Guelton
Abstract
Abstract 951,136. Revaporizing liquefied gas. AIR LIQUIDE S.A. POUR L'ETUDE ET L'EXPLOITATION DES PROCEDES GEORGES CLAUDE. Sept. 29, 1961 [Oct. 12, 1960], No. 35325/61. Heading F4P. A method of defrosting the external surface area of an ambient air-heated evaporator for liquefied gas comprises continuously sweeping the surface to remove the frost as it is formed. The evaporator comprises a series of spacedparallel plates 2 to which are secured coils (not shown) through which flows the gas. Holders 11 carrying brushes 12 are fixed at their ends to endless chains 10 which are driven by a reduction unit 8; the brushes thus circulate in the spaces between the plates to remove frost forming on the latter. The plates are enclosed in a jacket, Fig. 1 (not shown), and atmospheric air is impelled between the plates by a fan, the delivery temperature of the gas being auto. matically regulated by movable flaps arranged to deflect from the plates a variable fraction of the air delivered by the fan.
Inventors
No inventors recorded.
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) | 1967-03-17 | 1967-09-16 | 1968-03-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-03-17 | 1971-09-16 | 1972-03-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-03-17 | 1975-09-16 | 1976-03-17 | $7700.00 | Window Closed / Lapsed |