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"That the automobile has practically reached the limit of its development is suggested by the fact that during the past year no improvements of a radical nature have been introduced."
Scientific American ; Jan. 2 edition, 1909
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| Number | Title | Issue Date |
| 7228869 | Pressure limiting valve What is disclosed is a a pressure limiting valve comprising a valve body, the axial movement of which is damped by means of a damping device. In accordance with the invention, the damping device includes a damping chamber formed on the return side, that is subjected... | 06/12/2007 |
| 7100732 | Positive traction hydraulic drive system A hydraulic drive system includes a pair of hydraulic drive motors connected in series. Each motor includes a hydraulic circuit with a spring-biased directional control valve and a pair of check valves. The circuits are located in the end cover for each motor, and a... | 09/05/2006 |
| 7097754 | Continuous electroforming process to form a strip for battery electrodes and a mandrel to be used in said electroforming process A continuous electroforming process to form a strip for battery electrodes, comprising the steps of providing a mandrel having on its surface a reusable pattern subdivided into conductive and non-conductive areas; moving said mandrel through an electroforming bath t... | 08/29/2006 |
| 7072743 | Semiconductor manufacturing gas flow divider system and method A system for dividing a single flow into two or more secondary flows of desired ratios, including an inlet adapted to receive the single flow, at least two secondary flow lines connected to the inlet, an input device adapted to receive at least one desired ratio of ... | 07/04/2006 |
| 7063100 | Flow regulator with pressure relief combination valve A flow regulator with pressure relief combination valve is disclosed which can include a housing and a valve assembly. The housing can have a chamber and four ports. A cage, having a plurality of cross holes, is supported by the housing. A hollow spool is slidably d... | 06/20/2006 |
| 7048157 | Metering machine A metering machine comprising a frame receiving a hopper, at least one duct opening out into the hopper in the vicinity of a bottom thereof and receiving firstly a portion of a transfer screw extending at the bottom of the hopper, and at least one metering cylinder ... | 05/23/2006 |
| 6994102 | Pressure regulating valve A pressure regulating valve which is comprised of a valve body being comprised of a cylinder, a spool slidably disposed in the cylinder with a clearance, the spool and the cylinder defining a pressure chamber and a space portion, and an urging member which urges the... | 02/07/2006 |
| 6966302 | Fuel system and flow control valve A valve for controlling flow of a fluid includes a valve body defining at least in part an inlet, an outlet, at least one chamber, and an orifice in communication with the chamber. A valve member is received at least in part in one chamber for reciprocation or rotat... | 11/22/2005 |
| 6857441 | Fluid metering device A fluid metering device that preferably includes a substantially linear series of intermeshing gears. The fluid metering device includes an inlet port adjacent the intermeshing portion of each pair of gears within the series adjacent the point at which the pair of g... | 02/22/2005 |
| 6662817 | Gas-line system for semiconductor-manufacturing apparatus A gas-line system used for a semiconductor-manufacturing apparatus with at least two reactors, includes at least one gas source; a flow-divider means including an input port on the primary side, which receives a source gas from the gas source, and an outp... | 12/16/2003 |
| 6651688 | Divider-combiner valve A divider combiner valve using only one spool without any springs. The correct holes open and close by ball and seat type check valves although these could be a poppet or disk as well and these valves may be located in the valve body, the spool, or both. ... | 11/25/2003 |
| 6591850 | Method and apparatus for fluid flow control The invention provides a method and apparatus to control fluids such as process gases into two or more substrate process chambers. In one aspect, the gas flow from a first supply to a first processing region is used to control the gas flow of a second sup... | 07/15/2003 |
| 6345959 | Pump with integral pilot operated priority pressure regulating valve A fluid pump has a housing (4), a main output port (10), an auxiliary output port (14) and a priority pressure regulating valve contained with the housing (4). The priority pressure regulating valve has a spool (20) to direct fluid to one or both of the o... | 02/12/2002 |
| 6289917 | Proportional flow divider valve A proportional flow divider valve is configured only as a controlled flow valve by using a first spool in a valve body or as both a free flow valve as well as control flow valve by using a second spool in the valve body. The second spool is provided with ... | 09/18/2001 |
| 6164310 | Priority type flow dividing valve A priority type dividing valve includes a housing, a spool slidably situated inside the housing and having a damper orifice, and a damper chamber formed between the spool and the housing for providing a resistance to the movement of the spool. The damper ... | 12/26/2000 |
| 5472009 | Fluid regulator A fluid regulator has two valve bodies (24, 25) placed opposite and cooperating with two openings (22, 23) for controlling the fluid flow from an inlet chamber to two outlet chambers. A spindle (34) interconnects the valve bodies (24, 25) at a predetermin... | 12/05/1995 |
| 5411050 | Capacity fuse valve An improved valve of the class referred to as capacity fuse valves which closes in response to passage of a total fluid flow volume through the valve to the valve outlet. The incoming fluid entering the valve inlet is split into a main flow that passes th... | 05/02/1995 |
| 5377717 | Hydraulic flow control valve assemblies A hydraulic flow control valve assembly comprises an inlet port for input fluid flow from a pump, a first outlet port for output fluid flow to a power steering unit, a second-outlet port for output fluid flow to an accumulator of a braking system, and an ... | 01/03/1995 |
| 5293952 | Hydraulic fluid supply system for an installation in a motor vehicle having power assisted steering with a pressure regulation value connected to the main and secondary circuits The steering of a motor vehicle is assisted by a power steering means including a hydraulic distributor which is supplied with pressurized fluid by a pump from a reservoir. The vehicle also has a clutch having hydraulic servo assistance supplied by a serv... | 03/15/1994 |
