Did You Know...
...that the Slinky toy was the result of a failed attempt by engineer Richard James to produce an antivibration device for ship instruments? His goal was to develop a spring that would instantaneously counterbalance the wave motion that rocks a ship at sea. Instead, he developed the Slinky.
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| Number | Title | Issue Date |
| 4271867 | Method and apparatus for hydraulically controlling subsea well equipment Method and apparatus for hydraulically controlling subsea well equipment, such as valve operators, connectors, and other hydraulically actuated devices, with a significantly reduced number of hydraulic pressure source lines from the surface to the subsea ... | 06/09/1981 |
| 4272265 | Apparatus for pressure swing generation of oxygen Apparatus for generating oxygen by the pressure swing method includes a plurality of grouped vessels each having a molecular sieve bed, a first port of each vessel providing oxygen-enriched effluent from the bed and a second port permitting alternate pres... | 06/09/1981 |
| 4258752 | Control valve with two rotary valve elements supported in a housing and acted upon axially by pressure The axial thrusts applied to two rotatable slide valve elements of a steering control valve assembly, are transmitted independently of each other through radially overlapping, anti-friction bearings to a common axial thrust absorbing surface. A thrust tra... | 03/31/1981 |
| 4240331 | Power steering apparatus for vehicle A power steering apparatus for a vehicle comprising a valve housing provided with a rotary type valve body rotatable in one direction or another by a turning operation of a steering shaft. An oil supply port is connected to an oil pressure pump that is se... | 12/23/1980 |
| 4232708 | Fluid controller A controller for controlling fluid flow from a source to a motor, such as the steering motor of a motor vehicle. The controller includes a metering section and a control valve section comprising a stacked assembly of plate valve members which control flow... | 11/11/1980 |
| 4220072 | Power steering apparatus A power steering apparatus comprises a main valve member rotating in response to the action of a fluid pressure motor supplementing manual steering torque and a flap valve member rotating in response to the manual steering torque and mounted within the ma... | 09/02/1980 |
| 4217932 | Hydraulic rotary distributor, particularly for use in power steering mechanisms A hydraulic rotary distributor comprising two rotary members respectively connected to an input shaft and to an output shaft, said members controlling through their relative angular position the supply of pressurized fluid to a hydraulic power-assistance ... | 08/19/1980 |
| 4198194 | Rotary piston machine with wear surface on rotary valve member A rotary piston machine including an interface fluid valve mechanism comprising a flat blank surface, a rotary valve member, and a stationary valve member having a stationary valve face disposed substantially parallel to said flat blank surface and being ... | 04/15/1980 |
| 4182383 | Fluidized bed powder discharge and metering method and apparatus A metering method and apparatus is provided for the controlled discharge of powder from a fluidized-bed blender to a material container, which gives accurate material weights while separating powder from fluidizing gas. In this method the material contain... | 01/08/1980 |
| 4112973 | Control arrangement for a hydrostatic axial or radial piston machine Control arrangement for a reversible hydrostatic axial or radial piston machine comprises a fluid guiding outer annular space surrounding a control body consisting of an eccentric disk connected to the shaft of the machine for rotation therewith and an in... | 09/12/1978 |
| 4108290 | Hydraulic torque converter lock-up clutch A controlled lock-up clutch interposed between the impeller and turbine in a torque converter of an automatic transmission for an automotive vehicle where the clutch lock-up and unlock is controlled at a torque converter speed ratio design point by the st... | 08/22/1978 |
| 4070856 | Air flow control system and improved multiple position switching means for use therewith Air flow control system comprising a pump having an air pressure outlet and a vacuum outlet; an air utilization device such as a desolderer; and a multi-position switch having first and second input ports respectively connected to the air pressure and vac... | 01/31/1978 |
| 4057373 | Multi-cylinder pump for concrete In a multi-cylinder pump for conveying concrete, the flow of concrete to and from the cylinders is controlled by a pivot body containing a pressure channel. The pressure channel is bounded by blades, each of which has a blade plate shaped in accordance wi... | 11/08/1977 |
| 4056041 | Control system for axial piston fluid energy translating device A variable displacement axial piston pump has a rocker cam for controlling the output of the pump. The rocker cam is driven by a fluid motor member. A valve with a follow-up device regulates pressure fluid flow to the fluid motor member to move the rocker... | 11/01/1977 |
| 4055151 | Waste heat boiler The invention is a valve especially a divertor valve for diverting hot gas to a boiler or to a duct by-passing the boiler and for controlling the amount of gas flowing through the boiler. The valve enables changeover from one flow path to another by rotar... | 10/25/1977 |
| 4049019 | Rotary valve A rotary valve having a valve body with a rotatable valve member in the form of a port plate rotatably positioned therein for causing free flow from pump to reservoir in a neutral position and having other operative positions for directing fluid to and fr... | 09/20/1977 |
| 4041837 | Induction and exhaust apparatus for piston machines The four strokes of a piston in an internal combustion engine are sequentially controlled by two rotary valves, each including a housing and a triangularly shaped rotor mounted in the housing for epitrochoidal movement. The rotor defines three chambers in... | 08/16/1977 |
| 4033880 | Filter device A filter device, particularly a dry filter device for refrigerant in cooling systems, comprises an inlet- and outlet-equipped housing having a chamber containing the filter, which chamber has a sealable aperture for allowing replacement of the filter in t... | 07/05/1977 |
| 4016940 | Pneumatic nut runner having a directional valve and an air regulator A nut running pneumatically powered tool, such as an impact wrench, having in a handle portion a group of valves including a throttle valve for admitting air to the tool, a manually adjustable directional valve for selectively directing the air to either ... | 04/12/1977 |
| 4015859 | Vehicle leveling system A vehicle leveling system adapted for varying the attitude between the sprung and unsprung portions of an automotive vehicle, the system including a pair of leveling struts interposed between the vehicle portions and operable in response to an increase in... | 04/05/1977 |
| 3995427 | Multiple-phase combustion engine embodying hydraulic drive A power system is disclosed for use as an automotive drive engine, utilizing combustible fuel and hydraulic drive. A multiple-phase engine, incorporating three piston units, burns fuel to provide alternating-pressure tri-phasic hydraulic energy in three l... | 12/07/1976 |
| 3965801 | Straight line abrading tool A portable abrading tool having a cylinder body containing a double ended piston with a reduced dimension intermediate portion of the piston carrying two oppositely facing racks engageable with two gear units which in turn engage two additional oppositely... | 06/29/1976 |
| 3954047 | Transmission coupling apparatus A hydraulic or pneumatic coupling including a hydraulic or pneumatic pump and a hydraulic or pneumatic motor driven by the pump through a coupling has two pairs of adjacent chambers divided and connected by a rotatable valve element which allows the varyi... | 05/04/1976 |
| 3948286 | Rotary valve for an oxygen generator A breathing system control valve having a housing with a distribution chamber therein which communicates with a source of air under pressure. A shaft which extends into the distribution chamber engages a plurality of discs and is operatively connected to ... | 04/06/1976 |
| 3940949 | Hydraulic, automatically adjustable timing device for fuel injection A hydraulic, automatically adjustable timing device for fuel injection wherein vanes of rotor and radial members of casing form operating chambers, each having a passage to permit fluid in and out; a pilot valve is disposed in the drive shaft, is rotatabl... | 03/02/1976 |
| 3930520 | Control valve A control valve controls fluid to and from a motor or the like from a rotary shaft and it includes a pair of stationary valve members facing each other and having facing annular channels therein. The annular channel of one of said stationary valve members... | 01/06/1976 |
