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Class Information
Number: 337/158
Name: Electricity: electrothermally or thermally actuated switches > Electrothermally actuated switches > Fusible element actuated > Current limiting devices (e.g., high voltage fuses)
Description: Subject matter including a fusible device with the ability to limit a short circuit current to an initial peak magnitude well below the peak magnitude of the current which the protected circuit would be capable of developing under like conditions if a link of negligible resistance and sufficient capacity to survive at least a half cycle of current without melting, were employed in the place of the current limiting fuse device used. The instantaneous value of the current causing the fuse to blow is usually determined by a physical resistor of the desired characteristic or by the use of a particular filler material.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7339486 |
Insertion type fuse with breakage indication |
Mar. 4, 2008 |
| 7320171 |
Fuse component |
Jan. 22, 2008 |
| 7222561 |
Pyromechanical cutting element |
May. 29, 2007 |
| 7109877 |
Fault monitoring apparatus and method |
Sep. 19, 2006 |
| 6806806 |
Polymer fuse and filter apparatus |
Oct. 19, 2004 |
| 6661633 |
Protective element |
Dec. 9, 2003 |
| 6657531 |
Fuse circuit using capacitors as fuse elements |
Dec. 2, 2003 |
| 6507264 |
Integral fuse for use in semiconductor packages |
Jan. 14, 2003 |
| 6300859 |
Circuit protection devices |
Oct. 9, 2001 |
| 5939968 |
Electrical apparatus for overcurrent protection of electrical circuits |
Aug. 17, 1999 |
| 5936506 |
Delay mechanism for retarding relative movement between two members |
Aug. 10, 1999 |
| 5903208 |
Stitched core fuse |
May. 11, 1999 |
| 5880664 |
High-voltage high-breaking-capacity fuse |
Mar. 9, 1999 |
| 5805046 |
Current responsive latching apparatus for disconnecting and isolating an electrical device |
Sep. 8, 1998 |
| 5673014 |
General-purpose converter fuse |
Sep. 30, 1997 |
| 5670926 |
High-voltage fuse having a core of bound silica sand about which fusible elements are wound |
Sep. 23, 1997 |
| 5604474 |
Full range current limiting fuse to clear high and low fault currents |
Feb. 18, 1997 |
| 5559488 |
Current limiting fuse having compact structure |
Sep. 24, 1996 |
| 5457292 |
Load interrupting switch for live front padmounted switchgear |
Oct. 10, 1995 |
| 5296832 |
Current limiting fuse |
Mar. 22, 1994 |
| 5294905 |
Current limiting fuse |
Mar. 15, 1994 |
| 5280261 |
Current limiting fuse |
Jan. 18, 1994 |
| 5148140 |
Electrical fuses having improved short-circuit interruptions characteristics |
Sep. 15, 1992 |
| 5109211 |
High voltage fuse |
Apr. 28, 1992 |
| 4972169 |
Spiral wound sand fuse |
Nov. 20, 1990 |
| 4972170 |
High speed fuse |
Nov. 20, 1990 |
| 4935716 |
Fuse having a ball plug |
Jun. 19, 1990 |
| 4855705 |
Fuse with a solid arc-quenching body made of non-porous rigid ceramic |
Aug. 8, 1989 |
| 4841356 |
Fuses and their manufacture |
Jun. 20, 1989 |
| 4839625 |
Fuse |
Jun. 13, 1989 |
| 4794362 |
Alternating current power circuit and fuse therefor |
Dec. 27, 1988 |
| 4742323 |
Fuse for an alternating current power circuit |
May. 3, 1988 |
| 4723117 |
Fuse assembly |
Feb. 2, 1988 |
| 4713644 |
Vacuum fuse |
Dec. 15, 1987 |
| 4703299 |
High current interrupting fuse with arc quenching means |
Oct. 27, 1987 |
| 4692733 |
Fuse for an alternating current power circuit |
Sep. 8, 1987 |
| 4686502 |
Terminal bracket structure for a current limiting fuse |
Aug. 11, 1987 |
| 4636765 |
Fuse with corrugated filament |
Jan. 13, 1987 |
| 4635022 |
Fuse cut-out cartridge |
Jan. 6, 1987 |
| 4630022 |
Electric fuse for high voltage circuit |
Dec. 16, 1986 |
| 4628294 |
End cap assembly for a fluid resistant electrical device |
Dec. 9, 1986 |
| 4626817 |
Current limiting fuse with less inverse time-current characteristic |
Dec. 2, 1986 |
| 4622533 |
Self-recovery type current limiting element |
Nov. 11, 1986 |
| 4570146 |
High voltage fuse |
Feb. 11, 1986 |
| 4544908 |
Fuse with electro-negative gas interrupting means |
Oct. 1, 1985 |
| 4538133 |
Passively detonated explosively-assisted fuse |
Aug. 27, 1985 |
| 4536735 |
Current limiting high voltage fuse assembly |
Aug. 20, 1985 |
| 4533893 |
Monolithic fuse for rotating equipment |
Aug. 6, 1985 |
| 4528537 |
High current zinc oxide fuse |
Jul. 9, 1985 |
| 4528536 |
High voltage fuse with controlled arc voltage |
Jul. 9, 1985 |
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