Did You Know...
...that Thomas Edison's patent application on his phonograph was approved by the Patent Office in just seven weeks? In contrast, it took Gordon Gould, the inventor of the laser, 30 years to obtain his patent -- finally awarded in 1988!
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| Number | Title | Issue Date |
| 7358452 | Architecture and method of fabrication for a liquid metal microswitch (LIMMS) A switch comprises a first wafer having a thin-film structure defined thereon, a second wafer having a plurality of features defined therein, and a seal between the first wafer and the second wafer forming a two-wafer structure having a liquid metal microswitch defi... | 04/15/2008 |
| 7164090 | Liquid metal switch employing a single volume of liquid metal A switch comprises an input contact and at least one output contact, a single droplet of conductive liquid located in a channel, the droplet being in constant contact with the input contact, and a heater configured to heat a gas. The heated gas expands to cause the ... | 01/16/2007 |
| 6756552 | Multi-pole conductive liquid-based switch device The multi-pole, conductive liquid-based switch device includes an elongate passage, a first cavity, a second cavity, at least four electrodes disposed along the length of the passage, channels that extend from the passage, non-conductive fluid located the cavities a... | 06/29/2004 |
| 5602371 | Motor vehicle electrical system deactivating switch A motor vehicle electrical system disconnect switch is disclosed which operates to disconnect the positive lead of the battery of a motor vehicle from its electrical system and to ground the positive lead of the vehicle alternator upon either the applicat... | 02/11/1997 |
| 5058520 | Apparatus for influencing the position of a boat in water An apparatus for influencing the position of a boat in water, with trim flaps disposed on either side of the longitudinal axis of the boat, the flap angles of said trim flaps always being adjustable by a drive with a control device, which acts upon all th... | 10/22/1991 |
| 4493956 | Impact switch A resettable impact switch is disclosed having a non-conductive body with a cavity therein. A pair of terminals extend from opposite sides of the body and have their reverse ends extending into the cavity. A pool of mercury is disposed in the cavity to el... | 01/15/1985 |
| 4045307 | Structure for switching electrical current and cell comprising same A structure for switching electrical current, the structure comprising a switch having two pairs of terminals and two modes of operation. The structure, in addition, includes a first electrically conductive means for connecting the terminals of one pair t... | 08/30/1977 |
| 3983350 | Liquid contact switch assembly incorporated within wrist watch casing An electric switch for a wrist-watch equipped with electric or electronic circuitry requiring a on/off switching at will. An enclosure assembly defines an enclosed chamber wherein an electrically conductive liquid can move responsive to different position... | 09/28/1976 |
| 3973092 | Acceleration sensing switch of the liquid contact type having time delay structure Acceleration sensing apparatus comprises a casing having a pair of substantially perpendicular passages communicating with each other and accommodating spaced apart, normally open electrical contacts. One of the passages contains mercury which is operable... | 08/03/1976 |
