Quotables
"That the automobile has practically reached the limit of its development is suggested by the fact that during the past year no improvements of a radical nature have been introduced."
Scientific American ; Jan. 2 edition, 1909
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| Number | Title | Issue Date |
| 7073974 | Process and apparatus for highway marking A system for forming and applying a coherent refractory mass on the surface of a road wherein one or more non-combustible materials are mixed with one or more metallic combustible powders and an oxidizer, igniting the mixture so that the combustible metallic particl... | 07/11/2006 |
| 7052202 | Process and apparatus for highway marking A process and apparatus for forming a coherent refractory mass on the surface of a road wherein one or more non-combustible materials are mixed with one or more metallic combustible powders and an oxidizer, igniting the mixture so that the combustible metallic parti... | 05/30/2006 |
| 6969214 | Process and apparatus for highway marking A process and apparatus for forming a coherent refractory mass on the surface of a road wherein one or more non-combustible materials are mixed with one or more metallic combustible powders and an oxidizer, igniting the mixture so that the combustible metallic parti... | 11/29/2005 |
| 5611672 | Pumping chamber movement activated downhole pneumatic pump A floatless pneumatic pump having an elongated housing including a sealable fluid entry aperture and a pipe communicating between an interior and an exterior of the housing, with the housing movably attached to the pipe for axial displacement therewith. T... | 03/18/1997 |
| 5228840 | Positive displacement pumps A positive displacement pump comprises a mass such as a liquid filled pressure chamber or an annular ring which is rotated at high speed about a first axis so that centrifugal force acting on the liquid or ring creates zones of differential pressure withi... | 07/20/1993 |
| 4818706 | Reagent-dispensing system and method Liquid-transfer equipment and method for dispensing liquid reagents for chemical assays, which equipment and method provide time-controlled metering of the quantity of liquid dispensed even though the liquid supply reservoir is not pressurized.... | 04/04/1989 |
| 4770610 | Frail material slurry pump A pump for pumping a slurry of frail material is provided by a rigid chamber which is connected to a source of negative air pressure when an inlet valve is open and an outlet valve closed to suck the slurry through the open inlet valve into the chamber, t... | 09/13/1988 |
| 4352639 | Pneumatic pump A submersible pump casing is supported for limited vertical movement. Buoyancy of the casing changes according to the amount of water in the chamber. When pressurized air continuously supplied to the chamber has discharged most of the water, the casing ri... | 10/05/1982 |
| 4181470 | Gas-operated liquid pump A gas-operated liquid pump which includes an outer, stationary compartment and an inner compartment movable between upper and lower positions in the outer compartment. The inner compartment has positive buoyancy in the liquid to be pumped. Valve means ope... | 01/01/1980 |
