Abstract:
A validator portion (12) of a bill validator is disclosed comprising two different plastic materials of different colors, fused together. The first plastic material (70) is preferably opaque, or black, and the second plastic material (64) is preferably clear. The clear material is used to provide windows (62, 63) through the validator housings for light to pass from light sources, such as light emitting diodes (50), to photodetectors, such as phototransistors (56), and protects the light source and photodetectors from water, dirt and air. Prisms (82a, 82b) can be provided as well, to provide a detector for foreign matter such as string. In accordance with another aspect of the invention, the validator can be formed by a two shot, injection molding process.
Abstract:
Control apparatus for a line operated telephone is described. This control circuitry is designed to be primarily telephone line powered and to not employ a large capacitor for storing power to sustain the circuitry during open switch intervals in which the telephone line is not powered. Rather, the present circuitry includes a telephone line monitoring circuit for sensing a power down condition, a processing means such as a microprocessor with an associated power down program for storing process status at a time just prior to power down and for resetting the processing at the appropriate place upon power up, and low power state monitoring latches for monitoring important events, such as an on hook condition, coin collection and refund operations occurring during an open switch interval. In combination, a low power operation is achieved primarily utilizing a regularly interrupted source, the phone lines, and requiring only a small battery to power the low power monitoring state monitoring latches.
Abstract:
A validator portion (12) of a bill validator is disclosed comprising two different plastic materials of different colors, fused together. The first plastic material (70) is preferably opaque, or black, and the second plastic material (64) is preferably clear. The clear material is used to provide windows (62, 63) through the validator housings for light to pass from light sources, such as light emitting diodes (50), to photodetectors, such as phototransistors (56), and protects the light source and photodetectors from water, dirt and air. Prisms (82a, 82b) can be provided as well, to provide a detector for foreign matter such as string. In accordance with another aspect of the invention, the validator can be formed by a two shot, injection molding process.
Abstract:
A validator portion (12) of a bill validator is disclosed comprising two different plastic materials of different colors, fused together. The first plastic material (70) is preferably opaque, or black, and the second plastic material (64) is preferably clear. The clear material is used to provide windows (62, 63) through the validator housings for light to pass from light sources, such as light emitting diodes (50), to photodetectors, such as phototransistors (56), and protects the light source and photodetectors from water, dirt and air. Prisms (82a, 82b) can be provided as well, to provide a detector for foreign matter such as string. In accordance with another aspect of the invention, the validator can be formed by a two shot, injection molding process.