Fluid handling – Control by change of position or inertia of system
Patent
1988-03-07
1990-02-27
Nilson, Robert G.
Fluid handling
Control by change of position or inertia of system
200 6145R, 251 66, F16K 1736
Patent
active
049037200
ABSTRACT:
A shock activated shut-off device which can be used in any position includes a housing, a drive member rotatably mounted within the housing, a first member movable rectilinearly from a first position to a second position and a second member movable rectilinearly from a third position to a fourth position. An inertia ball engages the first member to move it from the first position to the second position in response to a vibration or shock imparted to the housing, and movement of the first member causes movement of a trigger ball disposed between the first member and the second member. Movement of the trigger ball allows the second member to move from the third position to the fourth position and thus to release engagement between a locking ball and a locking ball receiving seat in the housing. A torsion spring is connected between the drive member and the housing, whereby the drive member can be rotated against the force of the torsion spring to load the device. In a modification, the locking ball is replaced with a cam which is moved when the second member moves from the third to the fourth position to thereby close an electric switch.
REFERENCES:
patent: 3878858 (1975-04-01), Yamada
patent: 3994359 (1976-11-01), Smitley
patent: 4103697 (1978-08-01), Kiesow
patent: 4429704 (1984-02-01), Jones
patent: 4475565 (1984-10-01), Keller
patent: 4742839 (1988-05-01), Stock
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