Safety push rod assemblies

Details Safety push rod assemblies Safety push rod assemblies

1980-12-05

1982-05-25

Schmidt, Frederick R.

Fluent material handling, with receiver or receiver coacting mea

Combined

24211N, 74527, 141150, 141172, 141275, B65B 304

Patent

active

043311865

ABSTRACT:
A safety push rod assembly includes a vertical sleeve adapted to extend through the marginal portion of the bonnet of a rotary container filling machine, in which the sleeve is rigidly mounted. Slidably mounted in the sleeve and extending above it is a tubular upper rod that supports a container rest, and slidably mounted in the upper rod and extending down below the sleeve is a lower rod provided with a transverse passage therethrough inside the upper rod, with a detent ball in each end of the passage and with an axial bore extending from the upper end of the rod down to the transverse passage. In the lower end of the bore and resting on both detent balls is a center ball pressed downwardly by a coil spring compressed between that ball and a stop in the upper end of the bore for urging the detent balls into engagement with the encircling upper rod that is provided with an annular groove receiving projecting portions of the detent balls to thereby normally hold the push rod assembly in extended position. The upper rod is movable downwardly around the lower rod to collapse the assembly if the load on the container rest overcomes the resistance of the detent balls to being forced toward each other against the resistance of the coil spring.

REFERENCES:
patent: 2907357 (1959-10-01), Sandhage et al.

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