| 摘要 |
<p>PCT No. PCT/FR80/00068 Sec. 371 Date Dec. 22, 1980 Sec. 102(e) Date Dec. 22, 1980 PCT Filed Apr. 30, 1980 PCT Pub. No. WO80/02496 PCT Pub. Date Nov. 27, 1980.The device comprises a steam-escape duct (1) terminated by a valve-seat (3, 4). A shut-off surface (71, 72), realized in a cap (65) at the bottom of an axial cavity (8) slidably mounted on the duct (1), rests, in the service conditions, on the seat (3, 4). The cap (65) is weighted such that its center of gravity is located below the seat (3, 4). The axial cavity (8) is connected to the outside by two eccentric vents (70) causing the cap (65) to rotate by reaction of the steam which traverses them as soon as the cooking-pressure is reached. The device comprises an element (73) permanently attached to the cap (65) and manually displaceable between two positions each of which determines a different lifting pressure for the cap (65) in relation to the duct (1). Use for permitting easy adaptation of the cooking pressure to the kind of food.</p> |
