Abstract: A wind turbine device may include four wings. A first wing may include a first leading edge and a first trailing edge, and a second wing may include a second leading edge a second trailing edge. The first and second leading edges may be positioned on opposite sides of the axis of rotation, the first and second trailing edges may be positioned on opposite sides of the axis of rotation, and the first and second leading edges may be positioned relatively further to the axis of rotation than the first and second trailing edges. A third wing may include a third leading edge and a third trailing edge, and a fourth wing may include a fourth leading edge and a fourth trailing edge. The third and fourth trailing edges may be each positioned proximate to the axis of rotation and positioned on opposite sides of the axis of rotation.

Abstract: A wind turbine device may include four wings. A first wing may include a first leading edge and a first trailing edge, and a second wing may include a second leading edge a second trailing edge. The first and second leading edges may be positioned on opposite sides of the axis of rotation, the first and second trailing edges may be positioned on opposite sides of the axis of rotation, and the first and second leading edges may be positioned relatively closer to the axis of rotation than the first and second trailing edges. A third wing may include a third leading edge and a third trailing edge, and a fourth wing may include a fourth leading edge and a fourth trailing edge. The third and fourth trailing edges may be each positioned proximate to the axis of rotation and positioned on opposite sides of the axis of rotation.

Abstract: A therapeutic measuring device that determines a difference in length between a pair of legs of a user. The therapeutic measuring device includes a stationary platform and a movable platform. The stationary platform has one leg of the user stand thereon. The movable platform has the other leg of the user stand thereon. The movable platform is moved vertically until the other leg of the user standing thereon aligns with the one leg of the user standing on the stationary platform, with an amount of elevation of the movable platform determining the difference in the length between the pair of legs of the user.

Abstract: A heat exchanger includes two headers and tubes secured to and extending between the headers, each tube including a wall formed with a leading surface, a trailing surface and lateral surfaces extending between the headers and interconnecting the leading and trailing surfaces, a passage enclosed by the wall for carrying fluid between the headers, and long and short fins formed integrally with and extending outward from the wall.

Abstract: A time-temperature indication device includes a first reservoir having a fluid disposed therein, and a capillary tube. The capillary tube is disposed proximate to the first reservoir to receive fluid from the first reservoir responsive to changes in viscosity of the fluid based on changes in temperature. The capillary tube restricts flow of the fluid out of the first reservoir into the capillary tube to enable fluid flow only in a single direction.

Abstract: Optical systems configured to withstand operation in high acceleration and varying temperature environments, and methods of assembling the same. In one example, an imaging optical apparatus includes a primary minor made of an unreinforced polymer, a secondary mirror made of the unreinforced polymer and optically coupled to the primary minor, a field lens optically coupled to the secondary minor, and a strut having a plurality of cross-struts and mounting features configured to mount the primary minor, the secondary mirror and the field lens. In some examples, the imaging optical apparatus further includes an outer retainer disposed behind the primary minor and coupled to the strut, and an inner retainer disposed behind the field lens and coupled to the strut, the outer and inner retainers configured to structurally support the primary minor and the field lens and to accommodate deflections of the primary minor.

Abstract: Optical systems configured to withstand operation in high acceleration and varying temperature environments, and methods of assembling the same. In one example, an imaging optical apparatus includes a primary minor made of an unreinforced polymer, a secondary mirror made of the unreinforced polymer and optically coupled to the primary minor, a field lens optically coupled to the secondary minor, and a strut having a plurality of cross-struts and mounting features configured to mount the primary minor, the secondary mirror and the field lens. In some examples, the imaging optical apparatus further includes an outer retainer disposed behind the primary minor and coupled to the strut, and an inner retainer disposed behind the field lens and coupled to the strut, the outer and inner retainers configured to structurally support the primary minor and the field lens and to accommodate deflections of the primary minor.

Abstract: A time-temperature indication device includes a first reservoir having a fluid disposed therein, and a capillary tube. The capillary tube is disposed proximate to the first reservoir to receive fluid from the first reservoir responsive to changes in viscosity of the fluid based on changes in temperature. The capillary tube restricts flow of the fluid out of the first reservoir into the capillary tube to enable fluid flow only in a single direction.

