Electronic Theatre Controls, Inc.

Jme, Inc.

Kevin Burke

John P Thurk

John Udelhofen

Eric G Rasmussen

Thomas Barthel-Steer

A theatre raceway comprising an outlet assembly and a back shell. The outlet assembly includes an electrical component mounted to an outlet frame having wire stays for guiding an electrical wire (e.g., a communication wire or a power wire). The wire stays are spaced apart to facilitate access to the wires. The back shell is secured to the outlet assembly and covers the wire stays. In one embodiment, the raceway further comprises an alignment feature that aligns the back shell with the outlet assembly. For example, the alignment feature can comprises a tab on the outlet assembly and a recess on the back shell. The raceway can also include a fastener securing the back shell to the outlet assembly, wherein the fastener includes a head positioned in a recessed portion of the back shell.

Theatre raceway assembly for electrical and communication distribution

A breaker module comprises a breaker housing defining a bottom surface, a line side connector, a module mount adapted to engage a board mount, a platform protruding from the bottom surface between the line side connector and the module mount, and breaker connections recessed into the platform positioned between the line side connector and the module mount. The platform is dimensioned to mate into the well to facilitate coupling of the breaker connections to the board connections. In another aspect, the breaker module comprises a breaker housing defining a bottom surface, a line side connector, a module mount, a platform protruding from the bottom surface between the line side connector and the module mount, and breaker connections mounted on the platform. At least two of the breaker connections are recessed into the platform and do not protrude beyond the platform.

Breaker module with recessed breaker connections

Automatic transfer switch for switching an electrical load between two power sources. In one example, the automatic transfer switch includes four latching relays and an electronic controller. A first power source line connection is connected to an electrical load line connection via a first latching relay. A first power source neutral connection is connected to an electrical load neutral connection via a second latching relay. A second power source line connection is connected to the electrical load line connection via a third latching relay. A second power source neutral connection is connected to the electrical load neutral connection via a fourth latching relay. The electronic controller connects the second power source to the electrical load when a voltage of the first power source is less than a first threshold, and connects the first power source to the electrical load when the voltage is greater than a second threshold.

Automatic transfer switch

A breaker assembly is disclosed comprising a breaker board having a bus bar including a first engagement feature and a breaker module having a line side connector including a second engagement feature engaging the first engagement feature to inhibit separation of the breaker module from the breaker board. The breaker board can further include a board mount having a first alignment feature, and the breaker module can further include a module mount engaging the board mount and having a second alignment feature engaging the first alignment feature. In another aspect of the invention, the breaker board includes board connections, the breaker module includes breaker connections (e.g., blind mate connections), and the board connections are engaged with the breaker connections. In another aspect of the invention, the breaker module includes a ledge that defines an undercut to facilitate prying of the breaker module from the breaker board.

Breaker assembly with mating platform and well connection

The solid state switching section of a high frequency PWM switching power supply may encounter problems in accurately regulating output power when the requested output power is above a threshold level, the threshold level typically being a high level approaching one hundred percent of the power of the sinusoidal AC power source. Below the threshold level, the power supply is operated in a full PWM mode to regulate the output power level. Above the threshold level, the power supply is operated in a full on, continuously conducting mode in a central part of the half cycles of the AC supply. Outside of this central portion, the power supply is operated in the in the PWM mode, using a duty cycle within the capability of the solid state switching section. The output power level is regulated by varying the duration of the central full on portion of the half cycle. A similar control method is used for reducing heat generated by the solid state switching section of the power supply.

PWM switching power supply control methods

An electrical connector having a plurality of contacts divided into three groups based on height and location where the first group is tall in a peripheral array, the second group is short in the peripheral array and the third group is short in a smaller inner array. A first electrically conductive plate is mounted to the first group of contacts and fastened by screws which are received in central longitudinal threaded holes in the first group of contacts. In a like manner, a second electrically conductive plate is connected to the third group of contacts using screws which are received in central longitudinal holes of the short contacts. Each of the plates has a central opening which is fitted with a screw which allows electrical connections to be made with other circuitry or components.

Growing community of inventors

Madison, WI, United States of America

Kevin Burke