Did You Know...
...that the x-ray was discovered purely by accident? When German physicist Wilhelm Konrad von Roentgen was experimenting with cathode rays in 1895, he put an activated Crookes tube in a book and went out to lunch. When he returned, he discovered that a key that had also been placed in the book showed up as an image on the developed film!
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| Number | Title | Issue Date |
| 7271870 | Liquid crystal display device and method of making same A display device includes a substrate, a gate line formed over the substrate, a first insulating film formed over the substrate and the gate line, a semiconductor film formed over the first insulating film, a drain electrode formed over the semiconductor film, a sou... | 09/18/2007 |
| 7125256 | Reorientable electrical outlet A reorientable electrical outlet having a housing cavity in a stationary housing and a rotatable electrical female receptacle seated therein is disclosed. Preferably, the rotatable female electrical receptacle includes a set of electrical conductors situated in elec... | 10/24/2006 |
| 7048574 | Resilient contact structure with bypass wire and camera having such contact A contact structure having a spring with electro conductivity. The spring is fixed at one inner end side of a battery housing by engaging a plurality of inflection parts of the spring to one end side of the battery housing. The spring urges the battery to the other ... | 05/23/2006 |
| 6753938 | Liquid crystal display device using both reflection and transmission A liquid crystal display device comprises an array substrate including a plurality of pixel electrodes, a counter substrate including a counter electrode facing the pixel electrodes, and a liquid crystal layer which modulates reflected and transmitted light of each ... | 06/22/2004 |
| 6350155 | Plug connector A plug connector with a hollow, cylindrical, metallic housing (1), within which is centrically disposed an inside contact pin (8, 9, 10) extending at least approximately over the entire axial length of the housing (1). In order to make contact with the re... | 02/26/2002 |
| 4553797 | Mounting bracket A visor rod mounting bracket has a base with a collar having an opening therein for receiving a rod. The collar integrally includes a sidewall having an aperture extending therethrough and communicating with the opening and locking means mounted to either... | 11/19/1985 |
| 4417775 | Electrical connector device An electrical connector device comprises at least one first conductor fixed to a first insulator, at least one second conductor fixed to a second insulator which is angularly movable with respect to the first insulator, a third conductor in the form of a ... | 11/29/1983 |
| 4183598 | Contact device for the transmission of electric current between a stationary contact part and a movable contact part In a contact device for the transmission of electric current between a stationary contact and a movable contact wherein the stationary contact has walls at least partially encircling the movable contact, resilient elements transmit the current and are pos... | 01/15/1980 |
| 4157854 | Steering column electrical connector arrangement An electrical connector arrangement for a motor vehicle steering assembly which includes a stationary steering column member rotatably supporting a steering shaft fixed with a steering wheel and characterized in that the steering column member supports a ... | 06/12/1979 |
| 4063789 | Signalling arrangement for automotive vehicle steering wheels The hub of a vehicle steering wheel is provided with signaling contacts one of which is connected to a source of electric current through a connector which comprises an upwardly and downwardly movable conductor whose end remote from the contacts is anchor... | 12/20/1977 |
| 4041439 | Potentiometers A potentiometer including a resistance track and a wiper element adapted for relative movement with respect thereto includes first, second and third terminals connected respectively to each end of the resistance track and to the wiper element. The potenti... | 08/09/1977 |
| 3937542 | Electrical brush contact An electrical brush contact for use in an electrical circuit requiring the conduction of electrical energy between relatively moving objects, said contact having a contactor block mounted on one of said objects and a block engaging brush mounted on the ot... | 02/10/1976 |
