Did You Know...
...that power steering was invented by independent inventor Francis W. Davis? As chief engineer in the 1920s of the truck division of the Pierce Arrow Motor Car Company, he saw how hard it was to steer heavy vehicles. So that he would be able to keep the profits from his future invention, Davis left his job, rented a small engineering shop in Waltham, Mass., and developed a hydraulic power steering system that led to power steering.
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| Number | Title | Issue Date |
| 7125003 | Liquid treatment injector A reagent injector and/or aerator for aqueous fluids can use a variety of different removable end caps to adapt a venturi to different types of water treatment systems. The invention is adjustable because the end caps can be removed and springs that activate poppet ... | 10/24/2006 |
| 6899116 | Pressure vessel systems and methods for dispensing liquid chemical compositions Apparatus and processes are presented to contact a dry, preferably high purity inert gas with a chemical composition in a pressure vessel, or a wetting composition, to form a wet inert gas, which is then used to pressurize the chemical composition out of the pressur... | 05/31/2005 |
| 6217770 | Apparatus and method for treatment of water A water treatment process using a membrane separation apparatus to separate clean product water from a contaminated water source, the membrane is provided within a housing having inlet ports for collecting concentrated and product water, and the apparatus... | 04/17/2001 |
| 6047721 | Air introduction device for a hydro-pneumatic reservoir Device 7 for introducing air into a hydraulic system comprising a hydro-pneumatic reservoir 3 mounted on a pipe 1. The air introduction device 7 is mounted in such fashion as to introduce air into an area of the system containing water in which the pressu... | 04/11/2000 |
| 5988196 | Cyclically-operated hydraulic device particularly useful as a liquid pulsators, and method of operating same A cyclically-operated hydraulic device includes: an air-liquid chamber which, during a first part of each cycle is partially filled with a liquid while air in the chamber is compressed, and during a second part of each cycle discharges under pressure a po... | 11/23/1999 |
| 5240043 | Water system A system for the delivery and storage of bulk quantities of high quality water. The system includes a tank truck having air filters to preclude the entry of noxious materials into the bulk water hauling tanks. A delivery valve and a receiving valve are pr... | 08/31/1993 |
| 4545801 | Raw material supply device A device is disclosed for supplying a glass raw material gas in the form of the mixed gas consisting of the glass raw material gas and the carrier gas to a vapor deposition device for producing a preform of an optical fiber, the supply device including a ... | 10/08/1985 |
| 4103686 | Dual valve assembly A dual valve assembly for intravenous infusions from multiple parenteral fluid sources, the assembly controlling both forward and reverse flow through a flow line includes normally seated first and second valves mounted for movement toward and away from r... | 08/01/1978 |
| 4025234 | Apparatus for obtaining artificial gravity in liquids Apparatus for supplying liquid at a constant but regulable pressure comprising a storage vessel having an inlet and an outlet, the outlet being adapted for connection to a utilization device which is to be fed with liquid at constant pressure. An inlet co... | 05/24/1977 |
| 4002184 | Water flow actuated air charging device An air charging device is connected to a supply tank, a pump and a use facility, such as a faucet. When the faucet is opened, water flow from the tank through the device to the faucet charges a chamber in the device with air; while when the pump is actuat... | 01/11/1977 |
| 3981319 | Cycling air volume control In an air pressurized hydraulic system, air is replenished in a storage tank for the liquid by an air control responsive to pressure differences in the system to supply air to the storage vessel if needed. During replenishment of liquid in the storage ves... | 09/21/1976 |
