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| Number | Title | Issue Date |
| 5821695 | Encapsulated explosion-proof pilot light A housing having a cavity is in sealing engagement with a glass jewel which also contains a cavity; these two cavities cooperate to form a closed chamber. A frame supporting terminal plates is mounted within the chamber. The frame also mounts a circuit bo... | 10/13/1998 |
| 5717182 | High amperage disconnect switch A pair of fixed contacts is associated with a pair of movable contacts. All of the contacts have circular contact faces. A U-shaped stainless steel arc shield is provided adjacent each set of movable and fixed contacts. The semi-circular bight portion of ... | 02/10/1998 |
| 5686708 | Protective fuse shield for disconnect switches A fuse shield plate is pivotally mounted over the fuses which are electrically associated with a disconnect switch. The switch operating lever is connected to an interlock rod which extends to a dead front receptacle. Interfitting elements on the fuse shi... | 11/11/1997 |
| 5678866 | Corrosion resistant hub with elastomeric seal A corrosion resistant hub with a metal insert and an elastomeric outer shell forms a coupling to join a conduit to an enclosure. The metal insert which serves as a grounding mechanism for the conduit comprises internal threads, located near the conduit re... | 10/21/1997 |
| 5661265 | Drain for electrical enclosure An explosion proof drain for incorporation into an enclosed electrical system including a hollow housing with an opening at an upper end and an annular flange circumscribing a smaller opening at a lower end. A porous, metallic disk is force fitted into a ... | 08/26/1997 |
| 5569042 | Light fixture with safety sockets A light fixture for a double-ended lamp includes a first insulator containing a first electrical socket and a well in communication therewith and having a greater depth than the first socket. A second insulator has a second electrical socket and a slot in... | 10/29/1996 |
| 5358429 | Hazardous location-rated plug An electrical plug for an associated electrical device for use in hazardous locations, comprising a metal housing; a nonconductive plug base holding at least two conductive terminal prongs connected to conductor wires passing through the housing and conne... | 10/25/1994 |
| 5300863 | Auxiliary lighting circuit for a gaseous discharge lamp A non-arcing electrical switch is disclosed wherein a solid-state switching element is operated in response to current flow within an external circuit. The switch is particularly suitable for use within an auxiliary lighting circuit of a gaseous discharge... | 04/05/1994 |
| 5286935 | Self-locating, prepositioning actuator for an electrical switch enclosure An actuator means for an electrical switch concealed in a housing and operated by a handle externally mounted to the cover thereof, whereby, upon closing the cover, the actuator automatically moves in a rectilinear direction to locate the toggle operating... | 02/15/1994 |
| 5212624 | Interlock mechanism for explosion-proof fixture having circuit breaker switch An interlock mechanism operably associated with the plug receptacle of an explosion-proof housing whereby a plug may be inserted into or removed from the receptacle only when electrical current is not delivered to the receptacle. The interlock mechanism c... | 05/18/1993 |
| 5068494 | Conduit connector for eccentrically dimensioned conduit A connector for connecting a flexible, eccentrically dimensioned conduit to an electrical fixture comprising a connector cap and body portions. The connector cap has a threaded metal collar portion and a plastic floating sleeve with an extending wedging r... | 11/26/1991 |
| 4842548 | Plastic conduit connector for flexible conduit A two-piece, all plastic connector for connecting a flexible conduit to an electrical fixture comprising a threaded connector cap having an extending wedging ring and a mating threaded connector body having a deflection ramp. The connector body is secured... | 06/27/1989 |
| 4738636 | Strain relief connectors for flexible cord and cable A four-piece all plastic strain relief connector for connecting an electrical cord to an electrical fixture comprising a body member and cap member which threadably engage to form a chamber. Located within this chamber is a collet and diaphragm assembly c... | 04/19/1988 |
| 4620061 | Fully grounded, corrosion resistant electrical enclosure An electrical enclosure including a box and a cover is molded largely of plastic, but is intended for use with metallic conduit. One or more metallic inserts is molded within the box, and also another insert is molded within the cover, to provide ground c... | 10/28/1986 |
| 4553000 | Plug and receptacle with separable switch contactors A plug (10) carries terminals (38) which also act as switch contacts and which insert into a receptacle (12) with essentially zero insertion force. The receptacle also carries terminals (84) which similarily double as switch contacts. After insertion of t... | 11/12/1985 |
| 4490576 | Connector for use with jacketed metal clad cable A connector for connecting jacketed, metal clad cable to an electrical box includes a tubular metallic body with a stamped and formed retainer element preferably staked therein. This retainer element has an annular rim with radially inwardly directed fing... | 12/25/1984 |
| 4391480 | Electrical terminal An electrical terminal for a receptacle or other electrical connector and the method of making it. The terminal is preferably a cylindrical screw machine part cross-slotted at one end for receiving a male blade terminal therein in either of two angularly ... | 07/05/1983 |
| 4390114 | Hinge construction for electrical enclosures A hinge construction particularly for pivotally connecting the housing and cover of an electrical enclosure together is preferably formed integrally as part of the lid and as part of the housing so as not to require separate fasteners or hinge pins, yet t... | 06/28/1983 |
| 4362284 | Fastener for attaching electrical boxes to steel studs A stamped, sheetmetal fastener for attaching electrical boxes or the like to steel studs or the like includes a first portion designed for attachment to an electrical box and a second portion designed for attachment to one of the flanges of a metal stud. ... | 12/07/1982 |
| 4190222 | Electrical cable connector with cam lock An electrical cable connector for use in a knockout opening of an electrical box or the like includes a cam element with a slot therein arranged to receive the tip of a screwdriver transverse of its rotational axis so as to permit the application of a sig... | 02/26/1980 |
| 4074941 | Cam operated toggle for securing a light fixture or the like to a tube A hub extends into the top of a pole and has a central web. A carriage bolt extends through this web with its nut exposed on the top of the web and its head below the web within the pole. The central support of the toggle rests on and engages the bolt hea... | 02/21/1978 |
| 4032209 | Multiple socket assembly for electrical components A track has spaced rails, each of which holds a plurality of clips, each clip being at a respective station. Thus, there are a pair of clips at each station. A multiple socket unit is mountable between the rails at each station or at adjacent stations. An... | 06/28/1977 |
| 4031340 | Defeater for mechanical safety interlock for covers of explosion-proof electrical housing An explosion-proof electrical enclosure has a body, switch mounted within the body, two threaded caps cooperatively engaging manually defeatable locking bolts in the body which prevent rotation of the caps and manually operated interlocking mechanism moun... | 06/21/1977 |
| 3991905 | Hinged cover for outdoor lamp case A metal housing of a light fixture has a cover hinged over the front access opening. Within the housing is a halogen lamp or light bulb. Surrounding the lamp and facing forwardly is a reflector of generally parabolic shape. Extending across the back of th... | 11/16/1976 |
