Weather resistant control system for school bus safety device
First Claim
1. Apparatus for activating a safety device mounted on a vehicle to cause the device to move to an extended position when a first electrical signal is provided and to return the device to a retracted position when a second electrical signal is provided, said apparatus comprising:
- (a) a motor having rotatable output means selectably energizable by a DC power source and operatively coupled to the safety device through motion translation means for translating the rotary motion of said output means to reciprocating motion for moving said safety device, whereby during one half cycle in the course of a single cycle of rotation of said output means said translation means moves the safety device to said extended position, and during a second half cycle of said single cycle, said translation means returns said safety device to said retracted position;
(b) a rotor having a peripheral surface coupled to said rotatable output means for rotation thereby;
(c) an electrically conductive rotor element mounted on said rotor at a discrete localized point on said peripheral surface and electrically coupled to said power source;
(d) first and second electrically conductive elements located adjacent said peripheral surface of said rotor at diametrically opposed positions, said first and second electrically conductive elements being electrically coupled to said power source and arranged to be selectively electrically engaged by said rotor element;
(e) electrical relay means electrically coupled to said first and second electrically conductive elements and said power source and operative to selectively control the energization of said motor from said power source when said rotor element electrically engages said elements.
1 Assignment
0 Petitions
Accused Products
Abstract
Apparatus for activating a stop sign on a bus from a retracted to an extended position and vice versa. The apparatus includes a motor coupled, via a rotary-to-reciprocating motion translator, to the stop sign. A rotor is connected to the motor and forms a part of the motion translator. The rotor includes an electrically conductive element at a discrete location on its periphery for sequentially engaging respective ones of a pair of elements located at fixed positions on diametric sides of the rotor. The fixed elements are connected via relays to the motor and an electrical power source to control the operation of the motor so that when the bus door is open the stop sign is extended and when the door is closed the sign is retracted.
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Citations
17 Claims
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1. Apparatus for activating a safety device mounted on a vehicle to cause the device to move to an extended position when a first electrical signal is provided and to return the device to a retracted position when a second electrical signal is provided, said apparatus comprising:
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(a) a motor having rotatable output means selectably energizable by a DC power source and operatively coupled to the safety device through motion translation means for translating the rotary motion of said output means to reciprocating motion for moving said safety device, whereby during one half cycle in the course of a single cycle of rotation of said output means said translation means moves the safety device to said extended position, and during a second half cycle of said single cycle, said translation means returns said safety device to said retracted position; (b) a rotor having a peripheral surface coupled to said rotatable output means for rotation thereby; (c) an electrically conductive rotor element mounted on said rotor at a discrete localized point on said peripheral surface and electrically coupled to said power source; (d) first and second electrically conductive elements located adjacent said peripheral surface of said rotor at diametrically opposed positions, said first and second electrically conductive elements being electrically coupled to said power source and arranged to be selectively electrically engaged by said rotor element; (e) electrical relay means electrically coupled to said first and second electrically conductive elements and said power source and operative to selectively control the energization of said motor from said power source when said rotor element electrically engages said elements. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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Specification