Large vehicle entrance door safety system and method

Signals and indicators – Vehicle – Curb feelers

Patent

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Details

B60T 1300

Patent

active

049553151

ABSTRACT:
A large vehicle entry door safety system which uses at least one fixed mark at a measured height and a position indicator attached to the door. By safely and clearly indicating the height of the large vehicle entry door by visual alignment of the position indicator with the fixed mark or marks, vehicle operators or door operators or both can be helped to avoid collisions with the door.

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patent: 4603828 (1986-08-01), Farley, Jr. et al.
patent: 4621252 (1986-11-01), Johns et al.
patent: 4771505 (1988-09-01), Dilich

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