| 摘要 |
1,271,740. Measuring fluid-flow. SCANS ASSOCIATES Inc. Aug. 11, 1969 [Sept. 19, 1968], No.40150/69. Heading G1R. In a variable area Venturi meter, such as is used for testing carburettors, a Venturi meter body 15, provided with a Venturi passage 16, has a control cone 25 coaxially mounted downstream and longitudinally movable into and out of the Venturi by a hand wheel 31 over a scale 28 in order to obtain and indicate a critical gas mass flow-rate. The device may be incorporated in a carburettor testing system, Fig. 1 (not shown) and the cone may be moved by an electric stepping motor, Fig. 6 (not shown), associated with an encoder for use in computers, pneumatically controlled machines, automatic and assembly devices and test and inspection apparatus. |
