Jump start circuit for a vehicle battery

Details Jump start circuit for a vehicle battery Jump start circuit for a vehicle battery

1999-09-23

2001-04-03

Ponomarenko, Nicholas (Department: 2834)

Prime-mover dynamo plants

Electric control

Electric-starting motor with generator

C290S033000, C322S013000, C320S135000

Reexamination Certificate

active

06211577

ABSTRACT:

TECHNICAL FIELD
The present invention relates to a jump start circuit for protecting a battery of a vehicle during jump starting.
BACKGROUND OF THE INVENTION
When a battery of a first motor vehicle is flat (no power), it is known to connect a battery of a second motor vehicle across the flat battery in order to start the engine of the first vehicle. Such a technique is commonly referred to as jump starting. When the battery of a motor vehicle is not located in the engine compartment, but elsewhere in the vehicle, it has become common practice to provide jump start terminals in the engine compartment which can be connected to a battery of a second vehicle should the battery of the first vehicle go flat. If the second battery is incorrectly connected (that is, the wrong polarity) to the jump start terminals, electrical components in the first vehicle (especially diodes associated with the generator of the first vehicle) may be damaged.
SUMMARY OF THE INVENTION
It is an object of the present invention to overcome the above potential problem.
A jump start circuit in accordance with the present invention, for electrical connection between a battery of a motor vehicle and jump start terminals in the motor vehicle, comprises a switch for positioning in an electrical line between one of the jump start terminals and the battery, the switch being biased to a normally open position; and a logic circuit having means for monitoring the polarity of a voltage across the jump start terminals, means for closing the switch on detection of a predetermined polarity, and a timer circuit for opening the switch after closing for a predetermined period of time.
The jump start circuit of the present invention provides protection against incorrect polarity connection during jump starting.


REFERENCES:
patent: H1172 (1993-04-01), Gorniak
patent: 3343057 (1967-09-01), Smith
patent: 4180746 (1979-12-01), Giuffa
patent: 4286172 (1981-08-01), Millonzi et al.
patent: 4489223 (1984-12-01), Puckett et al.
patent: 5083076 (1992-01-01), Scott
patent: 5230637 (1993-07-01), Weber
patent: 5297977 (1994-03-01), Lamper
patent: 5563454 (1996-10-01), Araki et al.
patent: 5936381 (1999-08-01), Suh
patent: 6002235 (1999-12-01), Clore
patent: 8 87 895 (1953-07-01), None
patent: 92 11 998 U1 (1993-01-01), None

Affiliated with

Also associated with

Rating

Jump start circuit for a vehicle battery does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Jump start circuit for a vehicle battery, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Jump start circuit for a vehicle battery will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2471990