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 |
| 7367366 | Pumping device A pumping device includes a container having a cover structure. A piston is movably received in the container and is manually operable. The cover structure has an air inlet valve and a slide switch, which, when properly set, allow air to be sucked into or expelled o... | 05/06/2008 |
| 7316544 | Automatic pneumatic pump An automatic, pneumatic pump having a chamber that is gravity fed through a top opening and through a vertical tube with waste liquid. A buoyant plunger sits on an air inlet nipple, which nipple is located at the bottom of the chamber. Liquid entering the chamber ca... | 01/08/2008 |
| 7222546 | Method and apparatus for sediment characterization A method for characterizing contaminants within sediment comprising positioning a sampler in a continuous manner within the sediment, exposing the sampler to the sediment for a dwell time, retrieving the sampler, and analyzing the sampler. The sampler is exposed to ... | 05/29/2007 |
| 7007456 | Dual chamber pump and method Disclosed is a pneumatically powered high-pressure and lightweight fluid pump. The pump is useful for pumping fuel for liquid rocket engines and for pumping water, such as for fire suppression. During operation of the pump, liquid is drained from a tank into a pump ... | 03/07/2006 |
| 6945755 | Fluid controlled pumping system and method A fluid level controlled pumping system includes a pumping unit disposed within a fluid cavity. The pumping unit includes an inlet operable to receive a fluid to be pumped from the fluid cavity. The system also includes a valve slidably coupled to the pumping unit. ... | 09/20/2005 |
| 6808370 | Gas pressure driven tank fluid pump having float and snap-acting rotary valve A gas pressure driven fluid pump comprising a pump tank having a liquid inlet and a liquid outlet. A float, carried within the interior of the pump tank, is operable to move between a low level position and a high level position. A snap-acting valve is operatively c... | 10/26/2004 |
| 6604910 | Fluid controlled pumping system and method A fluid controlled pumping system includes a pumping unit disposed within a fluid cavity. The pumping unit includes a passage extending to a suction end of the pumping unit. The system also includes a pressure source coupled to the passage and operable to... | 08/12/2003 |
| 6234762 | Reversible venturi-effect pump A pump for both filling and emptying containers with liquids, flowable solids, etc. has a body which is screwed into a bung hole in the top wall of the container. According to the state of evacuation or pressurization produced in the container by the pump... | 05/22/2001 |
| 6174138 | Float operated devices A float operated device such as a pressure powered pump has a chamber 30 in which a float 32 is movable. The float 32 has a low profile form, having an aspect ratio greater than 2. The float operates a toggle mechanism 46 comprising an input lever 34 and ... | 01/16/2001 |
| 6099260 | Pump trap assembly having multiple pivot axes A pump trap assembly with multiple pivot axes. The pump trap assembly includes a mounting bracket for mounting the trap assembly to a structure. A first pivot arm having a length is pivotally mounted to the mounting bracket about a first pivot axis. A sec... | 08/08/2000 |
| 6089829 | Pump for hot corrosive melts The invention relates to a pump for discharging hot corrosive liquids, in particular molten salts, consisting of a pump pipe (1), a discharge pipe (2) dipping into the liquid and at least two valves (3, 4), whereby the liquid is discharged periodically by... | 07/18/2000 |
| 6045336 | Pump and valve for leachate extraction of heavier than water fluids In combination with a pump, a valve for operation at the interface between underlying heavier liquid and overlying lighter liquid is disclosed. The valve includes an inlet within the heavier liquid communicated from a valve seat to a conduit which typical... | 04/04/2000 |
| 5813839 | Gas driven external combustion heat engine pump having the outlet pipe connected to a variable buoyant float An external-combustion heat engine pump, one version consisting of four chambers, one liquid and one gas pumping chamber, a gas heating chamber and a gas cooling chamber. The two pumping chambers are connected by two tubes, one near the bottom of the cham... | 09/29/1998 |
| 5715856 | Liquid flow control apparatus A liquid flow control apparatus (5) suitable for handling milk from a milking machine, comprising a first chamber (10) that comprises an inlet (11) for the milk, an outlet (12) for connecting to a vacuum pump, and an outlet (14) for the milk to flow by gr... | 02/10/1998 |
