US3876966A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Protector for electric circuits
Assignee: Cooper Industries LLC
•
Filing: 1973-08-17
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Granted: 1975-04-08
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Expires: 1993-08-17
Abstract
Abstract An electric fuse can withstand large centrifugal forces because it has a housing with an elongated small cross-section recess therein, has an elongated support of insulating material secured in face-to-face relation with an elongated fusible element throughout the length of that elongated support of insulating material, and has the inner surface of that elongated recess immediately adjacent the elongated side edges of that elongated support of insulating material to effectively prevent bending of that elongated support of insulating material and thereby also effectively prevent bending of that elongated fusible element. The end of the elongated fusible element which will be subjected to the greatest centrifugal forces is bent around the adjacent end of the elongated support of insulating material to firmly hold that adjacent end, and then is soldered to the adjacent terminal of the electric fuse to connect itself and the adjacent end of the elongated support of insulating material to that terminal in an inelastic and unyielding manner.
Inventors
- 👤 Aloysius J Fister
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 19:52
CPC Classifications
H; H01; H01H; H01H85/00; H01H85/02; H01H85/04; H01H85/05; H01H85/18; H01H85/185
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
350 words
A protector for electric circuits which can be mounted on a rotatable member and which comprises a housing of insulating material that has an elongated recess therein and that has the axis of said elongated recess disposable substantially parallel to a radius of said rotatable member, a terminal at one end of said housing of insulating material, a second terminal at the opposite end of said housing of insulating material, an elongated fusible element which is a unitary and homogeneous piece of metal and which is disposed within said elongated recess with its axis substantially parallel to said axis of said elongated recess, an elongated support of insulating material disposed within said elongated recess with its axis substantially parallel to said axis of said elongated recess, means holding said elongated fusible element in face-to-face engagement with said elongated support of insulating material to enable said elongated support insulating material to reinforce and support said elongated fusible element, said elongated support of insulating material being disposed immediately adjacent said axis of said elongated recess, said elongated support of insulating material having the elongated side edges thereof immediately adjacent the inner surface of said elongated recess so said inner surface of said elongated recess can limit bending of said elongated support of insulating material away from said axis of said elongated recess in either direction and can thereby prevent appreciable rotationinduced bending of said elongated support of insulating material, whereby said elongated fusible element is effectively relieved from all rotation-induced bending forces, said elongated support of insulating material having a predetermined length, said elongated fusible element having a length which is substantially the same as said length of said elongated support of insulating material, the width of said elongated support of insulating material being greater than the width of said elongated fusible element, and said elongated support of insulating material having both elongated edges thereof extending laterally outwardly beyond both elongated edges of said elongated fusible element, whereby said elongated edges of said elongated fusible element are spaced inwardly from, and out of engagement with, said inner surface of said elongated recess.
Claim 2
Dependent Claim
350 words
A protector for electric circuits which can be mounted on a rotatable member and which comprises a housing of insulating material that has an elongated recess therein and that has the axis of said elongated recess disposable substantially parallel to a radius of said rotatable member, a terminal at one end of said housing of insulating material, a second terminal at the opposite end of said housing of insulating material, an elongated fusible element which is a unitary and homogeneous piece of metal and which is disposed within said elongated recess with its axis substantially parallel to said axis of said elongated recess, an elongated support of insulating material disposed within said elongated recess with its axis substantially parallel to said axis of said elongated recess, means holding said elongated fusible element in face-to-face engagement with said elongated support of insulating material to enable said elongated support insulating material to reinforce and support said elongated fusible element, said elongated support of insulating material being disposed immediately adjacent said axis of said elongated recess, said elongated support of insulating material having the elongated side edges thereof immediately adjacent the inner surface of said elongated recess so said inner surface of said elongated recess can limit bending of said elongated support of insulating material away from said axis of said elongated recess in either direction and can thereby prevent appreciable rotationinduced bending of said elongated support of insulating material, whereby said elongated fusible element is effectively relieved from all rotation-induced bending forces, said elongated support of insulating material having a predetermined length, said elongated fusible element having a length which is substantially the same as said length of said elongated support of insulating material, the width of said elongated support of insulating material being greater than the width of said elongated fusible element, and said elongated support of insulating material having both elongated edges thereof extending laterally outwardly beyond both elongated edges of said elongated fusible element, whereby said elongated edges of said elongated fusible element are spaced inwardly from, and out of engagement with, said inner surface of said elongated recess.
