Assignee: Esquire, Inc.

Location: NewYork, NY
No. of patents: 35

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Number	Title	Issue Date
4414600	Protection device for high intensity gaseous discharge lamp starting circuit A thickfilm manufactured resistive element that functions as a normal resistor in an HID lamp starting circuit where high voltage starting pulses are produced, but which exhibits a negative and extremely non-linear voltage coefficient of resistance charac...	11/08/1983
4400754	Spark arrestor A spark arrestor for protecting a high intensity, gaseous discharge lamp, ballast and other circuit components against being damaged or destroyed by a large build up of voltage. The arrestor includes a multi-sided low dielectric disc with star-like conduc...	08/23/1983
4364105	Stacked fixtures with angularly positioned lamps and downwardly light-directing reflectors An improved light fixture comprising a housing adapted for tower or pole top mounting and having preferably stacked upper and lower lamp compartments. One reflector in each compartment includes a segment that is located partly behind and partly over a sym...	12/14/1982
4329627	High frequency thyristor circuit for energizing a gaseous discharge lamp A circuit for energizing a gaseous discharge lamp at high frequency utilizing a thyristor, preferably an SCR. The energizing circuit for the lamp includes a resonant or tank circuit operating at an appropriate high frequency, preferably above the acoustic...	05/11/1982
4323956	Lens closure for light fixture and method for attachment An enclosure for a light fixture and the method for making such an enclosure via the securement of a plastic or glass lens, wherein the light fixture has a window which does not have to be opened in normal use for replacement of bulb, but is normally acce...	04/06/1982
4318031	Lamp, ballast and starter visual monitor A visual monitor including a single light indicator for HID lamps (not needing a starter) and a visual monitor including two light indicators for an HID lamp, such as a high pressure sodium lamp, operating in conjunction with the starter. When the lamp is...	03/02/1982
4310828	Programmed controller An electronic controller for providing one or more sequences of control outputs for a plurality of controlled devices. The controller includes a pulser which produces pulses at the rate of the frequency of an ac source, a divider for producing spaced puls...	01/12/1982
4308573	Lamp fixture including diffused low angle reflective surfaces A light reflector system for an elongated light source and having multiple reflective surfaces, some of which are treated for diffusing light, particularly those surfaces that reflect light at low reflective angles, and some of which are specular or, alte...	12/29/1981
4293901	Reflector system having sharp light cutoff characteristics A light fixture comprising parabolic reflector segments therein, the lamp being located at the focal point of the segments. One segment has an arc preferably more shallow than the other segment. The window opening is angled preferably at an angle of 60 de...	10/06/1981
4261030	Wrap-around parabolic light fixture and method for manufacture An improved light fixture for housing an elongated lamp and method for making same, the fixture having an elongated housing constructed from a continuous rectangular piece of sheet metal having four parallel bends therein forming planar side walls. The pl...	04/07/1981
4240853	Lens closure for light fixture and method for attachment An enclosure for a light fixture and the method for making such an enclosure via the securement of a plastic or glass lens, wherein the light fixture has a window which does not have to be opened in normal use for replacement of bulb, but is normally acce...	12/23/1980
4236100	Lighting circuits Circuits are disclosed for use in a gaseous-discharge lamp lighting system which provide starting pulses to the lamp and/or a source of auxiliary light. One circuit provides starting pulses and/or auxiliary light until the gaseous-discharge lamp approache...	11/25/1980
4220895	Non-interfering, overlapping high frequency signalling for lamp dimmer circuit A network for the development of a square wave in a first time period as set by the timing occurrence of a first voltage to a predetermined threshold level and another network for the development of a square wave in a second time period as set by the timi...	09/02/1980
4219761	Incandescent lamp dimmer providing control voltage IES square law compliance correction A dimmer and regulation circuit connected to an incandescent lamp load for controlling the voltage thereto from an ac source by gating off a portion of each cycle. The circuit used to provide the gating includes a pulse generator controlled by a timer pro...	08/26/1980
4213164	Electronic protection circuit incorporating voltage divider sensing, gating and triggering A protection circuit for producing one or more triggers in the presence of a monitored overvoltage condition employing a complex voltage divider network including slow-acting breakover semiconductor devices for sensing ac voltage overloads in either or bo...	07/15/1980
4209738	Regulation circuit A regulation circuit for providing timing gate signals to the dc power section of a power supply, the regulation circuit utilizing phase angle conduction of a programmable unijunction transistor. The conduction angle is determined by the occurrence of the...	06/24/1980
4204141	Adjustable DC pulse circuit for variation over a predetermined range using two timer networks A circuit for providing a dc pulse, such as to a gated semiconductor for at least partial bypass of a ballast element connected to an HID lamp, the pulse being developed within a time range of an associated ac voltage. A first timer operably connected to ...	05/20/1980
