Did You Know...
...that two musicians were responsible for the invention of color print film? Fascinated by photography, Leopold Godowsky and Leopold Mannes worked together to produce an easy-to-use, practical color film. They worked full time as music teachers and gave concerts while experimenting during their off hours in Mannes' kitchen. Their success earned them full-time, well-paying jobs at Kodak and their efforts resulted in Kodachrome film, which was introduced in 1935.
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| Number | Title | Issue Date |
| 7247222 | Electrochemical processing cell Embodiments of the invention may generally provide a small volume electrochemical plating cell. The plating cell generally includes a fluid basin configured to contain a plating solution therein, the fluid basin having a substantially horizontal weir. The cell furth... | 07/24/2007 |
| 6435845 | Air driven devices and components therefor An air driven double diaphragm pump has two opposed pumping cavities with diaphragms extending thereacross. A shaft extends between the diaphragms and through an actuator housing. The housing includes a control valve assembly having a control valve to dir... | 08/20/2002 |
| 6152705 | Air drive pumps and components therefor An air driven double diaphragm pump has two opposed pumping cavities with diaphragms extending thereacross. A shaft extends between the diaphragms and through an actuator housing. The housing includes a control valve assembly having a control valve to dir... | 11/28/2000 |
| 5894781 | Hydraulic hammer A hydraulic hammer for driving a pile into soil in which an impact weight is arranged for being driven with reciprocating motion along guideways in a casing by a double-acting hydraulic cylinder. A pump having a drain line and a pressure line is connected... | 04/20/1999 |
| 5024142 | Cyclically operating fluid drive motor with magnetically controlled diaphragm valves Presented is a fluid drive motor that may be attached to a conventional garden hose, for instance, to effect reciprocating motion of a drive shaft that may be connected to a utilitarian device, such as a scrub brush. The fluid drive motor is provided with... | 06/18/1991 |
| 4610381 | Drywall tool A drywall tool provides tactile and audible feedback to the user, as a fastener is driven by frequent multiple blows, to indicate when the fastener is properly driven, and the drywall dimpled, without tearing the paper facing of the drywall. Dimpling appa... | 09/09/1986 |
| 4452573 | Variable pilot chemical pump A chemical pump actuator utilizes a variable pilot for operation of the piston power unit and an attached chemical injector. The pilot structure includes a pair of valve assemblies for regulating the flow of a power fluid into and from the piston cylinder... | 06/05/1984 |
| 4390035 | Liquid mixing systems A water-type spray application system employing a hydraulically-operated motor which is operated by the source of supply of the water or base carrier liquid and where the hydraulic motor dependently controls the amount of chemicals injected into the water... | 06/28/1983 |
| 4329806 | Fluid engine A fluid engine for use in pneumatically operated toys such as wheeled vehicles or airplanes. The engine housing has a fluid input cavity which is in continuous fluid communication with a source of compressed air, a fluid delivery cavity which is in contin... | 05/18/1982 |
| 4305327 | Pressurized gas engine An engine is provided which converts pressurized gas into useful mechanical energy. The engine uses pressurized gas in such a way to avoid contact between the gas and sliding metal parts. As such, the engine is particularly adapted for use with naturally ... | 12/15/1981 |
| 4296672 | Reciprocating piston-cylinder combination and valving control therefor A piston-cylinder combination having a piston arranged for reciprocating movement within a cylinder under fluid pressure, the fluid pressure being ultimately delivered to the sides of the piston with a connector rod from the piston controlling the movemen... | 10/27/1981 |
