Vehicle telephone appts. with key-pad for driver of vehicle - is located in centre of steering wheel with contacts allowing transmission of selective signals during manoeuvres.

摘要

The Vehicle telephone has a central portion (2) of a steering wheel partially domed (5) to serve as a housing for a loudspeaker (21) and a microphone (23) which springs into its operative position when a catch (24) is released. Parallel rows (6-8) of keys (e.g. 9-11) intersect the longitudinal axis of the vehicle at right angles during straight travel. Special keys (12-17) which may be of distinctive shapes are located within reach of the driver's right thumb. Pulses are transmitted to corresp. parts of the installation via wiring and slip contacts, or electronically, to allow of steering. ADVANTAGE - Use of keypad involves less distraction from driving, even during negotiation of curves, when visibility in direction of travel is not impaired.