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| Number | Title | Issue Date |
| 4868981 | Method of making loop-feed wiring arrangement for electric circuit breakers and switches Double-lug wiring assemblies are added to multipole eletric circuit breaker load centers to allow for loop-feed connection between the load centers when employed within satellite power take-off facilities. The loop-feed arrangement results in a substantia... | 09/26/1989 |
| 4870531 | Circuit breaker with removable display and keypad An electronic circuit interrupter digital display and keypad device includes a display to view circuit breaker settings and a keypad to select settings and values to be displayed. The display and keypad device removably connects to an electronic trip unit... | 09/26/1989 |
| 4864263 | Molded case circuit breaker latch and operating mechanism assembly An industrial rated molded case circuit breaker having an electronic trip circuit contained within the circuit breaker enclosure includes a reset spring in cooperation with the circuit breaker latch spring to insure manual reset of circuit breaker after a... | 09/05/1989 |
| 4860157 | Molded case circuit breaker actuator-accessory module An integrated protection unit is a circuit breaker which includes basic overcurrent protection facility along with selective electrical accessories. A molded plastic accessory access cover secured to the integrated protection unit cover protects the acces... | 08/22/1989 |
| 4860162 | Molded case and cover arrangement for current limiting circuit interrupters An insulating plastic case and cover for a circuit breaker having complementary extensions on the cover and recesses on the base side walls to transfer internal stress from the base side walls to the cover during circuit interruption.... | 08/22/1989 |
| 4858056 | Molded case circuit breaker actuator-accessory module An integrated protection unit is a circuit breaker which includes basic overcurrent protection facility along with selective electrical accessories. A molded plastic accessory access cover secured to the integrated protection unit cover protects the acces... | 08/15/1989 |
| 4851963 | Weatherproof air conditioning disconnect switch A weather-tight air conditioning disconnect switch has both plastic and metal enclosure components for low cost assembly. The exterior components include a metal case and cover whereas the interior non-electrical components are plastic-molded. One such mo... | 07/25/1989 |
| 4849581 | Adjustable joint for electrical busway The outer surfaces of adjoining electrical busway side frames are shaped to define a protruding rail extending along the vertical axis thereof. A pair of recessed channels formed within the inner surfaces of the side frames of an intervening busway joint ... | 07/18/1989 |
| 4842533 | Thermally efficient splice joint for electrical distribution busway A thermally efficient joint for electrical power distribution busway electrically connects between adjacent busway sections. Each busway joint includes a modular assembly containing spaced metallic splice plates separated by corresponding insulating plate... | 06/27/1989 |
| 4843359 | Molded case circuit breaker handle for automated assembly A circuit breaker operating handle formed from a plastic composition includes a handle access post and a curvilinear handle skirt. A pair of opposedly positioned detent members are integrally-formed on the surface of the handle skirt opposite the handle a... | 06/27/1989 |
| 4835842 | Method of assembling a molded case circuit breaker operating mechanism A circuit breaker operating mechanism for automated assembly finds application within circuit breakers of different ampere ratings. The circuit breaker contacts are opened and closed by means of a roller connected to the circuit breaker operating handle t... | 06/06/1989 |
| 4833563 | Molded case circuit breaker actuator-accessory module An integrated protection unit is a circuit breaker which includes basic overcurrent protection facility along with selective electrical accessories. A molded plastic accessory access cover secured to the integrated protection unti cover protects the acces... | 05/23/1989 |
| 4831221 | Molded case circuit breaker auxiliary switch unit An integrated protection unit is a circuit breaker which includes basic overcurrent protection facility along with selective electrical accessories. A molded plastic accessory access cover secured to the integrated protection unit cover protects the acces... | 05/16/1989 |
| 4827089 | Molded case circuit breaker interlock arrangement Molded case circuit breakers connected to two different sources of power within an industrial application are interlocked to prevent one circuit breaker from being turned on while the other circuit breaker is already on. The circuit breakers include a mol... | 05/02/1989 |
| 4820178 | Outlet box for electric busway system Molded plastic outlet boxes are attached to an electric busway power distribution system at each location along the system where the bus bar conductors are provided with plug-in stabs. Slotted openings arranged through a top of the outlet box are centered... | 04/11/1989 |
| 4814712 | Test kit for a circuit breaker containing an electronic trip unit A test kit for a digital and analog electronic circuit breaker determines the calibration and overcurrent response of the circuit breaker when connected within an electric power circuit. The test kit simulates an overcurrent condition and provides verific... | 03/21/1989 |
| 4809132 | Field installable line and load lug connectors for molded case circuit breakers Line and load lugs are fixedly attached to each pole of a multi-pole molded case circuit breaker without requiring screws. The lugs are positioned within the line and load lug compartments at opposing ends of the breaker by grooves formed along the sides ... | 02/28/1989 |
| 4806893 | Molded case circuit breaker actuator-accessory unit An integrated protection unit is a circuit breaker which includes basic overcurrent protection facility along with selective electrical accessories. A molded plastic accessory access cover secured to the integrated protection unit cover protects the acces... | 02/21/1989 |
| 4804804 | Thermally efficient power busway housing A two-piece extruded aluminum alloy housing is shaped to provide support and ground conduction facility to power busway conductors contained therein. The two-piece housing is attached together with snap-fit connectors along its top and bottom surfaces. Th... | 02/14/1989 |
| 4803774 | Method of making molded case circuit breaker contact arrangement A molded case circuit breaker movable contact arm or carrier electrically connects with the circuit breaker trip unit or load terminal without requiring a flexible electrical conducting braid. The contact carrier is pivotally arranged within a contact car... | 02/14/1989 |
