Brakes – Operators – Electric
Reexamination Certificate
1999-11-22
2001-09-25
Oberleitner, Robert J. (Department: 3613)
Brakes
Operators
Electric
C188S180000, C187S350000, C187S351000, C187S361000
Reexamination Certificate
active
06293376
ABSTRACT:
BACKGROUND
BACKGROUND OF THE INVENTION
The present invention relates generally to moving apparatus requiring relatively rapid deceleration to a lower velocity upon reaching a predetermined point along its path of movement.
SUMMARY OF THE INVENTION
In accordance with the practice of the present invention, an object, apparatus or vehicle which is moving along a given path is provided with braking means which is automatically actuated to reduce the object velocity on reaching a predetermined point along the path of movement. In a first embodiment, a linear array of spaced apart permanent magnets are arranged along the object path of movement from the predetermined braking point to a further point sufficient to accomplish the desired amount of braking. The object includes a diamagnetic or nonmagnetic member which extends between the spaced apart magnets on the object reaching the predetermined point along the movement path and remains so-positioned throughout the full length of the array. The relative movement between the magnets and the member causes eddy currents to be induced in the member resulting in a braking force being exerted on the member and thus on the object.
In another embodiment, the moving object includes one or more sets of spaced apart permanent magnets affixed thereto. On the object reaching the predetermined braking point of the path of movement, it encounters a diamagnetic or nonmagnetic member that extends between the sets of spaced apart magnets producing the eddy current braking force as in the first embodiment.
In yet another version, actuation means are carried by the object for selectively locating the diamagnetic
onmagnetic member or magnets, as the case may be, in operating relation with the magnets or member arranged along the path of movement on the object reaching the predetermined point of the path.
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Hackler Walter A.
King Bradley
Magnetar Technologies LTD
Oberleitner Robert J.
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