Claim 3
Dependent Claim
230 words
A protector for electric circuits which can be mounted on a rotatable member and which comprises a housing of insulating material that has an elongated recess therein and that has the axis of said elongated recess disposable substantially parallel to a radius of said rotatable member, a terminal at one end of said housing of insulating material, a second terminal at the opposite end of said housing of insulating material, an elongated fusible element which is a unitary and homogeneous piece of metal and which is disposed within said elongated recess with its axis substantially parallel to said axis of said elongated recess, an elongated support of insulting material disposed within said elongated recess with its axis substantially parallel to said axis of said elongated recess, means holding said elongated fusible element in face-to-face engagement with said elongated support of insulating material to enable said elongated support of insulating material to reinforce and support said elongated fusible element, said elongated support of insulating material being straight throughout the length thereof, and said elongated support of insulating material intimately engaging said elongated fusible element througout the entire length of said elongated support of insulating material, whereby all portions of said elongated fusible element which are in register with any portions of said elongated support of insulating material engage and receive support from said portions of said elongated support of insulating material.
Claim 4
Dependent Claim
230 words
A protector for electric circuits which can be mounted on a rotatable member and which comprises a housing of insulating material that has an elongated recess therein and that has the axis of said elongated recess disposable substantially parallel to a radius of said rotatable member, a terminal at one end of said housing of insulating material, a second terminal at the opposite end of said housing of insulating material, an elongated fusible element which is a unitary and homogeneous piece of metal and which is disposed within said elongated recess with its axis substantially parallel to said axis of said elongated recess, an elongated support of insulting material disposed within said elongated recess with its axis substantially parallel to said axis of said elongated recess, means holding said elongated fusible element in face-to-face engagement with said elongated support of insulating material to enable said elongated support of insulating material to reinforce and support said elongated fusible element, said elongated support of insulating material being straight throughout the length thereof, and said elongated support of insulating material intimately engaging said elongated fusible element througout the entire length of said elongated support of insulating material, whereby all portions of said elongated fusible element which are in register with any portions of said elongated support of insulating material engage and receive support from said portions of said elongated support of insulating material.
Claim 5
Dependent Claim
276 words
A protector for electric circuits which can be mounted on a rotatable member and which comprises a housing of insulating material that has an elongated recess therein and that has the axis of said elongated recess disposable substantially parallel to a radius of said rotatable member, a terminal at one end of said housing of insulating material, a second terminal at the opposite end of said housing of insulating material, an elongated fusible element which is a unitary and homogeneous piece of metal and which is disposed within said elongated recess with its axis substantially parallel to said axis of said elongated recess, an elongated support of insulating material disposed within said elongated recess with its axis substantially parallel to said axis of said elongated recess, means holding said elongated fusible element in face-to-face engagement with said elongated support of insulating material to enable said elongated support of insulating material to reinforce and support said elongated fusible element, one end of said elongated fusible element being immediately adjacent the first said terminal, the other end of said elongated fusible element being immediately adjacent said second terminal, one end of said elongated support of insulating material being immediately adjacent said first said terminal, the other end of said elongated support of insulating material being spaced away from said second terminal, whereby said other end of said elongated fusible element projects beyond said other end of said elongated support of insulating material, and said fusible element having all portions thereof which are in register with any portions of said elongated support of insulating material engaging and receiving support from said portions of said elongated support of insulating material.