| 4801907 | Undervoltage release accessory for a circuit breaker interior An undervoltage release accessory is attached to the interior of a circuit breaker enclosure proximate the operating handle assembly. A reset mechanism positioned between the handle operator and the undervoltage release plunger resets the undervoltage rel... | 01/31/1989 |
| 4801906 | Molded case circuit breaker trip indicator unit An integrated protection unit is a circuit breaker which includes basic overcurrent protection facility along with selective electrical accessories. A molded plastic accessory access cover secured to the integrated protection unit cover protects the acces... | 01/31/1989 |
| 4794211 | Fused disconnect switch with non-metallic enclosure A fused disconnect switch is contained within a molded plastic cover pivotally attached to a molded plastic case. The switch contact blade is directly attached to the cover whereby movement of the cover in one direction slidingly connects the switch conta... | 12/27/1988 |
| 4794356 | Molded case circuit breaker auxiliary switch unit An integrated protection unit is a circuit breaker which includes basic overcurrent protection facility along with selective electrical accessories. A molded plastic accessory access cover secured to the integrated protection unit cover protects the acces... | 12/27/1988 |
| 4789848 | Molded case circuit breaker latch and operating mechanism assembly An industrial rated molded case circuit breaker having an electronic trip circuit contained within the circuit breaker enclosure includes a reset spring in cooperation with the circuit breaker latch spring to insure manual reset of circuit breaker after a... | 12/06/1988 |
| 4788621 | Molded case circuit breaker multiple accessory unit An integrated protection unit is a circuit breaker which includes basic overcurrent protection facility along with selective electrical accessories. A molded plastic accessory access cover secured to the integrated protection unit cover protects the acces... | 11/29/1988 |
| 4788620 | Static trip circuit breaker with automatic circuit trimming Electronic trip units employed within static trip circuit breakers are individually calibrated and automatically adjusted to ensure that the trip transfer characteristics are within specification requirements. A trimming network within the trip unit circu... | 11/29/1988 |
| 4786885 | Molded case circuit breaker shunt trip unit An integrated protection unit is a circuit breaker which includes basic overcurrent protection facility along with selective electrical accessories. A molded plastic accessory access cover secured to the integrated protection unit cover protects the acces... | 11/22/1988 |
| 4785378 | Loop-feed wiring arrangement for electric circuit breakers and switches Double-lug wiring assemblies are added to multipole electric circuit breaker load centers to allow for loop-feed connection between the load centers when employed within satellite power take-off facilities. The loop-feed arrangement results in a substanti... | 11/15/1988 |
| 4785145 | Modular electrical disconnect switch A modular electrical disconnect switch employs multi-functional component designs for minimum inventory of operating components. The switch replaces a number of switches of different ratings and sizes thereby reducing the total switch inventory requiremen... | 11/15/1988 |
| 4782583 | Method of assembling a molded case circuit breaker crossbar A molded case circuit breaker crossbar assembly allows the movable contact carrier, contact spring and contact carrier operating cam to be preassembled prior to insertion within the circuit breaker case. The crossbar is fabricated from a plastic molding c... | 11/08/1988 |
| 4783718 | Lighting circuit breaker panelboard modular assembly A circuit breaker panelboard modular assembly employs a plurality of interdependent molded plastic and metal parts to multifunctionally adapt breakers of different ratings for electrical connection within the panelboard enclosure. Anti-turn connector conn... | 11/08/1988 |
| 4778961 | Compact electric safety switch A compact electric safety switch including a rotatably mounted double contact blade assembly. Heavy duty compression springs are positioned under the blade assembly for rapid make and break connection between opposing line and load contact stabs. A pair o... | 10/18/1988 |
| 4778959 | Fused disconnect switch A fused disconnect switch within a metal enclosure provides rapid connection line and load stabs with a minimum degree of arcing. The operating handle is arranged within the switch enclosure and is accessed by means of an operating handle extension. The o... | 10/18/1988 |
| 4771258 | Molded case circuit breaker bimetal with high calibration yield A molded case circuit breaker bimetal trip unit arrangement substantially reduces the variation in trip characteristics between circuit breakers employing the improved bimetal. The number of circuit breakers failing the in-line calibration test is corresp... | 09/13/1988 |
| 4770724 | Continuous metal casting method and apparatus and products The products of this invention are produced in an elongated casting vessel disposed in upright position to receive liquid metal for solidification within an electromagnetic field generating means disposed around the vessel along a portion of its length. T... | 09/13/1988 |
| 4771254 | Circuit breaker magnetic trip unit A magnetic trip unit for molded case circuit breakers includes a pair of U-shaped magnets opposedly arranged around a part of the circuit breaker load strap and the armature strap. Circuit current in excess of a threshold value displaces the armature stra... | 09/13/1988 |
| 4758172 | Power distribution busway system An electric power busway system includes a plurality of closely spaced bus bar conductors with each bus conductor having at least one integrally formed contact blade extending therefrom. The contact blades engage corresponding contact spring type receiver... | 07/19/1988 |
| 4757294 | Combined trip unit and accessory module for electronic trip circuit breakers A combined trip actuator and accessory module for molded case circuit breakers is accessible in the field for user selected accessory options. The trip actuator includes a U-shaped stator with a permanent magnet at the end of one leg. A spring-loaded arma... | 07/12/1988 |
| 4755909 | Fused disconnect switch with non-metallic enclosure A fused disconnect switch is contained within a molded plastic cover pivotally attached to a molded plastic case. The switch contact blade is directly attached to the cover whereby movement of the cover in one direction slidingly connects the switch conta... | 07/05/1988 |
