An adjustable flap (62, 64) with an attachment (66, 68) on each side of the heat cap enables the size of the cap to be adjusted to fit different users.

Adjustable shutter vanes may also be provided, adapted either for installation at the same time as the security bar assemblies of the invention, or by later retrofitting of existing installations.

Complete with adjustable sliding gate and flow deflector, both available in different versions: operated manually or automatically with remote control and with different sections/flows.

The roller shutter shaft may also be positioned in an adjustable manner.

The roller shutter box is characterised by in particular adjustable positioning means (1) located in the bottom area of the roller shutter box.

The adjustable lever 14 is attached to an offset shaft 20 that applies tension to the polyurethane flap 22 when rotated.

The enhanced performance is achieved by using a metal-halide light source, a power conservative pre-condenser optics train, an annular diaphragm, a cardioid annular condenser, and an adjustable light-filtering iris.

Provided are an adjustable optical receiver, an adjustable optical transmitter, and an adjustable optical transceiver.

The present invention proposes a posture-adjustable solar-collecting window blind, which can adjust the position of solar cells to better collect solar energy.

An adjustable flap (62, 64) with an attachment (66, 68) on each side of the heat cap enables the size of the cap to be adjusted to fit different users.

The adjustable bypass circuit includes an adjustable capacitor or a fixed capacitor coupled to an adjustable resistor.

With the flying machine in full swing, note the adjustable end flap (yellow) at the bottom of the daggerboard (equipped with a trimmer).

Articles of adjustable diameter and of adjustable rigidity are disclosed.

An adjustable rotor and a radial piston machine which may utilize an adjustable rotor.

The tail propeller is accomplished with adjustable or non-adjustable blade pitch.