Parking meter reset device

Details Parking meter reset device Parking meter reset device

1988-02-18

1989-04-25

Roskoski, Bernard

Horology: time measuring systems or devices

Controlled by a disparate device

Vehicle or vehicle part

368 90, G04F 800

Patent

active

048254258

ABSTRACT:
A parking meter reset device includes an infra-red radiation transmitter element slidably positioned within a transmitter module and an infra-red radiation detector element positioned within a cavity in a detector module. The modules are within a housing adapted for mounting on a parking meter pole so that the detector element is directed downwardly from 5.degree. to 10.degree. below horizontal and the transmitter element is directed downwardly at an angle about 5.degree. less than the downward angle of the detector element. This minimizes detection of stray radiation such as from sunlight. An edge of a first window, positioned in front of the transmitter module, abuts an edge of a second window, in front of the detector module. A portion of the radiation transmitted into the first window is refracted through the abutting edges into the second window. If either window is blocked, refracted radiation causes the parking meter to function like a non-resetting meter. The transmitter and receiver circuitry draws power only during brief pulses occurring at greater intervals, minimizing power requirements.

REFERENCES:
patent: 3150754 (1964-09-01), Greene et al.
patent: 3324647 (1967-06-01), Jedynak
patent: 3999372 (1976-12-01), Welch et al.
patent: 4043117 (1977-08-01), Maresca et al.

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