Remote-control device for a crane
AssigneeGarden State Engine & Equipment Co., Inc.
InventorFrank P. Spalluto
Life of this patent
Estimating the term…
Abstract
A remote-control assembly for controlling a crane or the like which completely insulates the operator of the remote-control assembly from electric shock. The remote-control assembly includes a remote-control box having a plurality of fluid valves, a converter box including a plurality of pressure switches, and a plurality of fluid lines connecting the fluid valves to the pressure switches. The pressure switches are electrically connected to an electric plug which is adapted to be connected to the electrical control box on the chassis of the crane for operating the crane.
Claims6
A remote-control assembly for controlling a crane or the like having a movable member, wherein said crane includes an electrical control circuit for controlling said movable member, comprising:
- a remote-control box including a plurality of fluid valves and means for operating said fluid valves;
- a converter box including a plurality of pressure switches;
- each of said pressure switches including a diaphragm having at least one electrical contact mounted thereon;
- each of said pressure switches being formed by a separate housing for enclosing said diaphragm and said electrical contact;
- a plurality of fluid lines connecting said fluid valves to operate the diaphragms in each of said pressure switches;
- and
- a plurality of electric lines connecting the electrical contacts of said pressure switches to said electrical control circuit on said crane for operating said movable member.
Dependencies are inferred from the claim text.