Assignee: Electronic Theatre Controls, Inc.

Location: Middleton, WI
No. of patents: 22

Number	Title	Issue Date
D654207	Lighting fixture	02/14/2012
8033528	Lift assembly, system, and method A lift assembly system and method can include a substantially rectangular tube, a motor operably connected to first and second traction drives and a rotatable drum and structurally connected to one end of the tube, a head block fixed to the opposite end of the tube,...	10/11/2011
7839391	Segmented touch screen console with module docking A segmented touch screen overlies the display or displays of a console having an operating system and display controller for the display. A touch screen controller is continuously connected to each of the touch screen segments and separate touch position information...	11/23/2010
7775506	Lift assembly, system, and method A lift assembly system and method can include a substantially rectangular tube, a motor operably connected to first and second traction drives and a rotatable drum and structurally connected to one end of the tube, a head block fixed to the opposite end of the tube,...	08/17/2010
7382595	Low voltage overcurrent protection for solid state switching system A current sensing transformer having a low impedance primary winding is connected in series with a filter and load circuit supplied with output current by a high frequency switching PWM power supply such as a sinewave dimmer. Sensed output current is supplied to a m...	06/03/2008
7369386	Overcurrent protection for solid state switching system Current sensing resistors are connected directly to output terminals of MOSFETs forming the series switching stage of a PWM sinewave dimmer. An analog sensed current signal is coupled through an EMI resistant current link to comparators that provide an overcurrent i...	05/06/2008
7233112	PWM switching power supply control methods 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...	06/19/2007
7232236	Floor marking apparatus and system, and method of marking a floor A floor marking system includes a floor having a predetermined location intended for use of a predetermined character, the predetermined location being marked with impinging light. The floor marking system also includes a lighting unit having a light source for mark...	06/19/2007
7033047	Compact shutter assembly for a luminaire A shutter section includes a stack of circular plates independently rotatable in a nest formed as a laminar formation of rings. The plates have central openings defining a light path. Four central plates in the stack are shutter guide plates with radial guide slots ...	04/25/2006
7019469	Sinewave dimmer control method An input line filter separates an ac sinusoidal power source from a power switching stage having a series switching section and a clamp switching section. Both the series switching section and a clamp switching section include complementary pairs of high power and h...	03/28/2006
6979106	Control system for optical media in a luminaire A zoom lens system includes a motor driven lens assembly that is movable on a track in a normal movement range for adjusting the light beam range angle of a luminaire. A pair or doors are pivoted to opposite sides of the frame of the lens assembly and are normally b...	12/27/2005
6939026	Shutter assembly for a luminaire A shutter section includes a stack of circular plates independently rotatable in a nest formed as a laminar formation of rings. The plates have central openings defining a light path. Four central plates in the stack are shutter guide plates with radial guide slots ...	09/06/2005
6932491	Lamp assembly and lamp for a luminare A theatrical luminaire for entertainment and architectural applications includes a lamp socket accessible from the exterior of the luminaire housing. A lamp includes a base, a bulb on one side of the base and a handle on the other side. The handle is grasped to inse...	08/23/2005
6902302	Gel scroller assembly for a luminaire A cassette containing a gel scroll is releasably attached to the forward portion of a housing of a luminaire. A light path through the cassette is aligned with a light exit opening of the luminaire. A gel scroll is wound upon a pair of drums in the cassette and inte...	06/07/2005
6903531	Circuit for driving a stepper motor and method of controlling a stepper motor driver A driver circuit is provided for a stepper motor which utilizes a processor that outputs a PWM signal. The driver circuit includes an H-bridge circuit having first and second inputs, and a switching circuit having an input and an output. The first H-bridge input and...	06/07/2005
6849943	Power module package for high frequency switching system A heat sink with fins has a flat, planar surface soldered to a metallic layer at one surface of a flat, planar ceramic layer. The opposite surface of the ceramic layer has a metallic pattern including base areas for high power, high frequency load switching MOSFETs....	02/01/2005
6707256	Dimmer pack A self contained multiple dimming channel package includes a housing with a main power circuit board supported on its bottom wall and a control circuit board extending laterally and vertically to baffle air flow through the housing. A cross flow cooling fan forces a...	03/16/2004
6628089	Extraction of accessory power from a signal supplied to a luminaire from a phase angle dimmer Power for one or more luminaire accessories is extracted from a series of lamp operating pulses provided by a phase angle dimmer. A DC power supply is connected to the output of the dimmer to develop and store DC accessory power. A lamp controller is conn...	09/30/2003
6270239	Fader wheel for lighting control console A fader wheel assembly for a lighting control console includes a fader wheel having a single hub mounted at an acute angle to the top wall of the console. The inclined orientation positions approximately half of smooth, rounded outer wall and rim surfaces...	08/07/2001
6146159	Cover assembly for wall mounted electrical device enclosure A cover assembly for a wall mounted electrical device enclosure includes a mounting bracket that can be attached to the enclosure and a cover plate that is removeably installed onto the mounting bracket. The mounting bracket includes a rigid latch tang an...	11/14/2000
6092914	Zoom lighting fixture having multifunction actuator A lighting fixture configured to image a high-intensity beam of light at a distant location with a variable beam spread and a variable image distance. The lighting fixture includes an illuminator mounted on a front projection system. The illuminator inclu...	07/25/2000
6002563	Plug-in power module incorporating ground-fault detection and reporting An improved plug-in power module for providing a controlled amount of electrical power to one or more remote lighting fixtures or other load is disclosed, the module being configured to sense a ground fault or other current imbalance at the load and, in r...	12/14/1999

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Assignee: Electronic Theatre Controls, Inc.