Fluid handling – Control by change of position or inertia of system
Patent
1975-06-09
1976-10-05
Nilson, Robert G.
Fluid handling
Control by change of position or inertia of system
123198DB, 180104, F16K 1736
Patent
active
039838900
ABSTRACT:
A roll over valve construction having a housing provided with an inlet and an outlet separated by a valve seat. A pair of balls are carried by the housing so that one thereof can move to close the valve seat when the valve construction is rotated from its normal position to a certain other rotational position thereof, the pair of balls normally being held away from the valve seat by gravity when the valve construction is between the normal position thereof and the certain position thereof. A larger ball member is carried by the housing for preventing the first pair of balls from moving to close the valve seat when the valve construction is between the normal position and the certain position thereof even though the valve construction is being subjected to shocks, impacts, bouncing, etc. that would normally cause one of the pair of balls to move to close the valve seat.
REFERENCES:
patent: 2933095 (1960-04-01), Rumsey
patent: 3407827 (1968-10-01), Follett
patent: 3807423 (1974-04-01), Engel
patent: 3910301 (1975-10-01), Kuss
Nilson Robert G.
Robertshaw Controls Company
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