Double-voltage motor connecting device

Claim 2

In a connecting device for use in making electrical connections in the external circuitry of a three-phase doublevoltage motor having nine external leads connectable for alternative operation of the motor under power supplied by a three-phase low-voltage power supply having three leads, and for operation of the motor under power supplied by a three-phase high-voltage power supply having three leads, the combination comprising a receptacle having nine fixedly positioned terminals, each terminal of said receptacle being adapted to be electrically connected to a specified one of the external leads of the motor, and low-voltage and high-voltage jumper caps each having nine identically positioned terminals, said jumper caps being adapted to be removably and interchangeably mounted on said receptacle in a manner to place each terminal of the respective jumper caps into electrical contact with a specified one of the terminals of said receptacle, three of the terminals of said low-voltage jumper cap each being adapted to be electrically connected to a specified one of the leads of the low-voltage power supply, the remaining terminals of said low-voltage jumper cap being selectively connected in a manner to effect operation of the motor when said low-voltage jumper cap is mounted on said receptacle and connected to the low-voltage power supply, three of the terminals of said high-voltage jumper cap each being adapted to be electrically connected to a specified one of the leads of the high-voltage power supply, the terminals of said high-voltage jumper cap being selectively connected in a manner to effect operation of the motor when said high-voltage cap is mounted on said receptacle and connected to the high-voltage power supply, the terminals of said receptacle and said jumper caps selectively comprising male terminal plugs and female terminal sockets cooperable to effect electrical connection therebetween, said receptacle including a body comprising a casing retaining spaced disc means therein, each male terminal plug having a pin portion which extends outwardly from said body for connection to a terminal of a jumper cap, and a shank portion confined between said spaced disc means, said casing and disc means being separable to permit removal and replacement of said male terminal plugs.

Claim 3

The combination of claim 1 wherein the shank portion of each male terminal plug has an opening adapted to receive one of the external leads of the motor and is adapted to be crimped onto said lead for electrical connection to said lead.

Claim 4

The combination of claim 1 wherein said male terminal plugs of said receptacle have at least one male plug positioned in irregular relation to the remaining of said male terminal plugs, and wherein the female terminal sockets of said jumper caps are positioned for mating cooperation with the male terminal plugs of said receptacle.

Claim 5

In a connecting device for use in making electrical connections in the external circuitry of a three-phase double-voltage motor having nine external leads connectable for alternative operation of the motor unDer power supplied by a three-phase low-voltage power supply having three leads, and for operation of the motor under power supplied by a three-phase high-voltage power supply having three leads, the combination comprising a receptacle having nine fixedly positioned terminals, each terminal of said receptacle being adapted to be electrically connected to a specified one of the external leads of the motor, and low-voltage and high-voltage jumper caps each having nine identically positioned terminals, said jumper caps being adapted to be removably and interchangeably mounted on said receptacle in a manner to place each terminal of the respective jumper caps into electrical contact with a specified one of the terminals of said receptacle, three of the terminals of said low-voltage jumper cap each being adapted to be electrically connected to a specified one of the leads of the low-voltage power supply, the remaining terminals of said low-voltage jumper cap being selectively connected in a manner to effect operation of the motor when said low-voltage jumper cap is mounted on said receptacle and connected to the low-voltage power supply, three of the terminals of said high-voltage jumper cap each being adapted to be electrically connected to a specified one of the leads of the high-voltage power supply, the remaining terminals of said high-voltage jumper cap being selectively connected in a manner to effect operation of the motor when said high-voltage cap is mounted on said receptacle and connected to the high-voltage power supply, the terminals of said receptacle comprising male terminal plugs and the terminals of said jumper caps comprising female terminal sockets, the three terminals of the low-voltage jumper cap which are adapted to be electrically connected to the leads of the low-voltage power supply and the three terminals of the high-voltage jumper cap which are adapted to be electrically connected to the leads of the high-voltage power supply being adapted to be placed into electrical contact with the same terminals of said receptacle when the respective jumper caps are mounted on said receptacle.

Claim 6

In a connecting device for use in making electrical connections in the external circuitry of a three-phase double-voltage motor having nine external leads connectable for alternative operation of the motor unDer power supplied by a three-phase low-voltage power supply having three leads, and for operation of the motor under power supplied by a three-phase high-voltage power supply having three leads, the combination comprising a receptacle having nine fixedly positioned terminals, each terminal of said receptacle being adapted to be electrically connected to a specified one of the external leads of the motor, and low-voltage and high-voltage jumper caps each having nine identically positioned terminals, said jumper caps being adapted to be removably and interchangeably mounted on said receptacle in a manner to place each terminal of the respective jumper caps into electrical contact with a specified one of the terminals of said receptacle, three of the terminals of said low-voltage jumper cap each being adapted to be electrically connected to a specified one of the leads of the low-voltage power supply, the remaining terminals of said low-voltage jumper cap being selectively connected in a manner to effect operation of the motor when said low-voltage jumper cap is mounted on said receptacle and connected to the low-voltage power supply, three of the terminals of said high-voltage jumper cap each being adapted to be electrically connected to a specified one of the leads of the high-voltage power supply, the remaining terminals of said high-voltage jumper cap being selectively connected in a manner to effect operation of the motor when said high-voltage cap is mounted on said receptacle and connected to the high-voltage power supply, the terminals of said receptacle comprising male terminal plugs and the terminals of said jumper caps comprising female terminal sockets, the three terminals of the low-voltage jumper cap which are adapted to be electrically connected to the leads of the low-voltage power supply and the three terminals of the high-voltage jumper cap which are adapted to be electrically connected to the leads of the high-voltage power supply being adapted to be placed into electrical contact with the same terminals of said receptacle when the respective jumper caps are mounted on said receptacle.

Claim 7

The combination of claim 4 wherein, within said low-voltage jumper cap, each of three of the remaining terminals is electrically connected to one of the three terminals which are adapted to be electrically connected to the leads of said low-voltage power supply, and wherein the further remaining three terminals of said low-voltage jumper cap are interconnected with each other.

Claim 8

The combination of claim 4 wherein, within said high-voltage jumper cap, the remaining six terminals are selectively electrically connected in pairs of two.