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Fjerstad
Erik A. Fjerstad, Tucson, AZ US
| Patent application number | Description | Published |
|---|---|---|
| 20090126523 | SYSTEM AND METHOD FOR DEPLOYMENT AND ACTUATION - A mechanical deployment and actuation system may comprise a rotation module, a pinion module, a rack module, and a bevel module. The rotation module may be configured to couple to a housing and rotate about the principal axis of the rotation module relative to the housing. The pinion module may be configured to couple to the rotation module and selectively rotate about the principal axis of the pinion module relative to the rotation module. The rack module may be configured to dynamically couple to the pinion module and translate along the principal axis of the rack module in response to rotation of the pinion module. The bevel module may be configured to couple to the rotation module and selectively rotate the rotation module, wherein rotation of the rotation module rotates about the principal axis of the rotation module, the rack module, and the pinion module. | 05-21-2009 |
| 20110000361 | Methods and Apparatus for Integrated Locked Thruster Mechanism - A component separation system for separating a load from an external structure according to various aspects of the present invention comprises a sleeve slidingly engaged with the external structure. The sleeve includes an opening and an interior. A locking mechanism, such as a ball or latch, is movably disposed through the sleeve opening between a locked position engaging the external structure and an unlocked position not engaging the external structure. A mover slidingly disposed within the hollow interior of the sleeve controls the movement of the locking mechanism through the opening. Energy excess beyond that required for unlocking the mechanism may provide a thrust to forcibly eject the load from the external structure. | 01-06-2011 |
Wayne Fjerstad, Rochester, MN US
| Patent application number | Description | Published |
|---|---|---|
| 20100226094 | GRAVITY ASSISTED DIRECTED LIQUID COOLING - Dielectric liquid is used to cool heat generating electronic components disposed on a circuit board within a case. The liquid is poured or otherwise directed over the electronic components, with gravity assisting the liquid in flowing downward over the components, with the liquid thereafter being collected in a sump for eventual return back to the electronic components. One exemplary application of the described concepts is in cooling electronic components in computers, for example personal computers or server computers. | 09-09-2010 |
Wayne H. Fjerstad, Rochester, MN US
| Patent application number | Description | Published |
|---|---|---|
| 20080281144 | Skin Pressure Reduction to Prevent Decubitus Ulcers by Partial Magnetic Levitation - A magnetic levitation system for immobile patients in a wheelchair is disclosed. A magnet multi-pole configuration that is mechanically stable is provided that lifts the body and/or load shifts (rotates the body from side to side) the body. Based on a multi-pole configuration of permanent magnets in the pelvis, a corresponding multi-pole configuration for magnet repulsion is placed below the patient, typically as part of the wheelchair. Alternatively, a unipolar repulsion with mechanical patient restraint is implemented to achieve body lift or levitation. Either permanent magnets or electromagnets, optionally with magnetic sensor-mediated active computerized feedback control below the body, are sufficient to implement a complete multi-pole repulsive configuration that is mechanically stable. The apparatus reduces compressive force on soft tissues disposed between a human pelvis and a wheelchair seat. | 11-13-2008 |
| 20090072846 | HIGH FREQUENCY DIFFERENTIAL TEST PROBE FOR AUTOMATED PRINTED WIRING BOARD TEST SYSTEMS - A differential test probe for a printed wiring board test system includes a probe body having a proximal end and a distal end. Each of a plurality of coaxial cables extending from the proximal end to the distal end. The plurality of coaxial cables each includes a center conductor having an axial aperture at the distal end. The differential test probe also includes a plurality of signal pins that are each mounted in the axial aperture of the center conductor of one of the plurality of coaxial cables to electrically couple the signal pin to the center conductor. A plurality of ground pins are coupled to the probe body and selectively arranged relative to the plurality of signal pins to provide multiple signal to ground paths between the plurality signal pins and the plurality ground pins. | 03-19-2009 |