84results about How to "More balanced" patented technology

The present invention is directed to an exercise device that enhances a body workout by requiring a user to maintain balance while exercising. The exercise device has an elongate flexible member connected to a base. The flexible member has an upper surface and a lower surface. The upper surface has a pair of foot placement portions configured and arranged such that a user positioned thereon must exercise balance. The foot placement portions are separated along the longitudinal axis such that a user standing thereon assumes an athletic stance.

This invention provides an optical image lens system comprising: a positive first lens element having a convex object-side surface; a second lens element; a positive third lens element; a fourth lens element; a positive plastic fifth lens element having a convex object-side surface and a concave image-side surface, at least one of the object-side and image-side surfaces is aspheric; and a negative plastic sixth lens element having a concave image-side surface, at least one of the object-side and image-side surfaces is aspheric, wherein the shape of the image-side surface changes from concave at the paraxial region thereof to convex while away from the paraxial region thereof.

A wind turbine may be controlled in a variety of manners to optimize operating parameters. In one arrangement, for example, the length or the pitch of a wind turbine rotor blade may be adjusted to avoid harmonic resonance frequencies. In another example, the length of a rotor blade may be modified to reduce noise or to optimize profits or both. The controls may be based on data from various types of sensors including accelerometers, sound meters, strain gauges and the like. Actuation of extendable rotor blades can rotate wind turbine rotors without wind or generator pulsing affording multiple advantages. A battery test control may also be used to determine the operational readiness of a battery useful for a variety of purposes in a turbine.

A method and apparatus for altering converter control as a function of the degree of unbalance in supply line voltages to substantially eliminate second harmonics on the supply lines caused by active control of the converter including identifying supply line peak amplitude values and using the peak values to identify potential second harmonics and then altering command values as a function of the potential second harmonic components.

A free piston engine is configured with a pair of opposed engine cylinders located on opposite sides of a fluid pumping assembly. An inner piston assembly includes a pair of inner pistons, one each operatively located in a respective one of the engine cylinders, with a push rod connected between the inner pistons. The push rod extends through an inner pumping chamber in the fluid pumping assembly and forms a fluid plunger within this chamber. An outer piston assembly includes a pair of outer pistons, one each operatively located in a respective one of the engine cylinders, with at least one pull rod connected between the outer pistons. The pull rod extends through an outer pumping chamber in the fluid pumping assembly and forms a fluid plunger within this chamber. The movement of the inner and outer piston assemblies during engine operation will cause the fluid plungers to pump fluid from a low pressure container into a high pressure chamber as a means of storing the energy output from the engine. A hydraulic coupler in communication with the pumping chambers will synchronize the motion of the inner and outer piston assemblies to assure that the pistons in the opposed cylinders are operating in opposition to one another.

A free piston engine is configured with a pair of opposed engine cylinders located on opposite sides of a fluid pumping assembly. An inner piston assembly includes a pair of inner pistons, one each operatively located in a respective one of the engine cylinders, with a push rod connected between the inner pistons. The push rod extends through an inner pumping chamber in the fluid pumping assembly and forms a fluid plunger within this chamber. An outer piston assembly includes a pair of outer pistons, one each operatively located in a respective one of the engine cylinders, with at least one pull rod connected between the outer pistons. The pull rod extends through an outer pumping chamber in the fluid pumping assembly and forms a fluid plunger within this chamber. The movement of the inner and outer piston assemblies during engine operation will cause the fluid plungers to pump fluid from a low pressure container into a high pressure chamber as a means of storing the energy output from the engine. Alternatively, the piston assemblies may drive a linear alternator. At least one of the pistons includes one or more generally axially extending bores partially filled with a sodium compound. As the piston reciprocates, the sodium moves back and forth in each cooling bore, thereby better distributing heat in the piston.

