Abstract: A helicopter includes a rotor with short blades and tip thrusters. The blades extend from an annular fuel tank that rotates with the blades. Centrifugal force propels fuel from the interior compartment of the annular tank, through conduits extending through the blades from root to tip, to the tip thrusters. Valves (e.g., solenoid valves and/or a flyweight governor) regulate fuel flow to achieve and maintain a determined steady rotational speed. A fuselage covered by a canopy is mounted atop a bearing on the annular fuel tank. The pitch of each blade may be adjusted collectively and cyclically using a swash ring and hydraulic linear actuators.

Abstract: A device (101) for supporting or exercising the pelvic floor muscles in a female human. The device has a unitary elongate body having a first enlarged end (103), a second enlarged end (105), and a relatively narrow interconnecting region (107) that interconnects the first enlarged end and the second enlarged end. The first enlarged end (103) generally extends in a first direction from the interconnecting region (107) and from one end of the interconnecting region. The second enlarged end (105) generally extends in a second generally opposite direction from the interconnecting region (107) and from the other end of the interconnecting region. The first enlarged end (103), the second enlarged end (105), and the narrow interconnecting region (107) are substantially fully insertable into the vagina to provide resistance to contraction of the pelvic floor muscles.

Abstract: A device (101) for supporting or exercising the pelvic floor muscles in a female human. The device has a unitary elongate body having a first enlarged end (103), a second enlarged end (105), and a relatively narrow interconnecting region (107) that interconnects the first enlarged end and the second enlarged end. The first enlarged end (103) generally extends in a first direction from the interconnecting region (107) and from one end of the interconnecting region. The second enlarged end (105) generally extends in a second generally opposite direction from the interconnecting region (107) and from the other end of the interconnecting region. The first enlarged end (103), the second enlarged end (105), and the narrow interconnecting region (107) are substantially fully insertable into the vagina to provide resistance to contraction of the pelvic floor muscles.