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 |
| 7171822 | Air conditioning system with interior and exterior assemblies Vehicles are provided with a first air conditioning system adapted to condition at least air in the driver compartment and a second air conditioning system distinct from the first air conditioning system and adapted to operate independently of the first air conditio... | 02/06/2007 |
| 7150416 | Liquid fuel injection Liquid fuel injectors are provided. The liquid fuel injectors allow the injection of a fine spray of liquid fuel. The liquid fuel injectors utilize a schrader valve movable between an open position and a closed position. When the schrader valve is in the closed posi... | 12/19/2006 |
| 7077162 | Valving means for reducing hose line pressure during disconnect The relief valve assembly (10) includes a tube (24) having a circular threaded portion (30) adjacent a first end (28) that rotatbly receives an interconnection means. The tube other end has male threads (34) for connection to a wat... | 07/18/2006 |
| 7048005 | Throttle valve device for a pneumatic power tool A throttle valve device for a pneumatic power tool comprises a casing (10) with an air inlet passage (11), an air outlet passage (12), a valve chamber (13) with a main valve seat (14) and a main valve element (15), and a man... | 05/23/2006 |
| 6957667 | Multifunction tube joint A tube joint that can be used as a volume control valve, air sprayer or/and a T-tube. The multifunction tube joint mainly contains: an elongated body, a revolving valve, a stem, a branch, a piston valve rod, a button and a spring. The elongated body contains: a main... | 10/25/2005 |
| 6902011 | Variable torque impact wrench Disclosed herein is a fluid control system for varying the power available to a fluid powered tool, a hydraulically driven impact wrench. The system disclosed herein varies power available to the tool by use of a bypass mechanism that is downstream of a directional ... | 06/07/2005 |
| 6883541 | Manual-automatic water faucet A manual-automatic water faucet includes a shell installed inside with a water intake base, a water outlet valve, an electromagnetic valve, an induction device and a control device. The control device is composed of a valve rod, a spindle and a revolving button. The... | 04/26/2005 |
| 6802335 | Faucet handle retainer A faucet assembly includes a first handle attached to rotate a fluid control member and includes a first groove. A second handle is attached to move the fluid control member along a central axis and includes a second groove aligned with the first groove. A retainer ... | 10/12/2004 |
| 6269840 | Valve-in-valve body, vent port and method A valve in valve assembly. The assembly comprises a housing having an internal passage, a valve body in the housing and movably operable to control process fluid flow through the passage, and a chamber in the valve body. The chamber is open to the passage... | 08/07/2001 |
| 6223774 | Redundant regulation valve The redundant regulation valve for controlling fluid flow comprises a valve body defining a passage for the flow of the fluid, a main throttle element movable by means of a main control device to selectively obstruct the passage, and a redundant throttle ... | 05/01/2001 |
| 6223949 | Spinning valve The present invention includes a spinning valve having an inner valve portion and an outer valve portion, and having multiple inlets and multiple chambers at different heights along the longitudinal axis of the inner valve portion. The present invention a... | 05/01/2001 |
| 5730186 | Integrated solenoid valve/rotary joint A method and apparatus for heating a liquid, such as cooking oil for a fryer. A heat transfer fluid, such as an oil, is heated, such as by a gas-fired burner, at a location remote from the liquid to be heated, and passed by the liquid in a heat exchange r... | 03/24/1998 |
| 4984505 | Multiplexed hydraulic control systems A time division multiplexed (TDM) hydraulic control system having a plurality of channels, each channel having a servo actuator. Electrical demand signals are arranged in TDM sequence and applied to a single multiplexed pilot valve so that the pilot valve... | 01/15/1991 |
| 4913032 | Multiplexed hydraulic control systems A time division multiplexed (TDM) hydraulic control system having a plurality of channels, each channel having a servo actuator. Electrical demand signals are arranged in TDM sequence and applied to a pilot valve so that the pilot valve produces a plurali... | 04/03/1990 |
| 4807850 | Multi-viscosity metering valve A multi-viscosity fuel metering valve comprises a metering stem and a metering stem guide. The metering stem is rotatable relative to the metering stem guide. A port is located in the metering stem guide and a plurality of orifices, each having different ... | 02/28/1989 |
| 4665746 | Liquid level measuring apparatus and method There is disclosed an apparatus of the bubble type for accurately measuring the quantity of liquid in a tank. The apparatus functions by supplying an accurately measured quantity of purge gas at an accurately controlled predetermined pressure and flow rat... | 05/19/1987 |
| 4585208 | Valve, particularly a thermostatic valve for hot water radiators The invention relates to a thermostatic type valve for a hot water radiator. The valve has an adjustable insert for changing the throttle setting of the valve. An intermediate setting element has a spline connection with the insert to facilitate turning o... | 04/29/1986 |
| 4516607 | Faucet mixer A faucet mixer for mixing at least two fluids comprising a mixing chamber, at least two feed lines adapted to open into a mixing chamber and a cock shell adapted to block each of the pipes as a function of its position. The cock shell is arranged within t... | 05/14/1985 |
| 4510962 | Precise pressure regulator for a variable output pump A precise pressure regulator includes a housing defining a bore having pressure and relief zones, a pressure port communicating with the pressure zone, a relief port communicating with the relief zone, and a control port. A follower is slidable and a spoo... | 04/16/1985 |
| 4293003 | Mixture control device for service water installations having a low supply temperature The mixture control device is connected to a warm water installation having relatively low supply temperature and including an outlet conduit of the warm water, a parallel outlet conduit of the warm water connected in series with an electrical flow heater... | 10/06/1981 |
| 4199946 | Integrated control for brake and steering systems An integrated control mechanism for regulating the communication of pressurized fluid from a source to a brake system and a steering system of a vehicle in response to independent operator brake and steering signals. The integrated control mechanism has a... | 04/29/1980 |
| 4164239 | Hot and cold water ratio and volume manual device In a mixing valve assembly a rotatable control valve is provided for mixing in a desired ratio the fluid from two separate sources such as hot and cold water inlets. The valve porting is arranged such that full water pressure will be maintained as a resul... | 08/14/1979 |
| 4068829 | Head for mixing and discharging at least two ingredients A head for mixing and discharging at least two ingredients comprising distributor valves to mix the products, each valve having a stem associated with a lever pivoted to be controlled by a rod which cooperates with a cam ramp carried by a sliding member c... | 01/17/1978 |
| 4026396 | Control device for forward-reverse transmission gears Pressure fluid control for a transmission. There is provided a pressure fluid control device for a transmission, particularly applicable to use in fork lift trucks, wherein a suitable hydraulic selector receives pressure medium from a pressure creating de... | 05/31/1977 |
| 3981328 | Hand-operable takeout valve for a fluid pressurized container A hand-operable takeout valve for temporary attachment to a fluid pressurized container, including a hand-operable main valve and a check valve operable in response to a fluid pressure, wherein the check valve is additionally controllable by hand for co-w... | 09/21/1976 |
