Patents
2014
Device and methods for para-hydrogen induced polarization. WO 2014039907 A1
Shawn Wagner, Jose Agraz, Debiao Li
The invention teaches devices and methods for hyperpolarization by parahydrogen induced polarization. The invention teaches several significant improvements over previous designs, including a heating block, an enhanced solenoid component, and pinch valves and tubing that provide a sterile environment for the sample. All of these advancements can be accomplished while keeping costs to produce the device relatively low.
PHIP Polarizer
Piezoelectric ultrasonic motor for 2-dimensional positioning. US 7501743 B2
Kenji Uchino, Clive A. Randall, Jose Agraz,Richard Eitel, Seung-Ho Park
A piezoelectric ultrasonic motor having 2-dimensional positioning movement includes a stator. The stator includes a piezoelectric ceramic bar and an electrode disposed on the bar. Each bar includes two wings that are separated by a predetermined angle to form a predetermined shape. A power source is used to apply a voltage to the stator to excite a bending mode vibration in the each of the wings, and the combined motion of the two wings produces an elliptical motion at a tip of the wing. A load is operatively connected to the stator, such that a portion of the load in contact with the stator is driven to move linearly through a frictional force between the load and the stator, due to the elliptical motion at the tip of the wing.
Piezoelectric Ultrasonic Motor
2009
2005
Systems and methods for dynamic analysis of muscle function and metabolism. WO 2005055815 A2
Robert S. Pozos, Jose L. Agraz
The present invention provides systems and methods for correlating dynamic muscle function and metabolism as a comprehensive approach to analyzing localized muscle physiology. In one aspect, the invention provides systems and methods for measuring and analyzing muscle force production and tissue metabolism. In one aspect, these are simultaneously monitored during isotonic muscle movements as an assessment of muscle physiology. In one aspect, the invention provides systems and methods for measuring changes in reflected and/or attenuated spectral features of whole blood in tissues before, during and after performance of repetitive tasks.
Finger Force keyboard
Force measuring device and method. US 6673026 B2
Robert S. Pozos, Jose L. Agraz
The present invention relates to a device and method for measuring force, primarily due to fatigue. In one embodiment, a finger fatigue measuring system is provided which measures the force output from fingers while the fingers are repetitively generating forces as they strike a keyboard. Force profiles of the fingers are generated from the measurements and evaluated for fatigue. The system can be used clinically to evaluate patients, to ascertain the effectiveness of clinical intervention, pre-employment screening, to assist in minimizing the incidence of repetitive stress injuries at the keyboard, mouse, joystick, and to monitor effectiveness of various finger strengthening systems. The system can also be used in a variety of different applications adapted for measuring forces produced during performance of repetitive motions.
Fatigue monitoring device and method. US 6352516 B1
Robert S. Pozos, Jose L. Agraz
The present invention relates to a device and method for monitoring fatigue. In one embodiment, a sequential finger fatigue measuring system is provided which measures the force output from fingers while the fingers are sequentially generating forces as they strike a keyboard. Force profiles of the fingers are generated from the measurements and evaluated for fatigue. The system can be used clinically to evaluate patients, to ascertain the effectiveness of clinical intervention, pre-employment screening, to assist in minimizing the incidence of repetitive stress injuries at the keyboard, mouse, joystick, and to monitor effectiveness of various finger strengthening systems.
2002
Force Calibrator
Finger Force Complete System