KCF TECHNOLOGIES, INC.
|KCF TECHNOLOGIES, INC. Patent applications|
|Patent application number||Title||Published|
|20150056058||PROPELLER SOUND FIELD MODIFICATION SYSTEMS AND METHODS - A propeller system for an aircraft includes an assembly for modifying a sound field of the propeller system. The propeller system includes a rotor supported for rotation about a rotor axis. The rotor has a central hub and a plurality of blades each extending outwardly from the hub to a tip. The rotor and blades are operable to propel an aircraft to travel in a direction. The rotor blades define a rotor plane perpendicular to the rotor axis. The blade tips define a circumferential rotational path as the blades are rotated by the rotor. The propeller system includes an acoustic resonator or multiple resonators having openings disposed within a distance to the propeller blade tip that is small compared to the wavelength of the propeller's fundamental blade tone and proximate to the rotor plane. The resonators are excited by tip flow of the blade as it passes the opening. The acoustic resonators are configured and positioned so as to direct acoustic energy to modify the sound field of the propeller system at blade pass or higher harmonic frequency tones in a desired direction relative to the aircraft.||02-26-2015|
|20140184024||MONOLITHIC ENERGY HARVESTING SYSTEM, APPARATUS, AND METHOD - An energy harvesting device utilizing a monolithic, mesoscale, single-degree-of-freedom inertial based resonator in which the support structure, beam-spring, and proof mass are a single component without joints, bonds, or fasteners. Frequency tuning features include holes in the proof mass in which mass can be added to change the devices resonance frequency as well as levers which add curvature to the beam-spring system and adjust system stiffness. Robustness is increase by designing the resonator to exhibit nonlinear behavior such that its power density is maximized for low vibration amplitudes and minimized for high amplitudes. The device structural resonance modes are designed to be much higher than the resonators proof mass-spring resonance frequency. Electromechanical transducers are used to convert the resonators mechanical energy to electrical energy. Electrical circuitry is included to extract and condition the electrical charge.||07-03-2014|
|20140182378||ENERGY HARVESTER POWERED ACCELEROMETER - A sensor may include a base, a resonator centered over the base, and an accelerometer disposed in a base of the resonator. The resonator may be configured to harvest energy from vibratory motion of a host device and includes a slot disposed on a center rectangular plane of the sensor. The sensor may include a circuit arrangement disposed on the accelerometer and in the slot on the center rectangular plane of the sensor. A piezoelectric element may be mounted on the resonator and electrically coupled with the circuit arrangement. The piezoelectric element may be configured to convert vibratory energy of the resonator to electrical energy. An optional antenna may be coupled with the circuit arrangement and configured to wirelessly transmit data from the sensor to a receiving station.||07-03-2014|
|20130317627||APPARATUSES AND METHODS FOR HARVESTING ENERGY FROM PROSTHETIC LIMBS - An apparatus for harvesting energy from motion of a prosthetic limb, wherein the prosthetic limb has motion in at least one degree of freedom, may include a hydraulic amplifier mechanically coupled with a generator. The hydraulic amplifier may include an input member configured to receive an input motion when a first motion in a degree of freedom of the prosthetic limb causes pressure and motion of hydraulic fluid. The hydraulic amplifier is configured to amplify the input motion of the input member to a greater output motion. The generator is configured to convert mechanical energy of the output motion into corresponding electrical energy delivered to one of an electrical load and an electrical storage reservoir.||11-28-2013|
|20130317626||APPARATUSES AND METHODS FOR USING ENERGY HARVESTING FOR VARIABLE SHOCK ABSORPTION IN A PROSTHETIC DEVICE - An apparatus for harvesting energy from motion of a prosthetic limb, wherein the prosthetic limb has motion in at least one degree of freedom, may include a piston configured to receive an input motion and provide an output motion when a first motion in a degree of freedom of the prosthetic limb causes pressure and motion of hydraulic fluid. The apparatus may include an electromagnetic motor for converting mechanical energy of the output motion into corresponding electrical energy delivered to an electrical load and a variable-impedance energy harvesting circuit across terminals of the motor.||11-28-2013|
|20080300821||SMART TETHER SYSTEM FOR UNDERWATER NAVIGATION AND CABLE SHAPE MEASUREMENT - A position sensing system including a flexible tether and at least one sensor at least partially embedded within a portion of the flexible tether is disclosed. The sensor may be adapted to detect a sensor position factor. The system also includes a communication device adapted to transmit the sensor position factor from the sensor, and a signal processor adapted to receive the sensor position factor. The signal processor is also adapted to calculate at least one of the shape or orientation of the flexible tether from the sensor position factor. The sensor position factor may be relative orientation, relative depth, relative pressure, presence of a magnetic field, presence of an electric field, acceleration, or relative rate of rotation. The system may also include a probe connected to the flexible tether, and the signal processor may calculate the orientation of the probe from the sensor position factor.||12-04-2008|
Patent applications by KCF TECHNOLOGIES, INC.