Hydraulic-driven electro-lifting device
AssigneeMagnetics International, Inc.
InventorKenneth J. Chlad
Life of this patent
Estimating the term…
Abstract
An improved mobile magnetic lifting assembly for providing magnetic pickup and release in response to hydraulic control. A hydraulic drive motor and electric generator are disposed within a housing which includes an electromagnet attached thereto. The motor drives the generator which is electrically coupled to an electromagnet. The housing includes a suspension brakcet for detachably securing the housing to the boom of a lifting apparatus, as a crane. Hydraulic connections extend through the housing to provide hydraulic motor drive control of the electrical power to the electromagnet.
Claims9
A mobile magnetic lifting assembly comprising:
- a housing;
- an electromagnet retained in said housing and having an exposed magnetic surface for contacting a load to be lifted.
- an electric generator disposed within the housing and coupled to provide electrical power to said magnet;
- a hydraulic drive motor disposed within said housing and coupled to drive the electric generator;
- means coupled through said housing for supplying hydraulic fluid to said hydraulic drive motor;
- and
- suspension means on said housing for enabling removable attachment to a lifting device.
A hydraulically-operated crane device, comprising:
- a maneuverable boom fulcrumed at one end for maneuvering in a selected one of a plurality of directions;
- a magnetic lifting assembly attached at the other end of said boom;
- hydraulic means coupled to said boom and to said magnetic assembly for controlling movement of said boom in a desired direction;
- said magnetic lifting assembly including:
- a housing;
- an electromagnet retained in said housing and having an exposed magnetic surface for contacting a load to be lifted;
- an electric generator disposed within the housing and coupled to provide electrical power to said magnet;
- a hydraulic drive motor disposed within said housing and coupled to drive the electric generator;
- means coupled through said housing for supplying hydraulic fluid from said hydraulic means to said hydraulic drive motor;
- and
- suspension means of said housing for removably attaching said assembly to the boom, said hydraulic means including control means for controlling fluid flow to drive said motor.
A hydraulically-operated crane device, comprising:
- a maneuverable boom fulcrumed at one end for maneuvering in a selected one of a plurality of directions;
- a magnetic lifting assembly attached at the other end of said boom;
- hydraulic means coupled to said boom and to said magnetic assembly for controlling movement of said boom in a desired direction;
- said magnetic lifting assembly including:
- a housing;
- an electromagnet retained in said housing and having an exposed magnetic surface for contacting a load to be lifted;
- an electric generator disposed within the housing and coupled to provide electrical power to said magnet;
- a hydraulic drive motor disposed within said housing and coupled to drive the electric generator;
- means coupled through said housing for supplying hydraulic fluid from said hydraulic means to said hydraulic drive motor;
- suspension means on said housing for removably attaching said assembly to the boom, said hydraulic means including control means for controlling fluid flow to drive said motor, said control means being a valve constructed to provide magnetic control by movement to a plurality of positions including a first portion for providing hydraulic fluid flow to drive said motor in a first direction, a second position for stopping hydraulic fluid flow and motor drive, and a third position for providing hydraulic fluid flow to drive said motor in a second direction opposite to said first direction.
Dependencies are inferred from the claim text.