Protector for electric circuits

Claim 2

A power-supplying electric fuse which has a housing, a terminal adjacent one end of said housing, a terminal adjacent the other end of said housing, a fusible element electrically connecting said terminals, an opening in the first said terminal, an annular mounting on said first said terminal surrounding said opening ans extending inwardly of said first said terminal and extending inwardly of said housing, an enclosed self-contained indicating use which has a casing of insulating material and which has terminals at the opposite ends of said casing and which has one of said terminals telescoped within said annular mounting, the indicator of said indicating fuse normally being held in retracted position within said one terminal of said indicating fuse, said indicating fuse being supportEd in cantilever fashion by said annular mounting and having the other terminal of said indicating fuse being displaced radially outwardly of, and out of engagement with, said fusible element, said indicating fuse having said first said terminal by said annular mounting, said fusible element normally carrying essentially all of the current flowing between said terminals of said power-supplying fuse and thus normally enabling said indicator of said indicating fuse to be held in nonindicating position, said indicating fuse responding to the fusing of said fusible element to cause said indicator thereof to move outwardly to indicating position.

Claim 3

A power-supplying electric fuse which has a housing, a terminal adjacent one end of said housing, a terminal adjacent the other end of said housing, a fusible element electrically connecting said terminals, an opening in the first said terminal, an annular mounting on said first said terminal surrounding said opening and extending inwardly of said first said terminal and extending inwardly of said housing, and enclosed self-contained indicating fuse which has a casing of insulating material and which has terminals at the opposite ends of said casing and which has one of said terminals telescoped within said annular mounting, the indicator of said indicating fuse normally being held in retracted position within said one terminal of said indicating fuse, said indicating fuse being supported in cantilever fashion by said annular mounting and having the other terminal thereof disposed inwardly of said housing said other terminal of said indicating fuse being displaced radially outwardly of, and out of engagement with, said fusible element, said indicating fuse having said indicator thereof held in register with said opening in said first said terminal by said annular mounting, said fusible element normally carrying essentially all of the current flowing between said terminals of said power-supplying fuse and thus normally enabling said indicator of said indicating fuse to be held in nonindicating position, said indicating fuse responding to the fusing of said fusible element to cause said indicator thereof to move outwardly to indicating position, said annular mounting having the axis thereof parallel to, but displaced radially outwardly of, the geometric axis of said housing of said power-supplying electric fuse.

Claim 4

A power-supplying electric fuse which has a housing, a terminal adjacent one end of said housing, a terminal adjacent the other end of said housing, a fusible element electrically connecting said terminals, an opening in the first said terminal, an annular mounting on said first said terminal surrounding said opening and extending inwardly of said first said terminal and extending inwardly of said housing, and enclosed self-contained indicating fuse which has a casing of insulating material and which has terminals at the opposite ends of said casing and which has one of said terminals telescoped within said annular mounting, the indicator of said indicating fuse normally being held in retracted position within said one terminal of said indicating fuse, said indicating fuse being supported in cantilever fashion by said annular mounting and having the other terminal thereof disposed inwardly of said housing said other terminal of said indicating fuse being displaced radially outwardly of, and out of engagement with, said fusible element, said indicating fuse having said indicator thereof held in register with said opening in said first said terminal by said annular mounting, said fusible element normally carrying essentially all of the current flowing between said terminals of said power-supplying fuse and thus normally enabling said indicator of said indicating fuse to be held in nonindicating position, said indicating fuse responding to the fusing of said fusible element to cause said indicator thereof to move outwardly to indicating position, said annular mounting having the axis thereof parallel to, but displaced radially outwardly of, the geometric axis of said housing of said power-supplying electric fuse.

Claim 5

A power-supplying electric fuse which has a housing, a terminal adjacent one end of said housing, a terminal adjacent the other end of said housing, a fusible element electrically connecting said terminals, and opening in the first said terminal, an annular mounting on said first said terminal surrounding said opening and extending inwardly of said first said terminal and extending inwardly of said housing, an enclosed self-contained indicating fuse which has casing of insulating material and which has terminals at the opposite ends of said casing and which has a one of said terminals telescoped within said annular mounting, the indicator of said indicating fuse normally being held in retracted position within said one terminal of said indicating fuse, said indicating fuse being supported in cantilever fashion by said annular mounting and having the other terminal thereof disposed inwardly of said housing, said other terminal of said indicating fuse being displaced radially outwardly of, and out of engagement with, said fusible element, said indicating fuse having said indicator thereof held in register with said opening in said first said terminal by said annular mounting, said fusible element normally carrying essentially all of the current flowing between said terminals of said power-supplying fuse and thus normally enabling said indicator of said indicating fuse to be held in nonindicating position, said indicating fuse responding to the fusing of said fusible element to cause said indicator thereof to move outwardly to indicating position, said annular mounting being adjacent the inner surface of said housing of saId power-supplying electric fuse and thus being eccentric of the geometric axis of said housing of said power-supplying electric fuse, whereby said indicating fuse can be spaced an appreciable distance from the base of a U-shaped clip for said first said terminal of said power-supplying electric fuse.

