Transit car door system and operation

Details Transit car door system and operation Transit car door system and operation

1989-04-05

1991-01-01

Olszewski, Robert P.

Railway rolling stock

Special car bodies

Passenger

49 28, 49 29, 49 31, E05F 1520

Patent

active

049810847

ABSTRACT:
A computer assisted transit car door operating system for augmented automation of transit car door panel operation while providing safety provisions to restrain rail movement unless all passage doorways are closed. A programmable logic controller generates a sequence initiating (opening or closing) signal for a door panel; or, a manual input signal can be introduced for such purpose. The controller receives signals from a panel position sensor and a panel movement sensor to evaluate door panel status and generate status indication and panel movement signals. Automated control of door panel movement is selectively directed to a doorway, or doorways, at which an opening or closing problem is being encountered; that is, the exclusion of door panel movement signals to properly operated door panels. An electrical cam device utilizes a radiant energy emitter and detector with a reversible-direction, coded attenuator, keyed to a reversible-direction motor drive for a door panel; modulating output of such radiant energy detector indicates direction of movement and other data by coordination with the controller. An electrically controlled power regulator controls connection of a source of DC power to control direction of rotation of a reversible-rotation DC motor controlling opening and closing of door panel.

REFERENCES:
patent: 1691729 (1928-11-01), Meyers
patent: 3575604 (1971-04-01), Smith
patent: 3782034 (1974-01-01), Lynn et al.
patent: 3857197 (1974-12-01), Reddy et al.
patent: 4050189 (1977-09-01), Peterson
patent: 4625291 (1986-11-01), Hormann
patent: 4679508 (1987-07-01), Fruehan et al.
patent: 4732238 (1988-03-01), Baumgartner
patent: 4753323 (1988-06-01), Kahleipuro
patent: 4803807 (1989-02-01), Stockermann et al.

Affiliated with

Also associated with

Rating

Transit car door system and operation does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Transit car door system and operation, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Transit car door system and operation will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1991204