U.S. patents available from 1976 to present.
U.S. patent applications available from 2005 to present.

Icon_funbox Bizarre Patents

Patent No. 5377411

Hair Cutting Appliance

A haircutting appliance comprises an enclosed housing having a hollow handle connecting the housing to a vacuum source to carry away cut hairs from a subject's head.

Newsletter  PatentStorm News

Make the Most of Our Site

See this month's Top Inventors and Most Cited Patents.

Stay on top of the latest innovations by subscribing to an RSS feed.

Registered users: Manage your profile.

 

Class 337/158 - Current limiting devices (e.g., high voltage fuses)


Subclass of Class 337 - Electricity: electrothermally or thermally actuated switches
Definition: Subject matter including a fusible device with the ability
No. of patents: 72
Last issue date: 04/22/2008


1    
NumberTitleIssue Date
7362207Electrical switching apparatus and limiter including trip indicator member
A limiter includes a housing having a first surface and a second surface, a line terminal, a load terminal, a fusible conductor electrically connected between the line and load terminals and an indicator button disposed proximate the first surface. The button includ...
04/22/2008
7358845Cable limiter and crab limiter employing replaceable fusible element
A cable limiter includes a main body having a cavity. The cavity of the main body is structured to receive a replaceable fusible element. An annunciator is housed by the main body. The annunciator is structured to annunciate status of the replaceable fusible element...
04/15/2008
7348872Fuse having a plurality of configurable thermal ceilings
A fuse having a plurality of configurable thermal ceilings. The fuse includes a housing, a first conductive cap, a second conductive cap, a plurality of conductive elements extending through the housing, and a conductive connector that is electrically coupled to a c...
03/25/2008
7339486Insertion type fuse with breakage indication
An insertion type fuse with breakage indication comprises a seat having a long receiving chamber for receiving a metal fuse; an rectangular bi-directional SMD form LED set being located on the buckle portions; the LED set being a coating device and being high temper...
03/04/2008
7320171Fuse component
A fuse component (1) includes a hollow body (2) which is formed from a tubular wall that encloses an inner area (5) and which has two open faces that are situated opposite one another. The fuse component also includes a fuse-element (4) w...
01/22/2008
7301431Electroceramic component
An electric component includes a first base body that connects to a first contact, and an ally conducting element positioned along a current path between the first contact and a second contact. The electrically conducting element melts when an operating voltage of t...
11/27/2007
7250843Tubular fuse component with end caps with a hermetically sealing plastic sealing body insert
A fuse component (1) has a fusible conductor (2) which extends in a gas filled cavity (3) within a cylindrical tube (4) between two end surfaces (8). Two end caps (5) of an electrically conductive material are applied to the...
07/31/2007
7222561Pyromechanical cutting element
A pyromechanical cutting element has a housing (2) in which an electrical conductor (3) is arranged, a cutting plunger (5) with a cutting tool (8) to cut through the electrical conductor (3), and pyrotechnic charge (13) to d...
05/29/2007
7109877Fault monitoring apparatus and method
A fault condition monitoring apparatus for use with a fuse cutout includes a housing operable to be supported by the fuse cutout. The housing has first and second contacts operable to make electrical contact with fuse contacts on the fuse cutout when the housing is ...
09/19/2006
7106572Device for protecting against voltage surges
A device for protection against voltage surges in an electric power supply line includes at least two elements (1′, 3), namely a Zener diode lightning arrester (1′) fast-blow in short circuit, and a varistor (3), arranged in parallel. One of...
09/12/2006
6946331Apparatus and method for manufacturing semiconductor device incorporating fuse elements
An apparatus and a method for manufacturing semiconductor devices is disclosed for selectively disconnecting a fuse element out of plural fuse elements formed on a semiconductor wafer substrate which is provided with the plural fuse elements and a dielectric layer h...
09/20/2005
6903649Fuse with fuse link coating
A fuse that includes an arc energy reducing coating to reduce arc energy during a short-circuit and/or a full voltage overload current interrupt is described. The fuse includes end conductor elements, and at least one fuse element secured between and making electric...
06/07/2005
6806806Polymer fuse and filter apparatus
A fuse and filter arrangement having a polymer fuse apparatus that provides bypass fuse protection. A polymer bypass fuse includes of an electrical conductor wherein a portion of the conductor is surrounded by an internal electrode, which is then surrounded by a lay...
10/19/2004
6661633Protective element
The protective element 20A includes a first PTC element 1, as well as a low-melting-point metal member 2, a heat-generating member 3 and a second PTC element. A the PTC material 1' constituting the first PTC element 1 serves as a substrate for the low-mel...
12/09/2003
6657531Fuse circuit using capacitors as fuse elements
A fuse circuit includes electrical fuse elements which are commonly connected at one-side ends, a voltage generating section and a readout section. The voltage generating section is configured to selectively apply program voltage for destroying the electr...
12/02/2003
6507264Integral fuse for use in semiconductor packages
A fuse element partially encapsulated in an arc-suppression material which can, in turn, be integrated along with a semiconductor device into a semiconductor package to provide overcurrent protection, as well as a method of integrating such a fuse along w...
01/14/2003
5939968Electrical apparatus for overcurrent protection of electrical circuits
An electrical apparatus comprising first and second PTC elements composed of a polymer composition with conductive particles dispersed therein, an insulating body, and first and second conductive terminals. Flexible conductive members having a first end t...
08/17/1999
5936506Delay mechanism for retarding relative movement between two members
A delay mechanism for retarding relative movement between two members has particular application in a hinge assembly for a dropout fuseholder. In one embodiment, a pin member rotatably connecting two adjacent members is disposed through a sleeve which has...
08/10/1999
5903208Stitched core fuse
