| 摘要 |
492,614. Rotary pumps. BHONZA VIA SOC. ANON. April 2, 1937, No. 9463. Convention date, April 2, 1936. [Class 110 (ii)] [Also in Group XXVIII] In an installation for use in aircraft in which instruments 1 are operated from a compressed-air or vacuum tank 2, the output of the compressor or suction pump 5 is controlled by governing its speed in accordance with the altitude. For this purpose the electromotor 6 driving the compressor is controlled by a rheostat 8, the arm 7 of which is operated by a manometric capsule 9. A safety-valve may be provided for preventing excess pressure or vacuum. |