Claim 6
Dependent Claim
276 words
A protector for electric circuits which can be mounted on a rotatable member and which comprises a housing of insulating material that has an elongated recess therein and that has the axis of said elongated recess disposable substantially parallel to a radius of said rotatable member, a terminal at one end of said housing of insulating material, a second terminal at the opposite end of said housing of insulating material, an elongated fusible element which is a unitary and homogeneous piece of metal and which is disposed within said elongated recess with its axis substantially parallel to said axis of said elongated recess, an elongated support of insulating material disposed within said elongated recess with its axis substantially parallel to said axis of said elongated recess, means holding said elongated fusible element in face-to-face engagement with said elongated support of insulating material to enable said elongated support of insulating material to reinforce and support said elongated fusible element, one end of said elongated fusible element being immediately adjacent the first said terminal, the other end of said elongated fusible element being immediately adjacent said second terminal, one end of said elongated support of insulating material being immediately adjacent said first said terminal, the other end of said elongated support of insulating material being spaced away from said second terminal, whereby said other end of said elongated fusible element projects beyond said other end of said elongated support of insulating material, and said fusible element having all portions thereof which are in register with any portions of said elongated support of insulating material engaging and receiving support from said portions of said elongated support of insulating material.
Claim 7
Dependent Claim
271 words
A protector for electric ciruits which can be mounted on a rotatable member and which comprises a housing of insulating material that has an elongated recess therein and that has the axis of said elongated recess disposable substantially parallel to a radius of said rotatable member, a terminal at one end of said housing of insulating material, a second terminal at the opposite end of said housing of insulating material, an elongated fusible element which is a unitary and homogeneous piece of metal and which is disposed within said elongated recess with its axis substantially parallel to said axis of said elongated recess, an elongated support of insulating material disposed within said elongated recess with its axis substantially parallel to said axis of said elongated recess, means holding said elongated fusible element in face-to-face engagement with said elongated support of insulating material to enable said elongated support of insulating material to reinforce and support said elongated fusible element, said elongated fusible element having weak spots therein, one of said holding means being interposed between one end of said elongated fusible element and that weak spot which is closest to said one end of said elongated fusible element, whereby that portion of said elongated fusible element which extends beyong said one holding means is free of weak spots, and another of said holding means being interposed between the other end of said elongated fusible element and that weak spot which is closest to the said other end of said elongated fusible element, whereby that portion of said elongated fusible element which extends beyond said other holding means is free of weak spots.
Claim 8
Dependent Claim
271 words
A protector for electric ciruits which can be mounted on a rotatable member and which comprises a housing of insulating material that has an elongated recess therein and that has the axis of said elongated recess disposable substantially parallel to a radius of said rotatable member, a terminal at one end of said housing of insulating material, a second terminal at the opposite end of said housing of insulating material, an elongated fusible element which is a unitary and homogeneous piece of metal and which is disposed within said elongated recess with its axis substantially parallel to said axis of said elongated recess, an elongated support of insulating material disposed within said elongated recess with its axis substantially parallel to said axis of said elongated recess, means holding said elongated fusible element in face-to-face engagement with said elongated support of insulating material to enable said elongated support of insulating material to reinforce and support said elongated fusible element, said elongated fusible element having weak spots therein, one of said holding means being interposed between one end of said elongated fusible element and that weak spot which is closest to said one end of said elongated fusible element, whereby that portion of said elongated fusible element which extends beyong said one holding means is free of weak spots, and another of said holding means being interposed between the other end of said elongated fusible element and that weak spot which is closest to the said other end of said elongated fusible element, whereby that portion of said elongated fusible element which extends beyond said other holding means is free of weak spots.