Claim 6

A power-supplying electric fuse which has a housing, a terminal adjacent one end of said housing, a terminal adjacent the other end of said housing, a fusible element electrically connecting said terminals, and opening in the first said terminal, an annular mounting on said first said terminal surrounding said opening and extending inwardly of said first said terminal and extending inwardly of said housing, an enclosed self-contained indicating fuse which has casing of insulating material and which has terminals at the opposite ends of said casing and which has a one of said terminals telescoped within said annular mounting, the indicator of said indicating fuse normally being held in retracted position within said one terminal of said indicating fuse, said indicating fuse being supported in cantilever fashion by said annular mounting and having the other terminal thereof disposed inwardly of said housing, said other terminal of said indicating fuse being displaced radially outwardly of, and out of engagement with, said fusible element, said indicating fuse having said indicator thereof held in register with said opening in said first said terminal by said annular mounting, said fusible element normally carrying essentially all of the current flowing between said terminals of said power-supplying fuse and thus normally enabling said indicator of said indicating fuse to be held in nonindicating position, said indicating fuse responding to the fusing of said fusible element to cause said indicator thereof to move outwardly to indicating position, said annular mounting being adjacent the inner surface of said housing of saId power-supplying electric fuse and thus being eccentric of the geometric axis of said housing of said power-supplying electric fuse, whereby said indicating fuse can be spaced an appreciable distance from the base of a U-shaped clip for said first said terminal of said power-supplying electric fuse.

Claim 7

A power-supplying electric fuse as claimed in claim 1 wherein solder engages said annular mounting and said one terminal of said indicating fuse to electrically bond said one terminal of said indicating fuse to said first terminal of said power-supplying electric fuse.

Claim 8

A power-supplying fuse which has a housing, a terminal adjacent one end of said housing, a terminal adjacent the other end of said housing, a fusible element electrically connecting said terminals, an opening in the first said terminal, an annular mounting on said first said terminal surrounding and extending inwardly of said first said terminal and extending inwardly of said housing, and enclosed self-contained indicating fuse which has a casing of insulating material and which has terminals at the opposite ends of said casing and which has terminals at the opposite ends of said casing and which has one of said terminals telescoped within said annular mounting, the indicator of said indicating fuse normally being held in retracted position within said one terminal of said indicating fuse, said indicating fuse being supported in cantilever fashion by said annular mounting and having the other terminal thereof disposed inwardly of said housing, said other terminal of said indicating fuse being displaced radially outwardly of, and out of engagement with, said fusible element, said indicating fuse having said indicator thereof held in register with said opening in said first said terminal by said annular mounting, said fusible element normally carrying essentially all of the current flowing between said terminals of said power-supplying fuse and thus normally enabling said indicator of said indicating fuse to be held in nonindicating position, said indicating fuse responding to the fusing of said fusible element to cause said indicator thereof to move outwardly to indicating position, a sleeve of insulation encasing said other terminal of said indicating fuse, and said sleeve of insulation keeping said other terminal of said indicating fuse from engaging any part of said fusible element of said power-supplying electric fuse.

Claim 9

A power-supplying fuse which has a housing, a terminal adjacent one end of said housing, a terminal adjacent the other end of said housing, a fusible element electrically connecting said terminals, an opening in the first said terminal, an annular mounting on said first said terminal surrounding and extending inwardly of said first said terminal and extending inwardly of said housing, and enclosed self-contained indicating fuse which has a casing of insulating material and which has terminals at the opposite ends of said casing and which has terminals at the opposite ends of said casing and which has one of said terminals telescoped within said annular mounting, the indicator of said indicating fuse normally being held in retracted position within said one terminal of said indicating fuse, said indicating fuse being supported in cantilever fashion by said annular mounting and having the other terminal thereof disposed inwardly of said housing, said other terminal of said indicating fuse being displaced radially outwardly of, and out of engagement with, said fusible element, said indicating fuse having said indicator thereof held in register with said opening in said first said terminal by said annular mounting, said fusible element normally carrying essentially all of the current flowing between said terminals of said power-supplying fuse and thus normally enabling said indicator of said indicating fuse to be held in nonindicating position, said indicating fuse responding to the fusing of said fusible element to cause said indicator thereof to move outwardly to indicating position, a sleeve of insulation encasing said other terminal of said indicating fuse, and said sleeve of insulation keeping said other terminal of said indicating fuse from engaging any part of said fusible element of said power-supplying electric fuse.