4204148	Regulation circuit A regulation circuit for providing timing gate signals to the dc power section of a power supply, the regulation circuit utilizing phase angle conduction of a programmable unijunction transistor. The conduction angle is determined by the occurrence of the...	05/20/1980
4197485	Optocoupler dimmer circuit for high intensity, gaseous discharge lamp A dimmer circuit for a high intensity, gaseous discharge lamp having a ballast with a reactive portion, the current bypass or partial bypass of which determines the brightness of the lamp, the bypass being controlled by gated bypass means, preferably in t...	04/08/1980
4181873	High frequency dimmer circuit for high intensity, gaseous discharge lamp A dimmer circuit for providing gate signal to a gated semiconductor connected for at least partial bypass operation of a ballast element of an HID lamp, the gate signal being derived from a high frequency voltage in a predetermined range. The high frequen...	01/01/1980
4175281	Ceiling mounted support structure A ceiling mounted support structure for mounting light fixtures, louvers, and the like, including at least one support piece mounted or supported by at least one building ceiling support, the piece having an elongate slot therein in which an enlarged end ...	11/20/1979
4170747	Fixed frequency, variable duty cycle, square wave dimmer for high intensity gaseous discharge lamp A dimmer circuit for an HID lamp is provided for supplying a square wave current therethrough at a constant frequency, but whose duty cycle is variable dependent on a sensed current level. The circuit employs a first pair of transistor switches for revers...	10/09/1979
4144478	Lamp system take control dimming circuit A circuit for providing remote control at a plurality of locations for a lighting system, such control functions including on/off, dimming intensity and rate of dimming. Visual indication of take control is also provided....	03/13/1979
4135223	Electronic protection circuit A protection circuit for producing one or more triggers in the presence of a monitored overvoltage condition employing photodiode networks for sensing the voltage overload, phototransistors responding to the photodiode outputs and operating gated semicond...	01/16/1979
4134044	High frequency circuit for operating a high-intensity gaseous discharge lamp A high frequency drive circuit operating as a push-pull, Class C oscillator for driving a high-intensity, gaseous discharge lamp and avoiding the use of a relatively large ballast coil. A highly stable power supply for operating in conjunction with such c...	01/09/1979
4134043	Lighting circuits Circuits are disclosed for use in a gaseous-discharge lamp lighting system which provide starting pulses to the lamp and/or a source of auxiliary light. One circuit provides starting pulses and/or auxiliary light until the gaseous-discharge lamp approache...	01/09/1979
4120023	Lens closure for sports light fixture A permanent type closure for securing a thin film lens on a light fixture which is entered from the rear for replacement purposes including a preferably metallic band and gasket....	10/10/1978
4054790	Light fixture There is disclosed a light fixture having a ballast mounted on the housing thereof by means of a metal bracket having side walls which are connected to one another to form a corner and a base wall connected to each of the side walls intermediate their opp...	10/18/1977
4047076	Emergency lighting system for gaseous discharge lamps This invention pertains to an emergency lighting circuit that operates with a high pressure, gaseous-discharge lamp and associated ballast. When the gaseous-discharge lamp goes out, after once being ignited, sufficient current is supplied to an incandesce...	09/06/1977
4028542	Faceted parabolic-type reflector system A luminaire including a segmented and faceted reflector of two sections describing a concave surface but approximately describing a plurality of paraboloid surfaces of revolution. With simple repositioning of the two reflector sections, a range of reflect...	06/07/1977
4009387	Automatic energy control lighting system with automatically variable dc source An automatically variable d.c. voltage source supplies a control signal to a dimmer circuit that controls the brightness of a high intensity gas discharge lamp in response to a varying d.c. voltage. The automatically variable d.c. voltage source produces ...	02/22/1977
4000406	Light fixture There is disclosed a light fixture having a ballast therein comprising a substantially enclosed steel case which is mounted on a wall of the steel housing of the fixture and substantially filled with a potting compound in which a magnetic core and coil de...	12/28/1976
3965346	Light fixture mounting apparatus A mounting bracket for a lamp fixture fixedly securable to a mounting pad on the fixture via a key-hole slot arrangement and providing adjustment for the fixture through an aiming range of nearly 180°....	06/22/1976
3955702	Enclosed box-like housings An enclosed, box-like housing for a light fixture which is made up of a skeleton frame comprising elongate frame members having their ends connected by corner fittings to form openings between opposite pairs of the frame members, and panels held in place ...	05/11/1976
3943355	Luminaire latch and hinge A spring-loaded, plunger-type unit operating within a recess about a window panel in a luminaire and its housing. Preferable two such units operate within one recess and two other such units operate in an opposite parallel recess so that either pair may b...	03/09/1976

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Assignee: Esquire, Inc.