Title: Turn signal indicator

Description: SUMMARY OF THE INVENTION

My invention relates to a control device for a vehicle turn signal, and particularly to a control device for the turn signals for motorcycles. A N.O. momentary contact push button switch is mounted on each side of the motorcycle handlebar. When either switch is closed, it causes a connected layer to latch, activating the flasher unit, and energizing the appropriate turn indicator lamp. The relay is deenergized by the opening of an N.C. mercury switch located in the push-button housing, which opens under the momentum of a turning vehicle. A capacitor is connected in parallel with the mercury switch contacts, serving as an anti-jitter element, by preventing the unit from de-activating as a result of a momentary change in switch position.

BRIEF DESCRIPTION OF THE DRAWING

The objects and features of the invention may be understood with reference to the following detailed description of an illustrative embodiment of the invention, taken together with the accompanying drawings in which:

FIG. 1 is a side elevation view of switch housing on handlebar;

FIG. 2 is a side sectional view of the switch housing; and

FIG. 3 is a schematic drawing of the circuit of one side of the device.

DESCRIPTION OF THE PREFERRED EMBODIMENT

Turning now descriptively to the drawings, in which similar reference characters denote similar elements throughout the several views, FIGS. 1 and 2 illustrate a switch housing 10 fastened by clamps 11 and screws 12 to each handle 13 of the handlebar of a motorcycle. A momentary push-button switch 14, with normally open contacts, and a mercury switch 15 with normally closed contacts are contained in the housing 10. Wire leads 16 from the housing 10 lead to a control box with a circuit as shown in FIG. 3 connected to each set of leads 16.

As shown in FIG. 3, the N.O. contacts of each switch 14 are connected in series between the ground and the coil 20 of a relay 40. One set of N.O. contacts 21 of a relay 40 are in series with the power supply and flasher device 24 and an indicator light 23. The other N.O. contact 22 of the relay 40 acts to latch the relay 40 in the ON mode is series with the N.C. mercury switch 15. A condensor 25 is located in parallel with mercury switch 15 to prevent momentary operation of mercury switch 15 from breaking the circuit to coil 20.

The circuit of FIG. 3 is duplicated for each side of the equipped vehicle, with one circuit connected to through wires 16 to the switch unit 10 on the right handle 13 and to the right side indicator light 23 and the other circuit connected to the switch unit 10 and indicator light 23 on the left side of the vehicle.

Since obvious changes may be made in the specific embodiment of the invention described herein, such modifications being within the spirit and scope of the invention claimed, it is indicated that all matter contained herein is intended as illustrative and not as limiting in scope.
Other info:


Inventors: Williamson, Jr., Lonnie C. (Houston, TX, US)

Application Number: 478211
Filing Date: 1974-06-11
Publication_date: 1976-01-06
Assignee:
Primary Class(es): 307/119 340/476
Other Classes:
US Patent Ref:

2659838

Nov, 1953

DuRocher

315/77.

Other Refs:
Primary Examiner: Hohauser, Herman
Assistant Examiner:
Attorney: Podell; Howard I.