| 5662459 | Pressurized gas driven liquid pump having the outlet pipe connected to a variable buoyant float A pump mechanism adapted to float on a reservoir of liquid characterized by a floating enclosure provided with an internal chamber, an open cycling container, disposed within the chamber, an output pipe coupled to the cycling container and coupled to a sw... | 09/02/1997 |
| 5611671 | Pumping system for groundwater sampling A pump assembly for the accurate transfer of water to an above ground elevation includes a tubular housing having an upper extremity equipped with a gas inlet port, and a lower extremity equipped with a water inlet port having a first check valve. A secon... | 03/18/1997 |
| 5495890 | Float operated pneumatic pump A float operated, top fill, recovery unit floats in a body of contaminated groundwater to recover a layer of liquid hydrocarbons residing on top of the groundwater. The recovery unit has an upper end fitted with a discharge check valve assembly and a lowe... | 03/05/1996 |
| 5358038 | Float operated pneumatic pump A float operated, top fill, recovery unit floats in a body of contaminated groundwater to recover a layer of liquid hydrocarbons residing on top of the groundwater. The recovery unit has an upper end fitted with a discharge check valve assembly and a lowe... | 10/25/1994 |
| 5183391 | Valve pump To provide smoother operation of a gas-operated purge pump, the pump housing receives a standpipe closed by a low-density, floatable check valve element at the inlet of a standpipe within the housing. Periodically, at timed intervals, air is forced throug... | 02/02/1993 |
| 5161956 | Valve pump To provide smoother operation of a gas-operated purge pump, the pump housing receives a standpipe closed by a low-density, floatable check valve element at the inlet of a standpipe within the housing. Periodically, at timed intervals, air is forced throug... | 11/10/1992 |
| 5092743 | Pneumatically controlled pump A pump of extremely simple manufacture, requiring no maintenance, is made up of a tubular body (1) closed at each end by end pieces (10a and 10b), orifices (15a and 15b) of which are respectively connected to a pneumatic control circuit (4) and to the cir... | 03/03/1992 |
| 5080126 | Float controlled valve A float controlled valve has a float chamber for accumulating a fluid, a pivoting float arm having a float mounted on one end thereof for fluid level determined movement within the chamber, a pivotally mounted actuator arm coupled to the float arm by a ma... | 01/14/1992 |
| 5078579 | Side entry fish pump A wet pump for pumping fish from a first fish receptacle to a second receptacle displaced from the first receptacle. The wet pump includes a wet pump tank into which the fish are initially pumped, a pump suction line connected to the side of the tank and ... | 01/07/1992 |
| 5004405 | Pneumatically powered submersible fluids pump with integrated controls Apparatus for the pumping of fluids from a source without the need of external controls. The pump will continue to fill and empty itself as long as there is fluid filling the pump and compressed air of sufficient pressure to overcome the head against whic... | 04/02/1991 |
| 4964784 | Volumetric dosing apparatus A system for dispensing a liquid, which may be corrosive, in an amount which is substantially fixed for each cycle of operation includes an airtight measuring vessel with an inlet conduit through which liquid is introduced unidirectionally and an outlet o... | 10/23/1990 |
| 4926508 | Portable toilet with battery operated flush assembly A portable toilet having a battery operated flushing assembly that is powered by batteries carried in the toilet. The batteries provide for a "pulsed" flushing action of the flush water and this is achieved by the use of an axial flow pump which is operab... | 05/22/1990 |
| 4762201 | Dry sump scavenging system with independent head source A scavenging system (10 or 110) for hydraulic circulation installations. A pump (25) delivers the hydraulic fluid (19) which is thereafter collected in a sump (18 or 18A) that is to be maintained essentially dry. A reservoir (28), independent of the sump ... | 08/09/1988 |
| 4050854 | Fluid lifting apparatus A fluid lifting apparatus operable by air pressure applied alternately to first and second pairs of cylinders each of said cylinders having a main body part, a barrel and a bottom chamber in communications with a bottom inlet. Pressuring of the main body ... | 09/27/1977 |