Claim 9
Dependent Claim
256 words
A protector for electric circuits which can be mounted on a rotatable member and which comprises a housing of insulating material that has an elongated recess therein and that has the axis of said elongated recess disposable substantially parallel to a radius of said rotatable member, a terminal at one end of said housing of insulating material, a second terminal at the opposite end of said housing of insulating material, an elongated fusible element disposed within said elongated recess with its axis substantially parallel to said axis of said elongated recess, an elongated support of insulating material disposed within said elongated recess with its axis substantially parallel to said axis of said elongated recess, means securing said elongated fusible element to said elongated support of insulating material to enable said elongated support of insulating material to reinforce and support said elongated fusible element, said elongated fusible element having one end thereof bent around one end of said elongated support of insulating material and being immediately adjacent the first said terminal, the opposite end of said elongated fusible element extending axially beyond the opposite end of said elongated support of insulating material to be immediately adjacent said second terminal, and bonding material bonding said one end of said fusible element to said first said terminal and bonding said opposite end of said fusible element to said second terminal, said one end of said fusible element and said bonding material providing an inelastic and unyielding connection between said elongated support of insulating material and said first said terminal.
Claim 10
Dependent Claim
256 words
A protector for electric circuits which can be mounted on a rotatable member and which comprises a housing of insulating material that has an elongated recess therein and that has the axis of said elongated recess disposable substantially parallel to a radius of said rotatable member, a terminal at one end of said housing of insulating material, a second terminal at the opposite end of said housing of insulating material, an elongated fusible element disposed within said elongated recess with its axis substantially parallel to said axis of said elongated recess, an elongated support of insulating material disposed within said elongated recess with its axis substantially parallel to said axis of said elongated recess, means securing said elongated fusible element to said elongated support of insulating material to enable said elongated support of insulating material to reinforce and support said elongated fusible element, said elongated fusible element having one end thereof bent around one end of said elongated support of insulating material and being immediately adjacent the first said terminal, the opposite end of said elongated fusible element extending axially beyond the opposite end of said elongated support of insulating material to be immediately adjacent said second terminal, and bonding material bonding said one end of said fusible element to said first said terminal and bonding said opposite end of said fusible element to said second terminal, said one end of said fusible element and said bonding material providing an inelastic and unyielding connection between said elongated support of insulating material and said first said terminal.
Claim 11
Dependent Claim
303 words
A protector for electric circuits which can be mounted on a rotatable member and which comprises a housing of insulating material that has an elongated recess therein and that has the axis of said elongated recess disposable substantially parallel to a radius of said rotatable member, a terminal at one end of said housing of insulating material, a second terminal at the opposite end of said housing of insulating material, an elongated fusible element disposed within said elongated recess with its axis substantially parallel to said axis of said elongated recess, an elongated support of insulating material disposed within said elongated recess with its axis substantially parallel to said axis of said elongated recess, means securing said elongated fusible element to said elongated support of insulating material to enable said elongated support of insulating material to reinforce and support said elongated fusible element, said elongated fusible element having one end thereof bent around one end of said elongated support of insulating material and being immediately adjacent the first said terminal, the opposite end of said elongated fusible element extending axially beyond the opposite end of said elongated support of insulating material to be immediately adjacent said second terminal, bonding material bonding said one end of said fusible element to said first said terminal and bonding said opposite end of said fusible element to said second terminal, said one end of said fusible element and said bonding material providing an inelastic and unyielding connection between said elongated support of insulating material and said first said terminal, a washer which closes that end of said elongated recess which is adjacent said second terminal, and said opposite end of said elongated fusible element extending through a slot in said washer but said opposite end of said elongated support of insulating material stopping short of said washer.
Claim 12
Dependent Claim
303 words
A protector for electric circuits which can be mounted on a rotatable member and which comprises a housing of insulating material that has an elongated recess therein and that has the axis of said elongated recess disposable substantially parallel to a radius of said rotatable member, a terminal at one end of said housing of insulating material, a second terminal at the opposite end of said housing of insulating material, an elongated fusible element disposed within said elongated recess with its axis substantially parallel to said axis of said elongated recess, an elongated support of insulating material disposed within said elongated recess with its axis substantially parallel to said axis of said elongated recess, means securing said elongated fusible element to said elongated support of insulating material to enable said elongated support of insulating material to reinforce and support said elongated fusible element, said elongated fusible element having one end thereof bent around one end of said elongated support of insulating material and being immediately adjacent the first said terminal, the opposite end of said elongated fusible element extending axially beyond the opposite end of said elongated support of insulating material to be immediately adjacent said second terminal, bonding material bonding said one end of said fusible element to said first said terminal and bonding said opposite end of said fusible element to said second terminal, said one end of said fusible element and said bonding material providing an inelastic and unyielding connection between said elongated support of insulating material and said first said terminal, a washer which closes that end of said elongated recess which is adjacent said second terminal, and said opposite end of said elongated fusible element extending through a slot in said washer but said opposite end of said elongated support of insulating material stopping short of said washer.