| 5285641 | Flow dividing pump A compact and light flow dividing pump is disclosed. The pump includes a housing having an end plate attached to one end thereof. The end plate has a fluid suction port and a pair of fluid discharge ports. A pump mechanism is provided in the housing for r... | 02/15/1994 |
| 5255700 | Capacity fuse valve An improved valve of the class referred to as capacity fuse valves which closes in response to passage of a total fluid flow volume through the valve to the valve outlet. The incoming fluid entering the valve inlet is split into a main flow that passes th... | 10/26/1993 |
| 5165233 | Charge pressure priority valve A charge pressure priority valve for supplying a flow of sufficient pressure to energize an auxiliary implement while supplying a nearly constant pressure flow to a hydrostatic fluid circuit includes a valve body having an interior bore with a pump inlet ... | 11/24/1992 |
| 4924900 | Adjustable ratio mixing valve An adjustable ratio mixing valve is disclosed which incorporates an automatic pressure compensating arrangement whereby the fluid pressure immediately upstream of each of the metering orifices is maintained in substantial equilibrium. This arrangement the... | 05/15/1990 |
| 4917138 | Priority flow control valve for hydraulic power circuits A priority flow control valve for power circuits in hydraulic equipment, which is conventional in basic design, but makes use of an additional piston to impinge on the movable seat of a bias spring housed in a cylindrical chamber that connects with the co... | 04/17/1990 |
| 4877057 | Pressure equalizing valve A pressure equalizing valve comprises a valve body with a longitudinally disposed bore therein, and a spool disposed in the bore for longitudinal movement to regulate fluid communication from an inlet port to outlet ports in response to a pressure differe... | 10/31/1989 |
| 4858515 | Priority valve for hydraulic installations The invention relates to a priority valve for a hydraulic installation having a main circuit and an auxiliary circuit. The priority valve has a slide member which primarily has a controlled throttle for dividing the supply fluid between the main and auxil... | 08/22/1989 |
| 4807657 | Automatic fluid flow regulator An automatic fluid flow regulator particularly adapted to maintain equilibrium within a cryogenic fluid system. The regulator includes a housing that has an input port and first and second output ports. A housing of the regulator contains a spool body hav... | 02/28/1989 |
| 4756330 | Flow divider valve In a flow divider valve for pressure feed to a hydraulic circuit for auxiliary power steering and to a hydraulic circuit for a power take-off the interior of a hollow regulator piston receives pressure feed for distribution to the hydraulic circuits. For ... | 07/12/1988 |
| 4738330 | Hydraulic drive system for use with vehicle power steering pump A hydraulic drive system for use with a vehicle power steering pump has a hydraulic motor connected in series with a power steering mechanism and a bypass line extending in bypassing relationship with the motor. A bypass valve is disposed in the bypass li... | 04/19/1988 |
| 4691730 | Constant percentage flow divider A flow control device (12) for supplying first and second fluid distribution systems (16 and 18) with a constant percentage of fluid flowing from a single source of fluid (14). A housing (20) has a first bore (28) and a second bore (52) with a semi-cylind... | 09/08/1987 |
| 4665939 | Priority control for hydraulic consumers In a priority control device the supply flow to the lower-ranking consumer is set by a flow control valve (pressure balance) whose control chamber subjected to the control pressure of the lower-ranking consumer can be relieved of pressure via a proportion... | 05/19/1987 |
| 4658850 | Flow control valve with switching valve A flow control valve comprises an orifice which is formed in a supply passage of hydraulic fluid, and a spool valve for feeding part of hydraulic fluid supplied through the supply passage to a branch passage in response to a pressure differential across t... | 04/21/1987 |
| 4655250 | Open center unloading valve An unloading valve utilized in an open center hydraulic system in conjunction with a conventional open center control valve having an open center passage and a dead end power passage; the unloading valve is supplied by a system pressure from a pump and di... | 04/07/1987 |
| 4625747 | Pressure responsive flow divider valve for servo-powered steering devices A pressure responsive flow divider valve for servo-powered steering devices comprises a flow control valve having three ports to divide the fluid flow delivered by a pump between a pair of partial volumes, one flowing to the steering valve and the other f... | 12/02/1986 |
| 4625748 | Safety arrangement for power assisted steerings In the supply of a power-assisted steering and an additional hydraulic system with fluid the power-assisted steering has priority so that when the steering is actuated the influx of fluid to the hydraulic system is correspondingly throttled by a priority ... | 12/02/1986 |
| 4622992 | Reaction control valve Forms of a reaction control valve are disclosed utilizing various control signals with linear and rotary displacement structures to balance flow reaction forces and attain desired signal-responsive positioning. Different flow passage configurations attain... | 11/18/1986 |
| 4616671 | Valve with flow force compensator A valve that directs flow from an inlet to at least two outlets, and which counterbalances flow induced forces that tend to restrict flow to one of its outlets. The valve has a valve chamber formed in a housing, and the inlet communicates fluid to the val... | 10/14/1986 |
| 4579044 | Two-speed shift valve A two-speed, pilot-operated selector valve which directs hydraulic fluid to two motor elements with a common output shaft to obtain a high-torque, low-speed mode, or to one motor element, while recirculating the second element in a loop, to obtain a low-t... | 04/01/1986 |
| 4566477 | Fluid flow control apparatus An apparatus for controlling fluid flow to a steering motor and an auxiliary apparatus is capable of smoothly changing between conditions in which it directs relatively small and relatively large flows of fluid to the auxiliary apparatus. The apparatus in... | 01/28/1986 |
| 4564039 | Hydraulic differential locking device with adjustable sensitivity A hydraulic differential locking device according the invention has a changeable range of sensitivity, the regulating slide valve being able to move even in the relieving connected position of the differential locking device, and is provided with springs ... | 01/14/1986 |
