Abstract: A system and method for recovering unmanned aerial vehicles (UAVs) uses the fact that many small UAVs can hover in a vertical or near-vertical attitude. An exemplary system includes two or more rollers rotatable about respective axes of rotation, a mechanism to capture a UAV, and a support to which the rollers are mounted in such a way as to place the axes of rotation in parallel in a common plane. When the plane is in a vertical orientation, the capture mechanism is enabled to capture a UAV positioned adjacent the rollers. By hovering the UAV in the vertical position there is no forward velocity or momentum, and hence the craft can more easily be captured and the motor can be shut down without damaging the UAV. Misalignment during recovery is mitigated by cushioning in the rollers and the ability of the capture mechanism to compensate for imperfect alignment.

Abstract: A system and method for recovering unmanned aerial vehicles (UAVs) uses the fact that many small UAVs can hover in a vertical or near-vertical attitude. An exemplary system includes two or more rollers rotatable about respective axes of rotation, a mechanism to capture a UAV, and a support to which the rollers are mounted in such a way as to place the axes of rotation in parallel in a common plane. When the plane is in a vertical orientation, the capture mechanism is enabled to capture a UAV positioned adjacent the rollers. By hovering the UAV in the vertical position there is no forward velocity or momentum, and hence the craft can more easily be captured and the motor can be shut down without damaging the UAV. Misalignment during recovery is mitigated by cushioning in the rollers and the ability of the capture mechanism to compensate for imperfect alignment.

Abstract: A modification kit for the addition of an auxiliary battery charge management system for a marine or land vehicle having a starting battery and an auxiliary battery system. The kit includes a single pole breaker, a normally-on relay, and a two-way toggle switch. The single pole breaker is inserted in a circuit of the auxiliary battery system, and the normally-on relay and the toggle switch are inserted in the starting battery circuit of the vehicle to provide a dual mode charging system adapted to manual and automatic power regeneration of the starting battery and the auxiliary battery system.

Abstract: An electromotive device is disclosed which utilizes stacks of oriented magnetic material as stator bars. Electrical conductors are wound about the stator bars to create a stator inductor. The stator bars are generally configured to shield the electrical conductor winding from electromagnetic forces and further, to provide a first flux return path for the magnetic flux created by magnets fixed to a rotor for movement with respect to the stator inductor.

Abstract: Vision therapeutic apparatus comprising spaced apart displays for showing sequences of images to a viewer-patient. The apparatus provides the capability to vary the rate of image display and keeps score of the occurrence of the special events and the detection or misses thereof by the viewer. In one embodiment, two displays are disposed, generally, in line, one near to and the other distant from the viewer. Each display shows, on a random basis, a series of different images which alternate, image to image, with the series of images shown by the other display. The viewer alternately observes the near and distant displays, thereby performing an optical exercise, and signals to the apparatus when a special visual event occurs, e.g., the successive showing of the same image by the two displays. In another embodiment, two displays are spaced in side by side relation and are simultaneously observable by the viewer.