Abstract: A rotary fan system with dual rotation axes, wherein a driving arm rotates about a first axis, and trailing arm rotates about a second axis.

Abstract: A system with a first turbine rotating in a first direction and a second turbine rotating in a second direction, wherein there is negative clearance associated with blades of the first turbine and the blades of the second turbine.

Abstract: A wingless compact aircraft, with a limited footprint and no exposed high-speed moving parts. The aircraft can takeoff and land vertically, can fly at high-speed and even cruise on land and water in one of the preferred embodiments.

Abstract: A rotary fan system with dual rotation axes, wherein a driving arm rotates about a first axis, and trailing arm rotates about a second axis.

Abstract: A rotary fan system with dual rotation axes, wherein a driving arm rotates about a first axis, and trailing arm rotates about a second axis.

Abstract: A rotary fan system with dual rotation axes, wherein a driving arm rotates about a first axis, and trailing arm rotates about a second axis.

Abstract: A system with a first turbine rotating in a first direction and a second turbine rotating in a second direction, wherein there is negative clearance associated with blades of the first turbine and the blades of the second turbine.

Abstract: A wingless compact aircraft, with limited footprint and no exposed high-speed moving parts. The aircraft can takeoff and land vertically, can fly at high-speed and even cruise on land and water in one of the preferred embodiments.

Abstract: A wingless compact aircraft, with limited footprint and no exposed high-speed moving parts. The aircraft can takeoff and land vertically, can fly at high-speed and even cruise on land and water in one of the preferred embodiments.

Abstract: A wingless compact aircraft, with limited footprint and no exposed high-speed moving parts. The aircraft can takeoff and land vertically, can fly at high-speed and even cruise on land and water in one of the preferred embodiments.

Abstract: A load communication device and method is provided, that identifies and transmits to a PSU the load requirement to operate a load device that is powered by the PSU, by analyzing the characteristics of current applied to the load device by a given input voltage generated by the PSU. The load communication device is configured to transmit between the PSU and the load device solely over the 2 wire cable that extends between the PSU and the load device.

Abstract: The herein invention is presenting a lift generating method based on a semi-open fluid jet flowing in a closed circuit around a lifting airfoil. A VTOL aircraft with maximized payload room and car-like shape is the preferred embodiment of the invention. The herein aircraft uses no wings, exposed propellers, hot gas jets or other high injury risk means for propulsion and lift, and it can be driven by ordinary skilled people. Furthermore the aircraft has a small footprint and can land, take off and even cruise on water in one of the preferred embodiments.

Abstract: A new and useful circuitry for DC to AC single stage conversion are presented, with the advantages of bi-directionality, resonant power transfer, high efficiency and simplicity. The output voltage dual polarity is achieved by means of control, synchronizing the output switch with one or the other of the primary switches. The invention also provides the means of canceling the common noise of the magnetic transformer.

Abstract: The herein invention is presenting a lift generating method based on a semi-open fluid jet flowing in a closed circuit around a lifting airfoil. A VTOL aircraft with maximized pay load room and car-like shape is the preferred embodiment of the invention. The herein aircraft uses no wings, exposed propellers, hot gas jets or other high injury risk means for propulsion and lift, and it can be driven by ordinary skilled people. Furthermore the aircraft has a small footprint and can land, take off and even cruise on water in one of the preferred embodiments.

Abstract: The herein invention is presenting a lift generating method based on a semi-open fluid jet flowing in a closed circuit around a lifting airfoil. A VTOL aircraft with maximized pay load room and car-like shape is the preferred embodiment of the invention. The herein aircraft uses no wings, exposed propellers, hot gas jets or other high injury risk means for propulsion and life, and it can be driven by ordinary skilled people. Furthermore the aircraft has a small footprint and can land, take off and even cruise on water in one of the preferred embodiments.

Abstract: A new and useful circuitry for DC to AC single stage conversion are presented, with the advantages of bi-directionality, resonant power transfer, high efficiency and simplicity. The output voltage dual polarity is achieved by means of control, synchronizing the output switch with one or the other of the primary switches. The invention also provides the means of canceling the common noise of the magnetic transformer.

Abstract: A new and useful cable plug is provided, that is configured for a socket-plug system connecting a PSU to a load device over a 2 wire cable. The cable plug is selectively moveable to one of a plurality of positions for selecting a predetermined output voltage (or other operational characteristic) for the load device In addition, a new and useful socket is provided, that is configured to mate with the cable plug, to provide the selected output voltage (or other operational characteristic) for the load device.

Abstract: A new and useful cable plug is provided, that is configured for a socket-plug system connecting a PSU to a load device over a 2 wire cable. The cable plug is selectively moveable to one of a plurality of positions for selecting a predetermined output voltage (or other operational characteristic) for the load device In addition, a new and useful socket is provided, that is configured to mate with the cable plug, to provide the selected output voltage (or other operational characteristic) for the load device.

Abstract: A load communication device and method is provided, that identifies and transmits to a PSU the load requirement to operate a load device that is powered by the PSU, by analyzing the characteristics of current applied to the load device by a given input voltage generated by the PSU. The load communication device is configured to transmit between the PSU and the load device solely over the 2 wire cable that extends between the PSU and the load device.

Abstract: Connecting a load device to a power supply is described. A connection to a load device is detected on a communication link, where the load device is in a first power state. In response to detecting the connection to the load device, a bias power source is enabled to supply bias power on the communication link to the load device. Power information of the load device is received over the communication link. Power is supplied to the load device, based on the power information, to place the load device in a second power state.