| 摘要 |
A hopper control actuator is provided. The actuator has a frame having a first bracket at a top end for attaching to a hopper, a second bracket at a bottom end for attaching to an overhead support, and at least one strut between the top end and bottom end; a sliding member attached to the frame having of an outer tube, an inner tube and a spring, the inner tube being slidable within the outer tube and having a first magnet affixed on an exterior surface thereof, the spring being connected to the inner tube and the first bracket, the inner tube and the outer tube having complimentary corners to prevent rotation; and an electrical enclosure having a micro-switch mounted therein, the electrical enclosure being attached to the at least one strut and the micro-switch having an actuating lever with a second magnet affixed thereto such that a like pole faces a like pole of the first magnet along a length of a path of travel of the first magnet. |
| 主权项 |
1. A hopper control actuator comprising:
a frame having a first bracket at a top end for attaching to a hopper, a second bracket at a bottom end for attaching to an overhead support, and at least one strut between the top end and bottom end; a sliding member attached to the frame having of an outer tube, an inner tube and a spring, the inner tube being slidable within the outer tube and having a first magnet affixed on an exterior surface thereof, the spring being connected to the inner tube and the first bracket, the inner tube and the outer tube having complimentary corners to prevent rotation; and an electrical enclosure having a micro-switch mounted therein, the electrical enclosure being attached to the at least one strut and the micro-switch having an actuating lever with a second magnet affixed thereto such that a like pole faces a like pole of the first magnet along a length of a path of travel of the first magnet. |
