Abstract:
A solid freeform fabrication system includes a powdered build material deposited as a layer in a fabrication bin; a binding powder deposited as a layer over the layer of powdered build material; and an activating fluid that is selectively dispensed from an ejection head to activate the binding powder. The activated binding powder then selectively binds the build material into a cross-section of an object being fabricated.
Abstract:
An enhanced-contrast projection screen and method of controlling such screens are disclosed. An embodiment of a dynamic projection screen includes a passive layer and at least one active layer. The active layer is superimposed on at least a portion of the passive layer and is adapted to selectively toggle between being transparent and being opaque. A method of controlling such a screen includes determining desired dimensions of a reflective region, and activating at least a portion of an active layer superimposed on at least a portion of a passive layer. The active layer is adapted to selectively toggle between being transparent and opaque.
Abstract:
An apparatus and method rotate a first contact (80, 180, 380) of a fluid supply body (70, 170) into contact with a second contact (40, 140, 340) of a fluid receiving device (22, 122, 322, 522).
Abstract:
A hydrogen generating apparatus includes a chemical reaction chamber, a chemical solution reservoir, an unpowered pressure-producing member for moving a chemical solution from the chemical solution reservoir to the chemical reaction chamber, and a catalyst bed in the chemical reaction chamber.
Abstract:
A hydrogen generating apparatus includes a chemical reaction chamber, a chemical solution reservoir, an unpowered pressure-producing member for moving a chemical solution from the chemical solution reservoir to the chemical reaction chamber, and a distributed catalyst bed about the chemical reaction chamber.
Abstract:
A gas generation system includes a chemical reactor configured to produce a gas from a continuous flow of aqueous solution, and includes a pump configured to control the flow of the aqueous solution through the chemical reactor to control a production rate of the gas.
Abstract:
A sensor/switching device configuration that includes a substrate and at least one element imprinted on the substrate containing an electroconductive material.
Abstract:
An apparatus and method rotate a first contact (80, 180, 380) of a fluid supply body (70, 170) into contact with a second contact (40, 140, 340) of a fluid receiving device (22, 122, 322, 522).