Direction turn signal system
First Claim
1. A directional turn signal system comprising a handle post, a permanent magnet attached to said handle post, three reed switches arranged around said handle post for sensing a right turn, a left turn and the neutral positiOn of said handle post, a flip-flop circuit composed of a first pair of NAND circuits to which the impulses from the reed switches for sensing the left turn and the right turn of said handle post are fed as inputs, a second pair of NAND circuits to which the logical product of the outputs of said first pair of NAND circuits and the impulse from the reed switch for sensing the neutral position of the handle post is fed as inputs, a group of the manual right turn, left turn and the neutral switches, a pair of flip-flop circuits each comprised of a pair of NAND circuits respectively and their inputs being impulses from the right and the left turn switches and from the neutral switch as well as from the outputs of the second pair of NAND circuits through condensers, and resistors, diodes for transmitting the outputs of a pair of the NAND circuits from said flip-flop circuits to an oscillator, a third pair of NAND circuits the inputs thereof being the outputs of the other pair of NAND circuits from said flip-flop circuit and the impulse from the oscillator, and a pair of relays connected to the third pair of NAND circuits respectively for flashing right and left hand signal lamps.
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Accused Products
Abstract
A directional turn signal system for automotive vehicles built with IC units so as to reduce the size and assure reliable operation. In this system, the logical product of the outputs of two flip-flop circuits is controlled by two reed switches for sensing the left turn and right turn of the handle post, and the impulse from the reed switch for sensing the neutral position of the handle post is fed to the left and the right flip-flop circuits together with the impulse from one of the manual turn switches whereby one of the outputs of the flip-flop circuits acts to flash the corresponding signal lamps so as to indicate the turn direction. Thus turn signal lamps stay flashing during the automatic return movement of the turn switches.
9 Citations
1 Claim
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1. A directional turn signal system comprising a handle post, a permanent magnet attached to said handle post, three reed switches arranged around said handle post for sensing a right turn, a left turn and the neutral positiOn of said handle post, a flip-flop circuit composed of a first pair of NAND circuits to which the impulses from the reed switches for sensing the left turn and the right turn of said handle post are fed as inputs, a second pair of NAND circuits to which the logical product of the outputs of said first pair of NAND circuits and the impulse from the reed switch for sensing the neutral position of the handle post is fed as inputs, a group of the manual right turn, left turn and the neutral switches, a pair of flip-flop circuits each comprised of a pair of NAND circuits respectively and their inputs being impulses from the right and the left turn switches and from the neutral switch as well as from the outputs of the second pair of NAND circuits through condensers, and resistors, diodes for transmitting the outputs of a pair of the NAND circuits from said flip-flop circuits to an oscillator, a third pair of NAND circuits the inputs thereof being the outputs of the other pair of NAND circuits from said flip-flop circuit and the impulse from the oscillator, and a pair of relays connected to the third pair of NAND circuits respectively for flashing right and left hand signal lamps.
Specification
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- Resources
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Current AssigneeHitoshi Sato
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Original AssigneeHitoshi Sato
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InventorsSato, Hitoshi
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Primary Examiner(s)Waring, Alvin H.
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Application NumberUS05/525,738Time in Patent Office335 DaysField of Search340/55,54,56,331,67,73 200/61.28,61.27US Class Current340/476CPC Class CodesB60Q 1/40 having mechanical, electric...
