Did You Know...
...that to encourage use of his new invention, the shopping cart, market owner Sylvan Goldman hired fake shoppers to push the carts around his store in Oklahoma City? Seems his customers were reluctant to give up their hand-carried baskets.
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| Number | Title | Issue Date |
| 7331692 | Light beam projector with filter set rotating on its own axis A light beam projector has a light source and a reflector arranged to have light generated by the light source converge into a light beam. The reflector has a hollow curved surface with a focal point where the light source is positioned, and a filter able to change ... | 02/19/2008 |
| 7156537 | Strip light shade An after-market shade for a strip light, typically containing several bare bulbs, either clear or frosted. The shade is a molded mainly one-piece translucent shade, or a translucent shade with two end caps for mounting. The shade is not attached to the fixture but t... | 01/02/2007 |
| 7086775 | Backlight module for a liquid crystal display device A backlight module for a liquid crystal display device is disclosed. The backlight module includes a bottom housing having at least one side frame that has a terminal installation part; a lamp bracket having a pair of opposing lamp supporters and a pair of opposing ... | 08/08/2006 |
| 7083297 | Flashlight with lens for transmitting central and off-axis light sources A flashlight has a lens having an optical axis, with a first light source positioned on the optical axis. A second light source is spaced apart from the first light source away from the optical axis, and the lens has an aperture registered with the second light sour... | 08/01/2006 |
| 4634936 | Intrinsically safe miner's lamp An intrinsically safe battery pack arrangement for electrically powering electrical devices is disclosed. The power pack has a device for electronically determining a short in a cable or device and switching off the voltage to the power pack. The electron... | 01/06/1987 |
| 4428039 | Safety lamp apparatus including means for preventing accidental breakage of a bulb member Safety lamp apparatus, suitable for use as a miner's cap lamp, includes a housing body closed at one side by a plastic light transmitting member. A bulb member is yieldably received in the housing body and is operable, when energized, to provide a filamen... | 01/24/1984 |
| 4345306 | Luminaire mounting device Wall mounted luminaire of hazardous duty type has mounting arm designed to protect luminaire parts from excessive pressure of explosive gases. The mounting arm is formed with an elongated wire passage of relatively small diameter wherein the gases are coo... | 08/17/1982 |
| 4316241 | Method and apparatus for controlling reflected energy including dual light transmitting means for producing a spot to flood configuration Apparatus for controlling reflected radiant energy to progressively vary distribution of the reflected radiant energy between spot and flood configurations comprises a housing body having a reflector surface, a lamp mounted in the housing body at the foca... | 02/16/1982 |
| 4282564 | Triangular enclosure for tubular light source An angle iron forms two sides of a right isosceles triangular housing. These sides are each apertured and the apertures are provided with metal-framed lens plates which bolt onto the housing sides. Preferably, in one instance the lens material is mounted ... | 08/04/1981 |
| 4247884 | Fluorescent mine lighting fixture The fixture includes a mount assembly preferably including a cage. A lamp/bar assembly slides longitudinally into the mount assembly cage. The power cable of the lamp/bar assembly extends through a packing end cap. A transparent/translucent shatterproof p... | 01/27/1981 |
| 4225906 | Luminaire apparatus with multiple light sources and methods of operating same A luminaire housing body is formed with a reflector chamber closed at one side by a radiation transmitting member. At an opposite side, the housing is extended to form a socket enclosure. A lamp socket member is rotatably mounted in the socket enclosure a... | 09/30/1980 |
| 4214295 | Portable electric lamp adjustable from spot beam to diffused beam A portable electric lamp including a body 1 mounting a lens 2, a lens holder 3, a reflector 5, and a bulb holder 6 is provided with a translucent diffuser sleeve 7 which has slots 8 which extend lengthwise thereof. The diffuser sleeve is coaxial with and ... | 07/22/1980 |
| 4186432 | Lamp for use in subterranean applications A lamp for use in subterranean galleries such as mines in which the cold-cathode discharge tube is received in a housing which, in turn, is removably mounted in a receptacle and is held in place by a ring clamping a flange of the housing against a flange ... | 01/29/1980 |
| 4158880 | Mine machine light The light has an explosion-proof housing that is of generally triangular transverse section, with no glass on the narrow front or top wall. In mine use, should rock drop onto the housing it is likely to strike glass parts only a glancing blow. The glass p... | 06/19/1979 |
| 4156893 | Portable lamp A portable electric lamp comprising a tubular transparent housing, a fluorescent lamp in the housing, an arrangement of sockets and starter connected in a circuit for supplying electric current to the lamp, and a removable elongated reflector element in t... | 05/29/1979 |