Claim 10

A power-supplying electric fuse as claimed in claim 1 wherein an elongated support of insulating material is disposed between said terminals of said power-supplying electric fuse, wherein said fusible element of said power-supplying electric fuse, wherein said fusible element of said power-supplying electric fuse is wound onto said elongated support, and wherein mounting brackets at the inner faces of said terminals of said power-supplying electric fuse hold and support the ends of aid elongated support.

Claim 11

A power-supplying electric fuse which has a housing, a terminal adjacent one end of said housing, a terminal adjacent the other end of said housing, a fusible element electrically connecting said terminals, an opening in the first said terminal, an annular mounting on said first said terminal surrounding said opening and extending inwardly of said first said terminal and extending inwardly of said housing, an enclosed self-contained indicating fuse which has a casing of insulating material and which has terminals at the opposite ends of said casing and which has one of said terminals telescoped within said annular mounting, the indicator of said indicating fuse normally being held in retracted position within said one terminal of said indicating fuse, said indicating fuse being supported in cantilever fashion by said annular mounting and having the other terminal thereof disposed inwardly of said housing, said other terminal of said indicating fuse being displaced radially outwardly of, and out of engagement with, said fusible element, said indicating fuse having said indicator thereof held in register with said opening in said first said terminal by said annular mounting, said said fusible element normally carrying essentially all of the current flowing between said terminals of said power-supplying fuse and thus normally enabling said indicator of said indicating fuse responding to the fusing of said fusible element to cause said indicator thereof to move outwardly to indicating position, an elongated support of insulating material disposed between said terminals of said power-supplying electric fuse, said fusible element of said power-supplying electric fuse being wound into said elongated support, and mounting brackets at the inner faces of said terminals of said power-supplying electric which hold and support the ends of said elongated support, the mounting bracket at the inner face of said first said terminal of said power-supplying electric fuse being fixedly spaced from said annular mounting on said first said terminal of said power-supplying electric fuse, whereby said mounting bracket at the inner face of said first said terminal of said power-supplying electric fuse will coact with said annular mounting on said first said terminal of said power-supplying electric fuse to hold said one terminal of said indicating fuse a fixed and predetermined distance from the adjacent end of said elongated support.

Claim 12

A power-supplying electric fuse which has a housing, a terminal adjacent one end of said housing, a terminal adjacent the other end of said housing, a fusible element electrically connecting said terminals, an opening in the first said terminal, an annular mounting on said first said terminal surrounding said opening and extending inwardly of said first said terminal and extending inwardly of said housing, an enclosed self-contained indicating fuse which has a casing of insulating material and which has terminals at the opposite ends of said casing and which has one of said terminals telescoped within said annular mounting, the indicator of said indicating fuse normally being held in retracted position within said one terminal of said indicating fuse, said indicating fuse being supported in cantilever fashion by said annular mounting and having the other terminal thereof disposed inwardly of said housing, said other terminal of said indicating fuse being displaced radially outwardly of, and out of engagement with, said fusible element, said indicating fuse having said indicator thereof held in register with said opening in said first said terminal by said annular mounting, said said fusible element normally carrying essentially all of the current flowing between said terminals of said power-supplying fuse and thus normally enabling said indicator of said indicating fuse responding to the fusing of said fusible element to cause said indicator thereof to move outwardly to indicating position, an elongated support of insulating material disposed between said terminals of said power-supplying electric fuse, said fusible element of said power-supplying electric fuse being wound into said elongated support, and mounting brackets at the inner faces of said terminals of said power-supplying electric which hold and support the ends of said elongated support, the mounting bracket at the inner face of said first said terminal of said power-supplying electric fuse being fixedly spaced from said annular mounting on said first said terminal of said power-supplying electric fuse, whereby said mounting bracket at the inner face of said first said terminal of said power-supplying electric fuse will coact with said annular mounting on said first said terminal of said power-supplying electric fuse to hold said one terminal of said indicating fuse a fixed and predetermined distance from the adjacent end of said elongated support.