A fuse includes a solid silicone rod that has a fuse element stitched repeatedly through the rod so that the stitches extend longitudinally along the length of the rod. The stitched silicone rod is secured within a fiberglass tube, and a silica sand pulve...
05/11/1999
5880664High-voltage high-breaking-capacity fuse
A quick-break fuse including at least one fuse link formed as a fusible eent, a mechanical actuator operatively connected with the fuse link for disconnecting the same, an energy accumulator for actuating the mechanical actuator, a tripping wire for actu...
03/09/1999
5805046Current responsive latching apparatus for disconnecting and isolating an electrical device
A current responsive latching apparatus may be employed in a dropout fuseholder or other electrical component for retaining the component in a current-carrying position and disconnecting and isolating the electrical component upon the occurrence of an ove...
09/08/1998
5673014General-purpose converter fuse
In known methods heretofore, one could generally distinguish with respect to design and tripping characteristic between the LVHBC fuse (low-voltage high-breaking-capacity fuse), which protects against overload currents, and the semiconductor protection fu...
09/30/1997
5670926High-voltage fuse having a core of bound silica sand about which fusible elements are wound
This high-voltage fuse comprises a tubular housing and a fuse subassembly within the housing with a core in the form of an elongated, cylindrical body primarily of silica sand particles bound together in a rigid, porous mass, a fusible element wound about...
09/23/1997
5604474Full range current limiting fuse to clear high and low fault currents
An improved high voltage, full range, current limiting fuse with enhanced ability to dear high and low fault currents, even after the fuse has been subjected to a potentially damaging current surge, includes a sand-filled tubular housing with conductive t...
02/18/1997
5559488Current limiting fuse having compact structure
The fuseholder includes a current limiting fuse mounted within a fuse body and a lower contact and hinge assembly. The fuse body has contact assemblies mounted on each end thereof. The lower contact assembly on the fuse body is mounted on a hinge which is...
09/24/1996
5457292Load interrupting switch for live front padmounted switchgear
A load interrupter device is provided for live front padmounted high voltage switchgear unit wherein circuit interruption is independent of the speed at which a lineman opens the switch of the switchgear. The interrupter includes an insulating body having...
10/10/1995
5296832Current limiting fuse
A fuse that includes a tubular member made from insulative material, end block portions made from insulative material, a spanner joining together the end block portions, terminals extending through openings in the end block portions, and a fusible element...
03/22/1994
5294905Current limiting fuse
A fuse that includes an insulative housing, terminals extending through gaps in the bottom of the housing, and a fusible element having ends connected to both of the terminals. The housing includes a four-sided box that is closed at the top and open on th...
03/15/1994
5280261Current limiting fuse
An arc quenching, current limiting fuse utilizing a fuse link having a plurally of bends which cause the fuse link to come in contact or come in close proximity to the inside wall of the fuse body. When a short circuit and electrical arc occurs, the fuse ...
01/18/1994
5148140Electrical fuses having improved short-circuit interruptions characteristics
The disclosed electrical fuse has a fuse link in a filling of sand and a binder that imparts high thermal conductivity to the filler. The binder is a shiny coating on the grains of sand extending from grain to grain. It is an amorphous coating. The exempl...
09/15/1992
5109211High voltage fuse
A protective fuse assembly for a current limiting fuse of the type, including a dielectric housing enclosing the fuse, an end cap secured to the lower end of the fuse by a pyrotechnic charge assembly, the end cap supporting the housing on the fuse, an end...
04/28/1992
4972169Spiral wound sand fuse
A spiral wound sand fuse has a non-reactive fiber core permitting use of the fuse to interrupt high fault currents in high voltage circuits....
11/20/1990
4972170High speed fuse
The high speed fuse employs stamped end bell and terminals rather than forged or machined parts. A slot for the terminal is punched through the end bell. The terminal is inserted into the slot in the end bell and staked in position. This insures a strong ...
11/20/1990
4935716Fuse having a ball plug
A high speed fuse 8 having terminals 14 staked to non-electrically conductive end bells 12 with fusible element 30 connected to ridges 44 on terminal 14 by projection welding, and round balls 18 plugging sand holes 20....
06/19/1990
4855705Fuse with a solid arc-quenching body made of non-porous rigid ceramic
A high power current-limiting fuse comprises a cylindrical envelope which closely surrounds a metallic fusible element in the form of a wire or ribbon. The cylindrical envelope is made of high density rigid ceramic such as Alumina of formula Al2
08/08/1989
4841356Fuses and their manufacture
The disclosed fuse has a tube of insulation, terminals at the ends of the tube, a link connecting the terminals, and a granular filler. At least one end cap is made of sheet metal which has one or more integrally extending tabs and a respective hole for e...
06/20/1989
4839625Fuse
A fuse comprising a body (20) encapsulating a fuse element (22), said body (20) including a baseplate (16) formed from a material having good thermal conductivity; a pair of elongate terminals (12) being connected at one end to the baseplate (16) through ...
06/13/1989
4794362Alternating current power circuit and fuse therefor
A fuse for an alternating current power circuit. The fuse comprises an input terminal (4), a first contact (5) electrically connected to the input terminal, an output terminal (9) and a second contact (8) electrically connected to the output terminal. A f...
12/27/1988
4742323Fuse for an alternating current power circuit
A fuse for an alternating current power circuit in the medium voltage (3.3 kV to 38 kV) range. The fuse comprises a sealed chamber and a first electrode (41) is mounted within the chamber, the first electrode having a substantially circular periphery (42)...
05/03/1988
4723117Fuse assembly
A fuse assembly includes a housing having a base, side and end walls and a removable cover. Studs extend through the base and a current limiting fuse is connected between the studs. The cover, which has an edge gasket, is held against the side and end wal...
02/02/1988
1    
 
Sign InRegister
Username  
Password   
forgot password?