Abstract: An improved device for assisting a caregiver in lifting and moving a patient. The device comprises a unitary garment member having a front panel section, a rear panel section and an interconnecting central or middle panel section. The device further includes a plurality of integral, reinforced support straps that enhance the structural integrity of the garment member. The rear panel section includes two flap portions extending laterally on opposing sides of the rear panel section. The two flap portions can be pulled forward and attached to the front panel section whereby the device becomes a vest-type garment that completely surrounds the patient's torso. The improved patient assistance device includes a plurality of strategically positioned hand holds, which provide enhanced leverage enabling a caregiver to more easily assist a patient wearing the device to move from one position to another.

Abstract: An embodiment of a system for preventing the loss of a spooled device into a wellbore comprises a housing defining an aperture extending therethrough, the aperture sized for allowing the spooled device to pass therethrough, a sensor to measure at least one condition of the system, and a gripper device to engage with the spooled device and the housing to prevent the loss of the spooled device when the condition of the system is a failure condition.

Abstract: A device for assisting a caregiver in lifting and moving a patient. The device comprises a waist belt that includes a separate “glute” strap, which wraps around the patient's buttocks. Both the waist belt and the glute strap are fully adjustable to ensure a snug, comfortable fit. The device may further include a unitary garment member having a plurality of integral, reinforced support straps that enhance the structural strength of the garment member. The unitary garment member includes two flap portions extending laterally on opposing sides of a rear panel section that can be pulled forward and attached to a front panel section transforming the device into a vest-type garment that completely surrounds the patient's torso. The device includes a plurality of strategically positioned hand holds, which provide enhanced leverage enabling a caregiver to more easily assist a patient wearing the device to move from one position to another.

Abstract: An improved device for assisting a caregiver in lifting and moving a patient. The device comprises a unitary garment member having a front panel section, a rear panel section and an interconnecting central or middle panel section. The device further includes a plurality of integral, reinforced support straps that enhance the structural integrity of the garment member. The rear panel section includes two flap portions extending laterally on opposing sides of the rear panel section. The two flap portions can be pulled forward and attached to the front panel section whereby the device becomes a vest-type garment that completely surrounds the patient's torso. The improved patient assistance device includes a plurality of strategically positioned hand holds, which provide enhanced leverage enabling a caregiver to more easily assist a patient wearing the device to move from one position to another.

Abstract: An operation of drilling an earth borehole uses a drilling rig, a drill string of drill pipes having its generally upper end mechanically coupleable with and suspendable from the drilling rig, a drive string portion of the drill string, mechanically coupleable with the topmost drill pipe of said drill string, and a drive mechanism mechanically coupleable with the drive string for rotating the drive string and the drill string. A system for generating electric power in the region of the drive string includes an electric generator, which includes a rotating generator component mounted on said drive string for rotation therewith and a stationary generator component mounted on a stationary portion of the drilling rig. The rotating generator component produces electric power in the region of the drive string.

Abstract: An operation of drilling an earth borehole uses a drilling rig, a drill string of drill pipes having its generally upper end mechanically coupleable with and suspendable from the drilling rig, a drive string portion of the drill string, mechanically coupleable with the topmost drill pipe of said drill string, and a drive mechanism mechanically coupleable with the drive string for rotating the drive string and the drill string. A system for generating electric power in the region of the drive string includes an electric generator, which includes a rotating generator component mounted on said drive string for rotation therewith and a stationary generator component mounted on a stationary portion of the drilling rig. The rotating generator component produces electric power in the region of the drive string.

Abstract: A heat exchanger includes two headers and tubes secured to and extending between the headers, each tube including a wall formed with a leading surface, a trailing surface and lateral surfaces extending between the headers and interconnecting the leading and trailing surfaces, a passage enclosed by the wall for carrying fluid between the headers, and long and short fins formed integrally with and extending outward from the wall.

Abstract: An optical element mounting includes a frame, and a shuttle that is translatable relative to the frame. The shuttle includes inner and outer portions that are mechanically coupled together by a plurality of flexures that effectively bending and twisting of the shuttle from being transmitted to an optical element, such as an optical window, that is mounted on the inner portion of the shuttle. The flexures may be thin linking strips of material between the outer and inner portions. The flexures may have a thickness that is greater in an expected load direction, than in a direction perpendicular to the load direction. The optical mounting may include a locking mechanism, for example including a shape memory alloy wire, to lock the shuttle in a predetermined location relative to the frame.

Abstract: An embodiment of a system for preventing the loss of a spooled device into a wellbore comprises a housing defining an aperture extending therethrough, the aperture sized for allowing the spooled device to pass therethrough, a sensor to measure at least one condition of the system, and a gripper device to engage with the spooled device and the housing to prevent the loss of the spooled device when the condition of the system is a failure condition.