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| Number | Title | Issue Date |
| 6331704 | Hydraulic fluid contamination monitor The presence of particulate debris flowing in a hydraulic fluid flow system includes a source of infra-red light passing through a window of the fluid flow line while fluid is flowing therethrough. A portion of the light is directed to a monitoring photod... | 12/18/2001 |
| 5984503 | Method and apparatus for entering and displaying structure information in a machining system A method and apparatus for displaying and entering information associated with structures in a machining system, wherein each structure is associated with at least one setup in the machining system, and can be, for example, a pallet, fixture, or workface.... | 11/16/1999 |
| 5918635 | Low pressure solenoid valve A solenoid valve utilizes a single unitary member as a combined core/spool which is axially moveable between an extended deactivated position to a retracted activated position upon actuation of its coil. The valve includes a coil in which the windings on ... | 07/06/1999 |
| 5918760 | Hydraulic fluid reservoir The invention relates to a hydraulic fluid reservoir comprising a substantially cylindrical wall (1), an upper wall (2) and a lower wall, and two tubular connection pieces (4, 5) for entering and discharging hydraulic fluid into and out from the interior ... | 07/06/1999 |
| 5910199 | Method and apparatus for fast threading pullout in a numerically controlled threading application A method and apparatus for fast threading pullout in a numerically controlled threading application which includes position determining logic for receiving position command signals from a numerical control and determining the commanded movement of a threa... | 06/08/1999 |
| 5894862 | Hydraulic damper A hydraulic damper is disclosed for reducing undesirable pressure differentials in a hydraulic system. The damper comprises a body assembly, including first and second inlet ports for connecting the damper to a hydraulic system. A pair of lap assemblies a... | 04/20/1999 |
| 5878766 | Pressure compensated flow control valve A fluid flow control valve and method for operating which maintains the rate of flow of fluid therethrough at a substantially constant rate regardless of variations in pressure of the fluid flowing therethrough.... | 03/09/1999 |
| 5785100 | Liquid level detection system A liquid retention system is disclosed which includes a tank for receiving and retaining a liquid, and including a filling port. A dispenser supplies liquid to the tank through a nozzle which engages the filling port. A pneumatic detection system is provi... | 07/28/1998 |
| 5782160 | Adjustable stop for variable displacement pumps A hydraulic pump is disclosed having an adjusting member for varying yoke angle. The present adjusting member includes a control piston for displacing the yoke so as to define a desired yoke angle. A stop member is provided having threads and retained wit... | 07/21/1998 |
| 5778932 | Electrohydraulic proportional pressure reducing-relieving valve A hydraulic valve is disclosed including a valve body, a pressure inlet port, a return port, and a regulated pressure port. A cavity is formed in the valve body, in fluid communication with the various ports. The cavity comprises a first chamber having a ... | 07/14/1998 |
| 5751082 | High starting torque induction motor A high starting torque induction motor with simultaneously reduced starting current adapted to be associated with a drive having a high load torque on starting that includes a stator, a rotor, a first end ring fixed on said rotor, a second movable end rin... | 05/12/1998 |
| 5630352 | Variable displacement hydrualic piston machine saddle bearing A variable displacement hydraulic piston machine that includes a shaft mounted for rotation within a housing, a plurality of pistons in a cylinder block coupled to the shaft, a yoke engaged by the pistons for controlling displacement of the pistons in the... | 05/20/1997 |
| 5568858 | Power drive unit for aircraft cargo handling systems A power drive unit for aircraft cargo handling systems that includes an electric motor and a drive roller mounted on for rotation about an axis parallel to the motor output shaft for engagement with cargo to be driven by the unit. A planetary gear differe... | 10/29/1996 |
| 5485869 | Hydraulic dual solenoid directional control valve with manual override lock-out linkage In accordance with the invention, the hydraulic dual solenoid directional control valve embodying the invention includes means at each end of the hydraulic dual solenoid directional control valve which includes a hinge fixed to the coil at each end, a lev... | 01/23/1996 |
| 5438420 | Monitoring of fluid contamination level wherein the light energy is focused on the fluid passage means Apparatus for monitoring fluid contaminant level that includes a light source positioned on one side of a fluid sample path for directing light energy into fluid flowing in the sample path, a photosensor positioned on the same side of the sample path, and... | 08/01/1995 |
| 5388448 | Conductive particle detector An electrically conductive particle detector that includes a hollow spool or sleeve of insulating material having an open end, a sidewall and a circumferential array of elongated fluid passages that extend radially through the sidewall. A pair of internes... | 02/14/1995 |
| 5363738 | Portable electrohydraulic trainer Apparatus for training an operator in use of electrohydraulics that includes an electric-motor/hydraulic-pump with an integrated fluid sump mounted on a portable support. An electrohydraulic valve on the support is preconnected to the pump, and has at lea... | 11/15/1994 |
| 5354203 | Portable hydraulics trainer Apparatus for training an operator in use of hydraulic and electrohydraulic fluid power systems that includes a vertical panel upstanding from a wheeled base. A first plurality of electrohydraulic devices are mounted on one side of the panel, and second p... | 10/11/1994 |
| 5354182 | Unitary electric-motor/hydraulic-pump assembly with noise reduction features An electric-motor/hydraulic-pump assembly in which an electric motor has a motor housing and a motor drive shaft, and a hydraulic pump is mounted directly to one end of the motor housing and internally coupled to the shaft to form a unitary assembly in wh... | 10/11/1994 |
| 4961055 | Linear capacitance displacement transducer A linear capacitance displacement transducer for measuring absolute displacement is formed from a coaxial variable capacitor and a precision capacitance measuring electronic circuit. The plates of the coaxial capacitor are attached to the members of an as... | 10/02/1990 |
