Failsafe sensing edge for automatic doors and gates having a U-s

Details Failsafe sensing edge for automatic doors and gates having a U-s Failsafe sensing edge for automatic doors and gates having a U-s

1993-05-20

1995-03-21

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

250221, 49 26, G01V 904

Patent

active

053998510

ABSTRACT:
A failsafe or self-monitoring sensing edge for an overhead door includes a channel mounted on the bottom edge of the door having a pair of downwardly extending arms which are spaced apart. An outer covering of soft material is attached to the channel for enclosing the arms. The covering supports within a rigid, separate free-floating actuating member extending upwardly through the arms. On one end of the channel is a light source and the other end is a photoswitch. When the covering is depressed upwardly as a result of an obstacle in the path of the door, the actuating member blocks the light beam and the photoswitch gives off a signal, which can be used to terminate or reverse motion of the door.

REFERENCES:
patent: 4423998 (1984-01-01), Inaba et al.
patent: 4958068 (1990-09-01), Pong et al.

Affiliated with

Also associated with

Rating

Failsafe sensing edge for automatic doors and gates having a U-s does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Failsafe sensing edge for automatic doors and gates having a U-s, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Failsafe sensing edge for automatic doors and gates having a U-s will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1150750