Shutter type digital clock

Details Shutter type digital clock Shutter type digital clock

1975-02-28

1976-06-29

Weldon, Ulysses

58 50R, 58 23R, G04B 1900

Patent

active

039656683

ABSTRACT:
There is provided a shutter type digital clock which comprises generally a display block, a light source block disposed behind the display block and a mechanical block disposed behind the light source block. Each of a plurality of display segment groups of the display block has a plurality of segmental openings arranged in the form of a figure "8" which are mechanically switched to internal light by two vertically movable shutter blades and two horizontally movable shutter blades to display a desired figure. The mechanical block mainly includes an upper frame, a lower frame, an upper cam supporting frame and a lower cam supporting frame, whereby a shifting mechanism is incorporated within a space defined by the upper and lower frames and a plurality of cam controlling mechanisms are incorporated within spaces defined by the upper frame and upper cam supporting frame and by the lower frame and lower cam supporting frame.

REFERENCES:
patent: 3103007 (1963-09-01), Gumpertz
patent: 3382495 (1968-05-01), Christy
patent: 3399474 (1968-09-01), Rinder
patent: 3399475 (1968-09-01), Rinder
patent: 3673787 (1972-07-01), Kovacevic
patent: 3683523 (1972-08-01), Boyles
patent: 3721087 (1973-03-01), Boyles et al.
patent: 3886725 (1975-06-01), Izawa et al.

Affiliated with

Also associated with

Rating

Shutter type digital clock does not yet have a rating. At this time, there are no reviews or comments for this patent.

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1268519