Hydraulic fuse

Details Hydraulic fuse Hydraulic fuse

1995-12-18

1997-06-03

Lee, Kevin

Fluid handling

Line condition change responsive valves

Bi-directional flow valves

137498, 251 16, F16K 1726

Patent

active

056344899

ABSTRACT:
An improved hydraulic fuse to control hydraulic fluid flow through the fuse comprising an outer body; an annular metering body cylinder within the outer body and defining a bore, and a flow control port, whereby a flow path is defined between the outer body and the metering body cylinder and to the port; a piston slidable longitudinally in the bore to control flow through the port; first and second flow control members which are relatively slidable longitudinally in the outer body, and in the paths of fluid flow to the port, and to the piston; a threshold spring urging the first member in one direction longitudinally and a metering spring urging the second member in the opposite direction longitudinally; the members and springs cooperating to effect forward flow to the flow control port along the path as forward flow increases to level at which a portion of the flow is diverted to act on the piston, causing the piston to move toward the flow control port and to close the port.

REFERENCES:
patent: 4655245 (1987-04-01), Gellerson
patent: 4819688 (1989-04-01), Field
patent: 4962786 (1990-10-01), Gellerson

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