Deceleration magnitude detecting and signaling device

• US 5,717,377 A
• Filed: 10/15/1996
• Issued: 02/10/1998
• Est. Priority Date: 03/13/1996
• Status: Expired due to Fees

• Current Assignee: Feng Gao
• Original Assignee: Feng Gao
• Inventors: Gao, Feng
• Primary Examiner(s): Mullen, Thomas
• Assistant Examiner(s): GOINS, DAVETTA WOODS
• Application Number:
  US08/730,199
• Time in Patent Office: 483 Days
• Field of Search: 340/467, 340/468, 340/435, 340/436, 340/901, 340/902, 340/903, 340/904, 340/906, 340/936, 340/942, 340/479
• US Class Current: 340/467
• CPC Class Codes: B60Q 1/447 with indication of the braking strength or speed changes, e.g. by changing the shape or intensity of the indication

Abstract

A deceleration magnitude detecting and signaling device for alerting a driver of a following vehicle of the occurrence and magnitude of deceleration of a lead vehicle. A deceleration sensor unit, in circuit between a series of lamp assemblies and a power supply, causes said lamp assemblies to incrementally illuminate in response to increases in deceleration. A signaling unit, affixed to the rear of the lead vehicle, comprises a plurality of light panels which are illuminated by the lamp assemblies in response to increases in deceleration. An infra-red receiver mounted in the following vehicle is capable, upon receiving a signal from an infra-red transmitter mounted upon the lead vehicle, of signaling an engine management override system which is mounted in the following vehicle to automatically decelerate said following vehicle in response to sudden deceleration of the lead vehicle.

Claims

1. A deceleration magnitude detecting and signaling device for alerting a driver of a following vehicle of the occurrence and magnitude of deceleration of a lead vehicle, comprising:

a) a sensor unit mounted operatively in the lead vehicle, said sensor unit comprising a power source, a cell having opposite ends and a spring affixed to one of said ends, a conductive slide weight contained within said cell and biased against the spring such that said conductive slide weight may move freely within the cell, restrained only by the resistance of the spring, a lead electrode in circuit with the power supply penetrating the cell and extending transverse through the length of said cell and always in electrical contact with the conductive slide weight, a plurality of switch electrodes penetrating the length of the cell, and lamp assemblies which are in circuit with each of said switch electrodes, said lamp assemblies connected in parallel circuit and diodes are situated between said lamp assemblies, said diodes allowing only the unidirectional flow of current from a particular lamp assembly towards the lamp assembly in circuit with the switch electrode previously contacted by the conductive slide weight, such that as the conductive slide weight is forced against the biasing spring by deceleration and contacts progressive switch electrodes, a circuit will be completed and current permitted to flow to those lamp assemblies in circuit with switch assemblies currently and previously contacted, but no current permitted to flow to those lamp assemblies that have not yet been contacted by the conductive slide weight, thus causing incrementally greater numbers of lamp assemblies to receive current as deceleration increases; and

b) a signaling unit, mounted at the rear of the lead vehicle, for visually alerting the driver of the following vehicle as to the magnitude of deceleration of the lead vehicle, as detected by the sensor unit.

2. The deceleration magnitude signaling device of claim 1, further comprising:

a) an infra-red transmitter, mounted in the lead vehicle in wired communication with the lamp assemblies, said infra-red transmitter configured to transmit a signal corresponding in intensity to the number of lamp assemblies receiving current from the sensor unit, hence said signal will correspond in intensity to the magnitude of deceleration of the lead vehicle; and

b) an infra-red receiver, mounted in the following vehicle, for receiving the signal transmitted by the infra-red transmitter.

3. The deceleration magnitude signaling device of claim 2, wherein the infra-red receiver mounted in the following vehicle is in communication with an engine management override system, said engine management override system capable of automatically decelerating the following vehicle in response to sudden deceleration of the lead vehicle.

4. The deceleration magnitude signaling device of claim 3, wherein the infra-red receiver mounted in the following vehicle is in communication with a speaker which is also mounted within said following vehicle, said speaker capable of providing an audible alert to a driver of the following vehicle, in response to sudden deceleration of the lead vehicle.