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Thomas Edison obtained a patent for an electrographic vote recorder.
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| Number | Title | Issue Date |
| 6505640 | Gas-pressure regulator A gas-pressure regulator has a body formed with a gas inlet and a gas outlet defined therein, a diaphragm separating the body from the bonnet, a lifting rod extending downward from the diaphragm, a pair of parallel protrusions projecting upward from the i... | 01/14/2003 |
| 5850846 | Handle assembly for single-control valve A single-control valve having a valve housing and a stem projecting along a stem axis from the housing and displaceable relative to the housing to control flow through the valve has a handle assembly having a handle body having an actuating arm, a cup-sha... | 12/22/1998 |
| 5562119 | Mounting arrangement for control lever on an industrial truck The improvement in an industrial truck having a container, an operator station and an adjustable control valve fixed on the truck adjacent to the container comprising a control lever for the control valve mounted on a panel member pivotally mounted on the... | 10/08/1996 |
| 5301708 | Rotary plug valve actuator and associated rotary plug valve and associated method A rotary plug valve actuator comprising a mounting bracket, a ball screw mechanism pivotably mounted to the mounting bracket and a lever pivotably mounted to the ball screw mechanism. The ball screw mechanism includes a ball screw shaft and a ball nut. Th... | 04/12/1994 |
| 5074325 | Pivoting control valve actuator and support assembly A steam turbine control valve actuator for lever-operated control valves includes a servomechanical actuator with a reciprocable rod. Such servomechanical actuator is mounted upon a support assembly that is, in turn, pivotably mounted to the control valve... | 12/24/1991 |
| 4901753 | Float assembly valve A valve assembly of non-metallic construction which requires no tools for disassembly and servicing. A plunger provided with longitudinal channels is activated by a double arm yoke which is acted upon by the float arm. Dual ports provide paired inlet stre... | 02/20/1990 |
| 4877050 | Valve handle An elongate handle for attachment to the stem of a valve provided with a clamp for receiving the stem and a bolt and nut for drawing the clamp into clamping engagement with the stem.... | 10/31/1989 |
| 4768545 | Actuator for air conditioning system An air conditioner assembly of the type including an air flow housing, an air flow valve rotatably mounted in the housing, and an actuator mounted on the housing. The actuator includes a rod extending therefrom. The rod and valve include first and second ... | 09/06/1988 |
| 4513771 | Air valve An air valve is disclosed having a valve plate with a snap-in lever-bearing at one end and a similar lever-bearing at the opposite end or optionally a snap-in bearing without a lever at the latter end.... | 04/30/1985 |
| 4505409 | Beverage-dispenser valve arrangements In a beverage dispenser of the type in which conditioned liquid is to be tapped through a bottom opening of a bowl normally closed from within by a valve member, unseating of the valve member and attendant gravitational release of liquid are conveniently ... | 03/19/1985 |
| 4224959 | Clamp for liquid-dispensing valve A clamp usable in the mounting of a lever-actuated valve unit on a fitting, and in the operation of a lever on such unit when the unit is so mounted, where mounting is accomplishable through the rotation of a nut in the fitting relative to the valve unit,... | 09/30/1980 |
| 4078763 | Oil extractor for vehicle engines and the like This invention relates to a shut-off valve type oil extractor that can be screwed into an oil pan in a vehicle engine or the like, and more particularly it relates to an oil extractor of the said type which is characterized particularly in that it is lock... | 03/14/1978 |
| 3952764 | Single lever faucet construction A single lever faucet construction utilizing a removable cartridge assembly and improved force balance and friction control on an operating ball cam member. A pair of valve members are mounted in the cartridge in side-by-side relationship with cam followe... | 04/27/1976 |
