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Six-year-old Robert W. Patch granted a patent for a "toy truck".
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| Number | Title | Issue Date |
| 8100669 | Micro-pump and micro-pump system A micro-pump for atomizing and including a main-housing, a nozzle plate, at least an actuator, and a liquid transport pipe is provided. The main-housing has a liquid inlet, a liquid outlet, an air inlet, and a micro-droplet outlet. The nozzle plate is assembled to t... | 01/24/2012 |
| 6976497 | Pressure-differential liquid raising system Liquid raising systems raise liquid from a system inlet to a system outlet without any moving parts below the system outlet. One or more closed cells are disposed at elevations between the system inlet and outlet. A liquid conduit leads from the bottom of each cell ... | 12/20/2005 |
| 6558128 | Fluid well pumping system A fluid pumping system includes a number of stages. Each stage has a fluid chamber having a top end with an air aperture and a bottom end with a fluid apertures. An air line is connected to the air aperture, and a fluid input conduit, with an input check ... | 05/06/2003 |
| 6536521 | Multi-stage liquid elevator A multi-stage liquid elevator which is assembled from individual stages is a fabricated from ordinary pipe components and has no moving parts. Each elevator stage consists of a reservoir defined by a casing enclosing an inlet pipe and an outlet pipe. A co... | 03/25/2003 |
| 6193471 | Pneumatic control of formation and transport of small volume liquid samples A process and system are provided for forming and transporting precise small volumes of liquid samples by means of controlled gas pressures. As the controlled gas pressures are changed at a multiplicity of control points in the fluid circuit, transitions ... | 02/27/2001 |
| 6186745 | Gas pressurized liquid pump with intermediate chamber The multi-chamber liquid pump of the present invention includes an input chamber, an intermediate chamber and a liquid output chamber. Pressurized gas provides the motive force for outputting liquid from the pump, such that liquid is output at a constant ... | 02/13/2001 |
| 5511954 | Water pumping system using solar energy A water pumping system includes a solar collector assembly having a plurality of solar collectors containing a heat transfer medium therein. A circulating tube is mounted in an insulated housing and communicates with the solar collectors for conveying the... | 04/30/1996 |
| 5169781 | Continuous perfusion apparatus utilizing aeration An apparatus for the continuous perfusion of a liquid in cell culture, hydroponic and breeding processes includes a container having a sealed lower portion and an open upper portion, a hollow tube having an upper end in the open upper portion and a lower ... | 12/08/1992 |
| 4801246 | Device for elevating liquids with a plurality of intermediate containers communicating with one another In a device for elevating liquids a heat exchanging vessel to be neated by an exterior source of heat is connected with a discharge pipe arranged to elevate doses of liquid, so that for performing a thermodynamic cycle the liquid to be elevated is used as... | 01/31/1989 |
| 4700783 | Method and apparatus for recovering liquids from a well bore A well bore is provided with novel and improved apparatus for practice of an improved method for recovery of liquids from the well wherein a quantity of liquid is elevated by repeated discrete steps upwardly through the well bore under the impetus of gas ... | 10/20/1987 |
| 4645427 | Metering pump assembly An air lift pump delivers liquid from a sump to an elevated tundish. The tundish is divided by weirs into a plurality of compartments in cascade. Surplus liquid overflows from the upper compartments back to the sump to produce a constant depth in the lowe... | 02/24/1987 |
| 4527956 | Pipe for elevating liquid, and device provided therewith A pipe for elevating a liquid by liquid portions separated by gas gaps has a plurality of passages each having an inner diameter selected so as to form a stable meniscus film at the borders between the liquid portions and the gas portions and each having ... | 07/09/1985 |
| 4432700 | Milk pumping system for vacuum milking installations A milk pumping system used in vacuum milking installations for the purpose of withdrawing the milk that is in a vacuum milk receiver that is under constant vacuum, in cases wherein the milk must be pumped to a higher and more remote bulk tank that is unde... | 02/21/1984 |
| 4380419 | Energy collection and storage system A system for the collection and storage of energy, wherein compressed air from any source is utilized to make a fully automatic, sequential series of chamber-to-chamber blow-type vertical water lifts to an elevated water storage reservoir. Potential energ... | 04/19/1983 |
| 4305700 | Air lift pump for wells, and means of controlling same by the fluid level in the well casing A well pump for use in oil wells, and the like, consisting of a series of cylinders connected by a production tubing and an air circulation system having two conduits extending into the casing-tubing annulus, each cylinder having an inlet connection throu... | 12/15/1981 |
| 4231712 | Sea water lifting device A device for transmitting sea water from a lower level to a higher level by means of sea surge striking the intake pipe to generate air pressure in a sealed chamber and to cause the water therein to be transmitted upwards into the next higher sealed chamb... | 11/04/1980 |
| 4094616 | Steam-heater-pump A device using only steam to simultaneously heat and pump a liquid or a slurry to a high pressure is disclosed, which device does not employ any rotating or reciprocating mechanisms commonly employed in the conventional pumping machinery. The combined use... | 06/13/1978 |
| 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 |