Claim 13
Dependent Claim
216 words
A protector for electric circuits which can be mounted on a rotatable member and which comprises a housing of insulating material that has an elongated recess therein and that has the axis of said elongated recess disposable substantially parallel to a radius of said rotatable member, a terminal at one end of said housing of insulating material, a second terminal at the opposite end of said housing of insulating material, an elongated fusible element disposed within said elongated recess with its axis substantially parallel to said axis of said elongated recess, an elongated support of insulating material disposed within said elongated recess with its axis substantially parallel to said axis of said elongated recess, means holding said elongated fusible element in face-to-face engagement with said elongated support of insulating material to enable said elongated support of insulating material to reinforce and support said elongated fusible element, said elongated fusible element being straight throughout the entire effective length thereof, said elongated support of insulating material engaging said elongated fusible element throughout the full length of said elongated support of insulating material, whereby all portions of said elongated fusible element which are in register with any portions of said elongated support of insulating material engage and receive support from said portions of said elongated support of insulating material.
Claim 14
Dependent Claim
216 words
A protector for electric circuits which can be mounted on a rotatable member and which comprises a housing of insulating material that has an elongated recess therein and that has the axis of said elongated recess disposable substantially parallel to a radius of said rotatable member, a terminal at one end of said housing of insulating material, a second terminal at the opposite end of said housing of insulating material, an elongated fusible element disposed within said elongated recess with its axis substantially parallel to said axis of said elongated recess, an elongated support of insulating material disposed within said elongated recess with its axis substantially parallel to said axis of said elongated recess, means holding said elongated fusible element in face-to-face engagement with said elongated support of insulating material to enable said elongated support of insulating material to reinforce and support said elongated fusible element, said elongated fusible element being straight throughout the entire effective length thereof, said elongated support of insulating material engaging said elongated fusible element throughout the full length of said elongated support of insulating material, whereby all portions of said elongated fusible element which are in register with any portions of said elongated support of insulating material engage and receive support from said portions of said elongated support of insulating material.
Claim 15
Dependent Claim
197 words
A protector for electric circuits which can be mounted on a rotatable member and which comprises a housing that has an elongated recess therein and that has the axis of said elongated recess disposable parallel to a radius of said rotatable member, a terminal at one end of said housing, a second terminal at the opposite end of said housing, an elongated fusible element disposed within said elongated recess with its axis parallel to said axis of said elongated recess, an elongated support of insulating material disposed within said elongated recess with its axis parallel to said axis of said elongated recess, means securing said elongated fusible element to said elongated support of insulating material to enable said elongated support of insulating material to reinforce and support said elongated fusible element, said elongated support of insulating material being wider than said elongated fusible element, and a washer which is disposed adjacent and which effectively closes one end of said elongated recess, said washer having a slot therein large enough to accommodate one end of said elongated fusible element but small enough to prevent the insertion thereinto of the adjacent end of said elongated support of insulating material.
Claim 16
Dependent Claim
197 words
A protector for electric circuits which can be mounted on a rotatable member and which comprises a housing that has an elongated recess therein and that has the axis of said elongated recess disposable parallel to a radius of said rotatable member, a terminal at one end of said housing, a second terminal at the opposite end of said housing, an elongated fusible element disposed within said elongated recess with its axis parallel to said axis of said elongated recess, an elongated support of insulating material disposed within said elongated recess with its axis parallel to said axis of said elongated recess, means securing said elongated fusible element to said elongated support of insulating material to enable said elongated support of insulating material to reinforce and support said elongated fusible element, said elongated support of insulating material being wider than said elongated fusible element, and a washer which is disposed adjacent and which effectively closes one end of said elongated recess, said washer having a slot therein large enough to accommodate one end of said elongated fusible element but small enough to prevent the insertion thereinto of the adjacent end of said elongated support of insulating material.
