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| Number | Title | Issue Date |
| 7319466 | Method and apparatus for generating and interfacing with a haptic virtual reality environment A method for generating a haptic interactive representation including the steps of defining a haptic interaction space and building a hierarchical construct, for use within the haptic interaction space, using a plurality of underlying constructs. In one embodiment t... | 01/15/2008 |
| 7253803 | Force feedback interface device with sensor A force feedback mouse interface device connected to a host computer and providing realistic force feedback to a user. The mouse interface device includes a mouse object and a linkage coupled to the mouse that includes a plurality of members rotatably coupled to eac... | 08/07/2007 |
| 7222444 | Coordinated linkage system for a work vehicle A work vehicle with a tool pivotally attached to a linkage, an actuator for controllably moving the tool about its pivot, and a tilt angle sensor for sensing the absolute angle of the work tool relative to the earth. A controller is adapted to perform an auto-hold f... | 05/29/2007 |
| 7142967 | Features of main control computer for a power machine The present invention is directed to a computer based control system for controlling hydraulic and electromechanical actuators on a power machine, such as a skid steer loader. The computer based control system is configured to implement a number of features to enhan... | 11/28/2006 |
| 7106313 | Force feedback interface device with force functionality button A force feedback mouse interface device connected to a host computer and providing realistic force feedback to a user. The mouse interface device includes a mouse object and a linkage coupled to the mouse that includes a plurality of members rotatably coupled to eac... | 09/12/2006 |
| 7103499 | 3-D selection and manipulation with a multiple dimension haptic interface Systems and methods provide a user the ability to select three-dimensional virtual objects in a three-dimensional modeling environment using two-dimensional representations of the objects. In broad overview, the invention involves a multidimensional degree of freedo... | 09/05/2006 |
| 7024625 | Mouse device with tactile feedback applied to housing A computer mouse device for tracking user input and providing tactile feedback. A housing includes a lower portion designed to move over a flat surface, and a casing portion engaged by a palm of a user's hand. A sensor is provided within the housing for tracking the... | 04/04/2006 |
| 6958752 | Systems and methods for three-dimensional modeling Systems and methods for modifying a virtual object stored within a computer. The systems and methods allow virtual object modifications that are otherwise computationally inconvenient. The virtual object is represented as a volumetric representation. A portion of th... | 10/25/2005 |
| 6956558 | Rotary force feedback wheels for remote control devices A force feedback wheel is provided on a mouse or other interface device manipulated by a user. A sensor detects a position of the mouse in a workspace and sends a position signal to a connected host computer indicating that position. A rotatable wheel is mounted upo... | 10/18/2005 |
| 6946812 | Method and apparatus for providing force feedback using multiple grounded actuators An apparatus and method for interfacing the motion of a user-manipulable object with a computer system includes a user object physically contacted or grasped by a user. A 3-D spatial mechanism is coupled to the user object, such as a stylus or a medical instrument, ... | 09/20/2005 |
| 6903721 | Method and apparatus for compensating for position slip in interface devices Method and apparatus for compensating for position slip in interface devices that may occur between a manipulandum and a sensor of the device due to a mechanical transmission. A device position delta is determined from a sensed position of a manipulandum of an inter... | 06/07/2005 |
| 6508058 | Hydraulic control system with tactile force and position feedback An apparatus for translating the movements of a portion of an operators anatomy residing in communication with an input fitment into hydraulic signals thereby directing the motion of a machine member moved by a hydraulic driver with natural motion of the ... | 01/21/2003 |
| 6494039 | Force-controlled hydro-elastic actuator Provided is a force-controlled hydro-elastic actuator, including a hydraulic actuator, having a connection to hydraulic fluid and including a mechanical displacement member positioned to be mechanically displaced by fluid flow at the actuator. A valve is ... | 12/17/2002 |
| 6122848 | Hydraulic drive type working vehicle A hydraulic drive type working vehicle, with speedy responsiveness in an excavating operation, includes: a pouring changeover valve (10), which is switchable between (a) a pouring position, wherein pressurized oil of a travel hydraulic circuit (5) is pour... | 09/26/2000 |
| 5517899 | Hydraulic servosystem with externally controllable setting assembly A fluidic, in particular a hydraulic, servosystem has an input which can be actuated at will and an output which is elastically drivingly connected thereto, with a relative movement made possible by the elastic connection and dependent on the magnitude of... | 05/21/1996 |
| 5353593 | Bootstrap hydraulic systems The present invention is directed to a hydro-mechanical or electro-hydro-mechanical control system utilized for positioning a mechanical device. The control system incorporates a control valve for selectively controlling the flow of hydraulic fluid to inp... | 10/11/1994 |
| 5345764 | Control valve for bootstrap hydraulic systems The present invention is directed to a hydro-mechanical or electro-hydro-mechanical control system utilized for positioning a mechanical device. The control system incorporates an open-center control valve for selectively controlling the differential pres... | 09/13/1994 |
| 5127311 | Hydraulic system for a servo steering of a motor vehicle The hydraulic system for a servo steering of a motor vehicle, incorporates a main valve mechanism producing the assistance pressure (Pa) applied to a hydraulic assistance device (12) and including a pair of parallel fluid circuits between a source (14) of... | 07/07/1992 |
| 5035113 | Electropneumatic remote control for shifting the mechanical transmission of a motor vehicle A remote control shifting system for a mechanical transmission. The transmission is operated by two pneumatic cylinders, a selecting cylinder operating in the direction of shift path selection and a shifting cylinder acting in the direction of shifting. T... | 07/30/1991 |
| 4936094 | Torque-generating steering device with load-sensing capability A torque-generating steering device is provided for use with a pump (19) having a pressure compensator (23) for varying the output of the pump. The device includes a gerotor displacement means (43) which provides a relatively high-torque output to an outp... | 06/26/1990 |
| 4858714 | Hydrostatic steering device An improved hydrostatic steering mechanism is disclosed having a rotary valve with a radially displaced resilient feedback mechanism.... | 08/22/1989 |
| 4800721 | Force feedback lever A control lever is provided for effecting positional control of a work implement. An actuator means applies a force to the control lever in response to a sensed load being applied to the work implement. The force applied to the implement control lever is ... | 01/31/1989 |
| 4098491 | Methods and apparatus for the control of a suspended weight from a floating vessel This invention relates to apparatus for the control of a weight suspended from a vessel employing a pneumatic suspension system subject to heave action so as to maintain the pressure in the pneumatic system substantially constant during the heave of the v... | 07/04/1978 |
