system
Abstract
Abstract 843,333. Refrigerating. CALIFORNIA RESEARCH CORPORATION. Sept. 18, 1958 [Sept. 26. 1957], No. 29962/58. Class 29 [Also in Group XXVIII] Refrigerant, e.g. liquid propane is circulated through tubes 15 within a propane storage tank 10 (see Group XXVIII) by compressors 20 drawing vapour from a suction vessel 21, and discharging at 180 p.s.i. through a condenser 22 to a liquid receiver 24 and from which liquid propane is passed through a reducing valve 25 to a flash drum 26 at about 15 p.s.i. and from thence through a line 18 and control valve 32 to a lower header 17 of the tubes 15 an upper header 16 of which is connected by a line 19 to the suction vessel 21 which is also connected to the vapour space of the flash drum 21. The compressors 20 are primed by drawing propane vapour from above the liquid in the tank 10 through a duct 33 and control valve 34 discharging into the line 19.
Inventors
- 👤 Frank L Maker
Bibliographic Details
Claims Analysis
Total Claims: 0References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-11-15 | 1964-05-16 | 1964-11-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-11-15 | 1968-05-16 | 1968-11-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-11-15 | 1972-05-16 | 1972-11-15 | $7700.00 | Window Closed / Lapsed |