Claim 17
Dependent Claim
201 words
A protector for electric circuits which can be mounted on a rotatable member and which comprises a housing of insulating material that has an elongated recess therein and that has the axis of said elongated recess disposable substantially parallel to a radius of said rotatable member, a terminal at one end of said housing of insulating material, a second terminal at the opposite end of said housing of insulating material, an elongated fusible element which is a unitary and homogeneous piece of metal and which is disposed within said elongated recess with its axis substantially parallel to said axis of said elongated recess, an elongated support of insulating material disposed within said elongated recess with its axis substantially parallel to said axis of said elongated recess, means holding said elongated fusible element in face-to-face engagement witht said elongated support of insulating material to enable said elongated support of insulating material to reinforce and support said elongated fusible element, at least one of said terminals having a configuration which coacts with the configuration of a mounting on said rotatable member to hold said one terminal further from the axis of said rotatable member than said other terminal is held from said axis.
Claim 18
Dependent Claim
201 words
A protector for electric circuits which can be mounted on a rotatable member and which comprises a housing of insulating material that has an elongated recess therein and that has the axis of said elongated recess disposable substantially parallel to a radius of said rotatable member, a terminal at one end of said housing of insulating material, a second terminal at the opposite end of said housing of insulating material, an elongated fusible element which is a unitary and homogeneous piece of metal and which is disposed within said elongated recess with its axis substantially parallel to said axis of said elongated recess, an elongated support of insulating material disposed within said elongated recess with its axis substantially parallel to said axis of said elongated recess, means holding said elongated fusible element in face-to-face engagement witht said elongated support of insulating material to enable said elongated support of insulating material to reinforce and support said elongated fusible element, at least one of said terminals having a configuration which coacts with the configuration of a mounting on said rotatable member to hold said one terminal further from the axis of said rotatable member than said other terminal is held from said axis.
Claim 19
Dependent Claim
302 words
A protector for electric circuits which can be mounted on a rotatable member and which comprises a housing of insulating material that has an elongated recess therein and that has the axis of said elongated recess disposable substantially parallel to a radius of said rotatable member, a terminal at one end of said housing of insulating material, a second terminal at the opposite end of said housing of insulating material, an elongated fusible element which is a unitary and homogeneous piece of metal and which is disposed within said elongated recess with its axis substantially parallel to said axis of said elongated recess, an elongated support of insulating material disposed within said elongated recess with its axis substantially parallel to said axis of said elongated recess, means holding said elongated fusible element in face-to-face engagement with said elongated support of insulating material to enable said elongated support of insulating material to reinforce and support said elongated fusible element, said elongated support of insulating material being disposed immediately adjacent said axis of said elongated recess said elongated support of insulating material having the elongated side edges thereof adjacent the inner surface of said elongated recess to said inner surface of said elongated recess can limit bending of said elongated support of insulating material away from said axis of said elongated recess in either direction and can thereby prevent appreciable rotation-induced bending of said elongated support of insulating material, whereby said elongated fusible element is effectively relieved from all rotation-induced bending forces, at least one of said terminals having a configuration which coacts with the configuration of a mounting on said rotatable member to hold said one terminal further from the axis of said rotatable member than said other terminal is held from said axis, and said one terminal being the first said terminal.
