Railroad warning device
First Claim
1. A RAIL DETECTOR PHYSICALLY CONNECTED TO A RAIL FOR DETECTING MOVEMENT OF A TRAIN OR OTHER RAIL VEHICLE ALONG THE TRACK BY DETECTING VERTICAL MOTION OF THE RAIL AT THE POINT OF CONNECTION OF THE DETECTOR, SAID DETECTOR INCLUDING A NORMALLY-CLOSED ELECTRICAL CIRCUIT HAVING A FIXED AND A MOVABLE CONTACT FOR OPENING MOMENTARILY AND THEN CLOSING SAID ELECTRICAL CIRCUIT DURING MOVEMENT OF THE RAIL DOWNWARD FROM ITS NORMAL POSITION AND FOR OPENING MOMENTARILY AND THEN CLOSING SAID ELECTRICAL CIRCUIT DURING RETURN MOVEMENT OF THE RAIL UPWARD TO ITS NORMAL POSITION, SAID FIXED CONTACT HAVING A HORIZONTAL UPPER STOP PORTION, A VERTICAL LOWER PORTION SPACED THEREBELOW, AND IN THE INTERMEDIATE REGION AND OFFSET PORTION ELECTRICALLY CONNECTING SAID UPPER AND LOWER PORTIONS AND OFFSET LATERALLY FROM SAID VERTICALL LOWER PORTION, SAID MOVABLE CONTACT BEING MOVABLE VERTICALLY BETWEEN SAID UPPER HORIZONTAL STOP PORTION AND SAID VERTICAL LOWER PORTION WITHOUT ENGAGING SAID INTERMEDIATE PORTION, SAID DETECTOR INCLUDING SPRING MEANS NORMALLY HOLDING SAID MOVABLE CONTACT IN CONTACT WITH SAID HORIZONTAL UPPER STOP PORTION WHEN SAID RAIL IS IN ITS NORMAL UNDERPRESSED POSITON, SAID MOVABLE CONTACT BEING PHYSICALLY COUPLED TO SAID RAIL AND MOVABLE DOWNWARD AND UPWARD THROUGH SAID INTERMEDIATE REGION AND INTO AND OUT OF CONTACT WITH THE VERTICAL LOWER PORTION AS THE RAIL IS MOVED DOWNWARD AND UPWARD.
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Accused Products
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Citations
1 Claim
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1. A RAIL DETECTOR PHYSICALLY CONNECTED TO A RAIL FOR DETECTING MOVEMENT OF A TRAIN OR OTHER RAIL VEHICLE ALONG THE TRACK BY DETECTING VERTICAL MOTION OF THE RAIL AT THE POINT OF CONNECTION OF THE DETECTOR, SAID DETECTOR INCLUDING A NORMALLY-CLOSED ELECTRICAL CIRCUIT HAVING A FIXED AND A MOVABLE CONTACT FOR OPENING MOMENTARILY AND THEN CLOSING SAID ELECTRICAL CIRCUIT DURING MOVEMENT OF THE RAIL DOWNWARD FROM ITS NORMAL POSITION AND FOR OPENING MOMENTARILY AND THEN CLOSING SAID ELECTRICAL CIRCUIT DURING RETURN MOVEMENT OF THE RAIL UPWARD TO ITS NORMAL POSITION, SAID FIXED CONTACT HAVING A HORIZONTAL UPPER STOP PORTION, A VERTICAL LOWER PORTION SPACED THEREBELOW, AND IN THE INTERMEDIATE REGION AND OFFSET PORTION ELECTRICALLY CONNECTING SAID UPPER AND LOWER PORTIONS AND OFFSET LATERALLY FROM SAID VERTICALL LOWER PORTION, SAID MOVABLE CONTACT BEING MOVABLE VERTICALLY BETWEEN SAID UPPER HORIZONTAL STOP PORTION AND SAID VERTICAL LOWER PORTION WITHOUT ENGAGING SAID INTERMEDIATE PORTION, SAID DETECTOR INCLUDING SPRING MEANS NORMALLY HOLDING SAID MOVABLE CONTACT IN CONTACT WITH SAID HORIZONTAL UPPER STOP PORTION WHEN SAID RAIL IS IN ITS NORMAL UNDERPRESSED POSITON, SAID MOVABLE CONTACT BEING PHYSICALLY COUPLED TO SAID RAIL AND MOVABLE DOWNWARD AND UPWARD THROUGH SAID INTERMEDIATE REGION AND INTO AND OUT OF CONTACT WITH THE VERTICAL LOWER PORTION AS THE RAIL IS MOVED DOWNWARD AND UPWARD.
Specification
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- Resources
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Current AssigneeClarence J. Reigh
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Original AssigneeClarence J. Reigh
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InventorsReigh, Clarence J.
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Application NumberUS04/343,184Time in Patent Office358 DaysField of SearchUS Class Current246/124CPC Class CodesB61L 1/06 actuated by deformation of ...B61L 23/06 for warning men working on ...