Claim 13

A power-supplying electric fuse which has a housing, a terminal adjacent one end of said housing, a terminal adjacent the other end of said housing, a fusible element electrically connecting annular terminal, an opening in the first said disposed an annular mounting on said first said terminal surrounding said opening and extending inwardly of said first said terminal and extending inwardly of said housing, an enclosed self-contained indicating fuse which has a casing of insulating material and which has terminals at the opposite ends of said casing and which has one of said terminals telescoped within said annular mounting, the indicator of said indicating fuse normally being held in retracted position within said one terminal of said indicating fuse, said indicating fuse being supported in cantilever fashion by said annular mounting and having the other terminal thereof disposed inwardly of said housing, said other terminal of said indicating fuse being displaced radially outwardly of, and out of engagement with, said fusible element, said indicating fuse having said indicator thereof held in register with said opening in said first said terminal by said annular mounting, said fusible element normally carrying essentially all of the current flowing between said position, of said power-supplying fuse and thus normally enabling said indicator of said indicating fuse to be held in nonindicating position, said indicating fuse responding to the fusing of said fusible element to cause said indicator thereof to move outwardly to indicating position, a sleeve of insulation encasing said other terminal of said indicating fuse, and insulating washer within said sleeve of insulation spacing a disk from said carries an arc-gap terminal in spaced relation to said other terminal of said indicating fuse, said arc-gap terminal and said other terminal of said indicating fuse being bridged by an arc whenever said fusible element of said power-supplying electric fuse is fused, and said arc causing said indicating fuse to permit said indicator thereof to move outwardly to indicating position.

Claim 14

A power-supplying electric fuse which has a housing, a terminal adjacent one end of said housing, a terminal adjacent the other end of said housing, a fusible element electrically connecting annular terminal, an opening in the first said disposed an annular mounting on said first said terminal surrounding said opening and extending inwardly of said first said terminal and extending inwardly of said housing, an enclosed self-contained indicating fuse which has a casing of insulating material and which has terminals at the opposite ends of said casing and which has one of said terminals telescoped within said annular mounting, the indicator of said indicating fuse normally being held in retracted position within said one terminal of said indicating fuse, said indicating fuse being supported in cantilever fashion by said annular mounting and having the other terminal thereof disposed inwardly of said housing, said other terminal of said indicating fuse being displaced radially outwardly of, and out of engagement with, said fusible element, said indicating fuse having said indicator thereof held in register with said opening in said first said terminal by said annular mounting, said fusible element normally carrying essentially all of the current flowing between said position, of said power-supplying fuse and thus normally enabling said indicator of said indicating fuse to be held in nonindicating position, said indicating fuse responding to the fusing of said fusible element to cause said indicator thereof to move outwardly to indicating position, a sleeve of insulation encasing said other terminal of said indicating fuse, and insulating washer within said sleeve of insulation spacing a disk from said carries an arc-gap terminal in spaced relation to said other terminal of said indicating fuse, said arc-gap terminal and said other terminal of said indicating fuse being bridged by an arc whenever said fusible element of said power-supplying electric fuse is fused, and said arc causing said indicating fuse to permit said indicator thereof to move outwardly to indicating position.

Claim 15

A power-supplying electric fuse which has a housing, a terminal adjacent one end of said housing, a terminal adjacent the other end of said housing, a fusible element electrically connecting said terminals, an elongated support of insulating material disposed between said terminals, said fusible element being wound onto said elongated support, and mounting brackets at the inner faces of said terminals, said mounting brackets holding and supporting the ends of said elongated support and thereby fixing the positions of said ends of said elongated support relative to said terminals, said mounting brackets having support-engaging surfaces with unstressed spacings therebetween which are smaller than the width of said elongated support, whereby said support-engaging surfaces of said brackets must be stressed as said ends of said elongated support are moved into engagement with said mounting brackets, the restorative forces developed within said mounting brackets as said mounting brackets are so stressed thereafter holding said elongated support fixed relative to said mounting brackets and thus fixed relative to said housing.

Claim 16

A power-supplying electric fuse which has a housing, a terminal adjacent one end of said housing, a terminal adjacent the other end of said housing, a fusible element electrically connecting said terminals, an elongated support of insulating material disposed between said terminals, said fusible element being wound onto said elongated support, and mounting brackets at the inner faces of said terminals, said mounting brackets holding and supporting the ends of said elongated support and thereby fixing the positions of said ends of said elongated support relative to said terminals, said mounting brackets having support-engaging surfaces with unstressed spacings therebetween which are smaller than the width of said elongated support, whereby said support-engaging surfaces of said brackets must be stressed as said ends of said elongated support are moved into engagement with said mounting brackets, the restorative forces developed within said mounting brackets as said mounting brackets are so stressed thereafter holding said elongated support fixed relative to said mounting brackets and thus fixed relative to said housing.