Internal insulation of containers for liquids having lower boiling point than atmospheric temperature
Abstract
Abstract 842,719. Storing gases under pressure. LORENTZEN, H. L. Sept. 13, 1956 [Sept. 16, 1955], No. 28051/56. Class 8(2). A container for a liquefied gas such as methane is insulated by vapour formed from the liquid in passages 3 formed between lamellae 2, of metal, synthetic resin, paper or a woven material with a dark rough surface, stuck to the inner surface of the container wall 1. The axes of the passages 3 may be perpendicular to the wall 1 or oblique as shown and the passages are small in order to hinder the formation of convection currents and may be of circular, square or hexagonal cross-section. In Fig. 2, lamellae are shown which are so corrugated and joined that the main passages 3 are of circular section. Rectangular units of insulation or hexagonal units with frames 5, Fig. 4, may be formed. The passages may have constrictions or be covered with a net. Local groups of cells may intercommunicate. Specification 789,755 is referred to.
Inventors
- 👤 Lorentzen Hans Ludvig
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) | 1963-11-01 | 1964-05-02 | 1964-11-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-11-01 | 1968-05-02 | 1968-11-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-11-01 | 1972-05-02 | 1972-11-01 | $7700.00 | Window Closed / Lapsed |