A composite leaf spring comprising a thermoset matrix material reinforced with fibers embedded in the matrix of the composite leaf spring.

The height (52, 54) are formed between the composite blade back and a cutting blade (4).

The composite blade comprises a matrix (4) of the transparent material wherein is reserved a housing (5) whereof the flat surface occupies the major part of the composite blade (2) surface.

The tool includes an elongated handle, an elongated shaft, and a compound blade head.

A pultruded composite blade for a Darrieus-type vertical axis wind turbine is disclosed, along with a method for fabricating such a blade.

As the phase shifting means, a half-wave plate (15), a prism (39) of a retardation type, or a composite optically active plate (52) can be used.

In one embodiment, a laminate structure includes a metal-polymer composite lamina.

The present invention includes a composite hockey stick (1) with vibration inserts (21, 22, 23) to control the vibration characteristics of the composite shaft (12) and composite blade (14).

A stepped drill bit with composite blade back and constant amount of feed is disclosed.

The composite blade is pultruded straight and, when installed on the tower, the blade is elastically bent into a curved shape that approximates a troposkein.

The metal-polymer composite lamina has a first face and a second face spaced apart, and extends to a terminal edge.

The step is provided with an axial angle of relief (53) and/or a radial angle of relief (51), and forms composite blade back combined with the blade back behind the step.

An integrated composite beam structure.

The structure has a substrate, which includes a surface and a thickness defined underlying the surface.

The handle is attached to a proximal end of the elongated shaft and the compound blade is fixed to a distal end of the elongated shaft.