초록 ▼

A jumper cable comprised of first and second electrical cable means which each have a pair of electrical connector clamps on one end thereof. An electrical coupling is positioned on the other end of the two electrical cable means with the connectors adapted to be secured to each other at approximate

A jumper cable comprised of first and second electrical cable means which each have a pair of electrical connector clamps on one end thereof. An electrical coupling is positioned on the other end of the two electrical cable means with the connectors adapted to be secured to each other at approximately the midpoint between the clamps. A polarity indicator circuit is located within each connector and is comprised of diodes and separate and differently colored lights to visually verify that the appropriate clamps have been secured to the battery being charged. An alternate form of the invention utilizes an audible sound means within the connectors to provide a sound signal if the clamps are not properly secured to the battery terminals.

대표청구항 ▼

A jumper cable device, comprising, a first electrical cable means having opposite ends, a pair of electrical connector clamps on one end of said first electrical cable means, an electrical coupling on the other end of said first electrical cable means, a second electrical means having opposite ends,

A jumper cable device, comprising, a first electrical cable means having opposite ends, a pair of electrical connector clamps on one end of said first electrical cable means, an electrical coupling on the other end of said first electrical cable means, a second electrical means having opposite ends, a pair of electrical connector clamps on one end of said second electrical cable means, an electrical coupling on the other end of said electrical cable means, each cable means being comprised of positive and negative cable elements, electrical circuit means electrically connecting said cable elements within said couplings, polarity signal means imposed in said circuit means, a diode in said circuit means permitting flow of current in only one direction through said polarity signal means from one of said cable elements whereby the flow of current through said polarity signal means is indicative of the polarity of the clamps and cable elements associated therewith, said electrical couplings adapted to be secured directly together to effect electrical connection between said first and second electrical cable means, said electrical couplings having positive and negative terminals electrically connected to the positive and negative cable elements, respectively, of each cable means, and means on said couplings permitting the interconnection of said positive terminals together and permitting the interconnection of said negative terminals together, and preventing the interconnection of said positive and negative terminals.