Changeable display

Card – picture – or sign exhibiting – Changing exhibitor – Double reel and web

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

C09F 1118

Patent

active

042558891

ABSTRACT:
A changeable display includes a sheet containing a number of joined frames, each having a display on opposite sides. The sheet is wound on a pair of take-up rollers having parallel axes separated by one frame. A separate idler roller for each take-up roller is arranged so a nip is formed between each idler roller and its associated take-up roller. A motor-clutch arrangement selectively drives one of the take-up roller to transfer the sheet between the take-up rollers. Each idler roller is urged toward the periphery of the wound material on its associated take-up roller while the sheet is being transferred between the take-up rollers to maintain a constant separation nip between each idler roller and the periphery of the sheet on each take-up roller. A housing for the sheet, rollers and motor-clutch pair of includes a pair of windows on opposite sides of the sheet. The windows lie parallel and in close proximity with the sheet so light is not substantially reflected between the windows and the sheet and are mounted on pivoting panels. A bumper pad on one window urges against one side of the sheet when the panels are closed. The housing includes light diffusing, translucent surfaces through which light from lamps inside of the housing that simultaneously illuminate the opposite sides of the sheet propagates. The frames are secured together by a wire extending beyond an edge of the sheet of the last frame at each sheet end. The extending wire portion activates a microswitch to prevent winding the sheet off the take-up rollers.

REFERENCES:
patent: 797097 (1905-08-01), Chapman
patent: 1024955 (1912-04-01), Thomsen
patent: 1065337 (1913-06-01), Borroughs
patent: 1076222 (1913-10-01), Moscovitz
patent: 1578039 (1926-03-01), Kelly
patent: 1768409 (1930-06-01), Kuczorra
patent: 1918298 (1933-07-01), Taylor
patent: 2328055 (1943-08-01), Clough
patent: 2517414 (1950-04-01), Pratt et al.
patent: 2935806 (1960-05-01), Young
patent: 3065907 (1962-11-01), Thomas
patent: 3255541 (1966-06-01), Bettcher
patent: 3364604 (1968-01-01), Donaldson et al.
patent: 3510973 (1970-05-01), Mazzocco
patent: 3616554 (1971-11-01), Singer et al.
patent: 3726031 (1973-04-01), Singer

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

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

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

Rate now

     

Profile ID: LFUS-PAI-O-1639443

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.