| 摘要 |
1,038,557. Gravity and inertia switches. W. A. HILL. April 30, 1964 [April 30, 1963], No. 16908/63. Heading H2B. [Also in Division G4] A gravity switch for a vehicle theft alarm (see Division G4) comprises a ball 5, Fig. 1 (not shown) in a concave holder 4, and surrounded by a corrugated mesh contact 14, the complete assembly being mounted on a ball joint 9. Displacement of the ball 5 by vibration closes the circuit between contact 14 and holder 4. |