Claim 20
Dependent Claim
302 words
A protector for electric circuits which can be mounted on a rotatable member and which comprises a housing of insulating material that has an elongated recess therein and that has the axis of said elongated recess disposable substantially parallel to a radius of said rotatable member, a terminal at one end of said housing of insulating material, a second terminal at the opposite end of said housing of insulating material, an elongated fusible element which is a unitary and homogeneous piece of metal and which is disposed within said elongated recess with its axis substantially parallel to said axis of said elongated recess, an elongated support of insulating material disposed within said elongated recess with its axis substantially parallel to said axis of said elongated recess, means holding said elongated fusible element in face-to-face engagement with said elongated support of insulating material to enable said elongated support of insulating material to reinforce and support said elongated fusible element, said elongated support of insulating material being disposed immediately adjacent said axis of said elongated recess said elongated support of insulating material having the elongated side edges thereof adjacent the inner surface of said elongated recess to said inner surface of said elongated recess can limit bending of said elongated support of insulating material away from said axis of said elongated recess in either direction and can thereby prevent appreciable rotation-induced bending of said elongated support of insulating material, whereby said elongated fusible element is effectively relieved from all rotation-induced bending forces, at least one of said terminals having a configuration which coacts with the configuration of a mounting on said rotatable member to hold said one terminal further from the axis of said rotatable member than said other terminal is held from said axis, and said one terminal being the first said terminal.
Claim 21
Dependent Claim
53 words
A protector for electric circuits as claimed in claim 5 wherein said opposite end of said elongated support of insulating material is immediately adjacent said washer, whereby the portion of said elongated fusible element which is between said washer and said opposite end of said elongated support of insulating material is very short.
Claim 22
Dependent Claim
54 words
A protector for electric circuits as claimed in claim 5 wherein at least one of said terminals has a configuration which coacts with the configuration of a mounting on said rotatable member to hold said one terminal further from the axis of said rotatable member than said other terminal is held from said axis.
Claim 23
Dependent Claim
227 words
A protector for electric circuits which comprises a housing of ceramic material that has an elongated recess therein with the axis of said elongated recess parallel to the axis of said housing, said elongated recess having a diameter which is substantially smaller than the diameter of said housing of ceramic material, an elongated fusible element disposed within said elongated recess with its axis parallel to said axis of said elongated recess, an elongated support of insulating material disposed within said elongated recess with its axis parallel to said axis of said elongatd recess, said elongated support of insulating material being disposed immediately adjacent said axis of said elongated recess, means holding said elongated fusible element in face-to-face engagement with said elongated support of insulating material to enable said elongated support of insulating material to reinforce and support said elongated fusible element, said elongated support of insulating material having a width at least as great as the width of said elongated fusible element, said elongated support of insulating material having the elongated side edges thereof immediately adjacent the inner surface of said elongated recess and acting, at the instant said elongated fusible elements fuses, to retard the movement of vaporized metal and products of combination from that half of said elongated recess in which said elongated fusible element is located to the other half of said elongated recess.
Claim 24
Dependent Claim
227 words
A protector for electric circuits which comprises a housing of ceramic material that has an elongated recess therein with the axis of said elongated recess parallel to the axis of said housing, said elongated recess having a diameter which is substantially smaller than the diameter of said housing of ceramic material, an elongated fusible element disposed within said elongated recess with its axis parallel to said axis of said elongated recess, an elongated support of insulating material disposed within said elongated recess with its axis parallel to said axis of said elongatd recess, said elongated support of insulating material being disposed immediately adjacent said axis of said elongated recess, means holding said elongated fusible element in face-to-face engagement with said elongated support of insulating material to enable said elongated support of insulating material to reinforce and support said elongated fusible element, said elongated support of insulating material having a width at least as great as the width of said elongated fusible element, said elongated support of insulating material having the elongated side edges thereof immediately adjacent the inner surface of said elongated recess and acting, at the instant said elongated fusible elements fuses, to retard the movement of vaporized metal and products of combination from that half of said elongated recess in which said elongated fusible element is located to the other half of said elongated recess.
References Cited (Backward Citations)
US1337949A
Cited
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-04-07 | 1978-10-07 | 1979-04-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-04-07 | 1982-10-07 | 1983-04-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-04-07 | 1986-10-07 | 1987-04-08 | $7700.00 | Window Closed / Lapsed |