Did You Know...
...that a workman who left the soap mixing machine on too long was responsible for making Ivory Soap? He was so embarrassed by his mistake that he threw the mess in a stream. Imagine his dismay when the evidence of his error floated to the surface! Result: Ivory soap, the soap that floats.
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| Number | Title | Issue Date |
| 5451144 | Air-operated pump An air-operated pump includes a pair of poppet valves affixed to a vertical valve shaft and arranged so that the upper valve is closed when the lower valve is open, and vice versa. When a connected displacer is immersed in tank fluid, its buoyancy in comb... | 09/19/1995 |
| 5248243 | Pneumatically operated and controlled fluid pump A pneumatically operated and controlled pump which is capable of maintaining its efficiency and reliability in various environments. The pump head contains a spool and sleeve valve assembly operated in response to a signal pressure. The assembly controls ... | 09/28/1993 |
| 5186611 | Pump arrangement for pumping liquid by means of compressed air A pump arrangement that has a pump chamber with an inlet opening and a discharge opening. A discharge pipe is connected to the outlet opening to carry liquid, etc., from the pump chamber. An inlet pipe is connected to the inlet opening and extends downwar... | 02/16/1993 |
| 5141406 | High-lift tubular pump A tubular pump comprises a "tube-within-a-tube" having a lower end adapted to be submerged in a liquid that is under a pressure p1, for example a pressure of one atmosphere. The inner and outer tubes are in communication with each other adjacen... | 08/25/1992 |
| 5011376 | Valve control system for an air displacement type pump A valve control system for an air displacement type pump operates the inlet or outlet valve in accordance with the pressure differential between the inlet line and the main pump chamber or the outlet line and the main pump chamber respectively such that t... | 04/30/1991 |
| 5006046 | Method and apparatus for pumping liquid from a well using wellbore pressurized gas There is provided a method and apparatus for removing liquid from a well using well bore pressurized gas. A U-shaped tube having a small orifice near the bottom thereof is received in the well. The upper portions of both legs of the tube are connected to ... | 04/09/1991 |
| 4945955 | Hazardous waste removal devices An apparatus for transferring toxic waste liquid directly into a 55 gallon waste drum includes a mobile drum cradle that lifts the drum so it can be moved to a container presently holding the toxic liquid. A vacuum is produced in a transfer reservoir, and... | 08/07/1990 |
| 4606703 | Fluidic pumping systems with control means responsive to liquid level A fluidic pumping system comprises a reverse flow diverter positioned below the level of a liquid to be pumped and inserted between a charge vessel and a delivery pipe. A control system including pressure-responsive devices effects alternate pressurizing ... | 08/19/1986 |
| 4462760 | Method and apparatus for metering liquids A method and apparatus for delivering metered quantities of liquid wherein the liquid is circulated through a chamber to fill the chamber with liquid and circulation is temporarily terminated with the chamber filled with liquid. While circulation is termi... | 07/31/1984 |
| 3949612 | Liquid sampling Successive samples are taken periodically from a body of liquid with the aid of pressurized fluid serving as both timing medium and sample propellant. Alternative high-pressure and low-pressure paths for the fluid correspond to high-lift and low-lift uses... | 04/13/1976 |
| 3949613 | Liquid sampling Successive samples are taken periodically from a body of liquid with the aid of pressurized fluid serving as both timing medium and sample propellant. The sampling apparatus is adjustable as to interval between successive samples, duration of taking of ea... | 04/13/1976 |
