Swivel mounted pump with integral valve means

Details Swivel mounted pump with integral valve means Swivel mounted pump with integral valve means

1977-04-01

1978-05-30

Geoghegan, Edgar W.

Traversing hoists

Overhead

Cable

212 58R, 214132, 60477, B66C 2300

Patent

active

040919340

ABSTRACT:
A swivel mounted pump apparatus for a mine crane is provided having an integral fluid-flow control valve incorporated in the swivel mounting structure. The pump mechanism is a hand operated fluid pump which is mounted on an upright supporting spindle for selective swiveling movement to a desired operating position. Fluid interconnection of the pump mechanism to a fluid reservoir and actuating ram of the associated apparatus is achieved through internal passageways formed in the supporting spindle to permit operator control of fluid flow through the system. This valve may be selectively operated to enable either actuation of the ram by the mechanism or a reverse fluid flow in the system and to also provide protection to the apparatus from excessive fluid pressures that may build up through incorrect or improper use of the associated ram mechanism.

REFERENCES:
patent: 2700483 (1955-01-01), Cook et al.
patent: 3275296 (1966-09-01), Meyer
patent: 3848749 (1974-11-01), Anderson et al.

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