Overload safety device

Details Overload safety device Overload safety device

1974-09-17

1976-04-20

Maslousky, Paul E.

Cutting

Means to drive or to guide tool

With transmission yieldable on overload

83627, 83639, 91398, B26D 722

Patent

active

039510255

ABSTRACT:
An overload safety device having a housing reciprocally movable through forward and reverse strokes of a set length. The housing has a cylinder and a piston mounted for reciprocal movement in the cylinder between a normal extended position and a retracted position. Fluid pressure is directed against one side of the piston for releasably holding the piston in its normal extended position. The piston has a rod to which a tool is attached at one end for performing an operation on a work piece upon reciprocal movement of the housing. If the tool should strike an obstruction, a slight displacement of the piston relative to the housing away from its normal extended position discontinues the fluid pressure directed against one side of the piston and directs it against the opposite side of the piston for rapidly moving the piston to its retracted position. The overload safety device may further be operated as a double acting cylinder.

REFERENCES:
patent: 1499569 (1924-07-01), Bailly
patent: 2033181 (1936-03-01), Case
patent: 2438951 (1948-04-01), Stephens
patent: 2783838 (1957-03-01), Ericson et al.
patent: 3178983 (1965-04-01), Brunson
patent: 3190141 (1965-06-01), Schatter et al.

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