Multiple-stage integrating accelerometer

Details Multiple-stage integrating accelerometer Multiple-stage integrating accelerometer

1984-06-27

1986-03-04

Levy, Stewart J.

Electricity: circuit makers and breakers

Special application

Change of inclination or of rate of motion responsive

102262, H01H 3514, F42C 1524

Patent

active

045741689

ABSTRACT:
An accelerometer assembly is provided for use in activating a switch in response to multiple acceleration pulses in series. The accelerometer includes a housing forming a chamber. An inertial mass or piston is slidably disposed in the chamber and spring biased toward a first or reset position. A damping system is also provided to damp piston movement in response to first and subsequent acceleration pulses. Additionally, a cam, including a Z-shaped slot, and cooperating follower pin slidably received therein are mounted to the piston and the housing. The middle or cross-over leg of the Z-shaped slot cooperates with the follower pin to block or limit piston movement and prevent switch activation in response to a lone acceleration pulse. The switch of the assembly is only activated after two or more separate acceleration pulses are sensed and the piston reaches the end of the chamber opposite the reset position.

REFERENCES:
patent: 2424390 (1947-07-01), Ferris
patent: 3771457 (1973-11-01), Buxton
patent: 3919941 (1975-11-01), Breed et al.
patent: 4002077 (1977-01-01), Taplin
patent: 4345124 (1982-08-01), Abbin et al.

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