The invention regards to a mechanism for the aligned closure of sliding doors (1-3), in particular for furniture or compartments (V1-V3) with two or more doors, with a sliding door (1, 2 or 3) for each compartment, and where each compartment opens by sliding and overlapping of one door with one of the adjacent doors and closes in alignment with the adjacent doors. The mechanism consists of a single bracket (10) for each door, one end of the bracket (10) being fixed on the door, and its opposite end being equipped with a first sensing bearing (13) to run along a cam guide (70), said bracket (10) being suitable for inclination and transversal movement with a carriage (30), which also allows it to slide along a rail (50) to be positioned on the upper surface of the compartments. The carriage (30) can be adjusted transversally and the bracket (10) can move axially in relation to the carriage (30). An arm (14), one end of which is firmly attached to the bracket (10), while the other end (14a) is equipped with at least a second sensing device having a bearing (15, 15′), can run along an other longitudinal cam guide (60) using the same bracket (10) for inclination and movement.

An integral impeller and fuel pump for a small gas turbine engine, the impeller being a centrifugal impeller to supply compressed air to the combustor, the rotor disk of the centrifugal compressor having at least one radial fuel passage connecting a central bore of the rotor disk to a fuel nozzle located on the rear face of the rotor disk. A low pressure fuel supplied by a small pump delivers the fuel to the central bore where the fuel is collected within helical grooves and channeled into the radial fuel passages where the fuel is pressurized to a relatively high pressure due to the high rotational speed of the centrifugal compressor. Highly compressed fuel is injected into the combustor through fuel nozzles in an axial direction as the rotor disk rotates. Helical grooves in the central bore each connected to a radial fuel passage move the fuel to an opposite side of the central bore to counteract rotor imbalance. In another embodiment, a primary annular groove collects fuel and, at a low speed, passes all of the fuel to a first radial fuel passage into a first fuel nozzle such that only some of the fuel nozzles inject fuel into the combustor. At a higher speed, some of the fuel collected in the primary annular groove is spilled over into a secondary annular groove that passes the spilled-over fuel into a second radial passage and second fuel nozzle such that all of the fuel nozzles inject fuel into the combustor.

Exercise apparatus for balance and strength training that enables a user to perform push and pull oriented exercises with the user's hands or feet against the apparatus. Includes a pivot space, for example a slot or area or area with higher or lower areas, wherein the pivot space is configured to couple with a pivot element, for example a ball, cylinder, wheel or any other type of element that may move with respect to the pivot space and exercise interface. The movable pivot element enables force and hence torque required to balance to differ on each side of the apparatus. For example, a user with an injured shoulder may desire to utilize more force to balance during a push-up with the uninjured shoulder and less force and more range of motion to balance with the injured shoulder.

An image capturing system includes, in order from an object side to an image side, a first lens element, a second lens element, a third lens element, a fourth lens element and a fifth lens element. The first lens element with positive refractive power has a convex object-side surface at a paraxial region. The second lens element and the third lens element have refractive power. The fourth lens element with negative refractive power has a concave object-side surface at a paraxial region and a convex image-side surface at a paraxial region. The fifth lens element with refractive power has an image-side surface, wherein the image-side surface changes from concave at a paraxial region to convex at a peripheral region, and an object-side surface and the image-side surface of the fifth lens element are aspheric. The image capturing system has a total of five lens elements with refractive power.

A piezoelectric device includes: a piezoelectric vibrating reed; and a package, wherein the piezoelectric vibrating reed has a vibrating part and first and second supporting arms extending from a base end part, the package has a base, a lid, a cavity defined by the base and the lid, a convex part projecting from the base or the lid into the cavity, a length of the first supporting arm is shorter than a length of the second supporting arm, and the convex part is provided in a range ahead of a leading end of the first vibrating arm in an extension direction of the first supporting arm and at least partially overlapping with the second supporting arm in a length direction of the piezoelectric vibrating reed so as not to overlap with the piezoelectric vibrating reed in a plan view.

A manifold including a stepped louvre to control airflow along a fan blade. A fan blade for use in a high-volume, low-speed fan, wherein the fan blade includes a body portion, a leading edge portion and a trailing portion. The leading edge portion of the fan blade includes a series of steps extending along the length of the leading edge. The fan distributes airflow from the manifold.

Fiber oriented sails made of woven panels of scrim type weave wherein warp yarns in the panels follow primary load paths in a sail and a method for making woven panels.