Display apparatus

Details Display apparatus Display apparatus

1986-09-29

1989-05-16

Yusko, Donald J.

Communications: electrical

Land vehicle alarms or indicators

Internal alarm or indicator responsive to a condition of the...

340783, 340763, 34081505, 40449, G09F 937, G09F 1134

Patent

active

048313726

ABSTRACT:
A magnetically actuated information display device is disclosed which includes a rigid, permanently magnetized display segment movably mounted in a non-magnetic chamber having a transparent viewing window and containing an opaque fluid whose color contrasts with the color of the display device. A core affixed to the rear of the chamber is capable of being selectively magnetized so as to repel or attract the display segment, according to the selected magnetic polarity of the core. Repulsion of the display segment by the core causes the display segment to move toward the transparent window through which the color of the display segment may be viewed as the opaque fluid is displaced away from the transparent window. Attraction of the display segment by the core causes the display segment to move away from the transparent window thereby allowing the opaque fluid to obstruct viewing of the display segment. In this position, the color of the opaque fluid is viewed through the transparent window. Bistability of the device is achieved by the residual magnetism in the core acting on the permanently magnetized display segment. A plurality of display devices may be combined in an array to form a display panel.

REFERENCES:
patent: 3516185 (1970-06-01), Paine et al.
patent: 3530606 (1968-10-01), O'Keefe
patent: 3825727 (1974-07-01), Passien
patent: 3916403 (1975-10-01), Mandzsu et al.
patent: 3935571 (1976-01-01), Sargent

Affiliated with

Also associated with

Rating

Display apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2326098