Gravity flow display device

Card – picture – or sign exhibiting – Changing exhibitor – Inscription cover

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

40409, 368 93, G09F 1900

Patent

active

043320961

ABSTRACT:
A gravity flow display device which is usable for selectively and alternatingly exhibiting two different but conceptually related displays. The device has two thin transparent walled half-hourglass compartments through which displays at their rears are visible. The device further contains non-transparent particulate matter which is capable of flowing from compartment to compartment in response to gravitational force and which is of a sufficient quantity to almost completely fill only whichever of said compartments contains it. When said non-transparent particulate matter is contained within one of the two transparent compartments, the display attached to said compartment is blocked from view.
By alternatingly reversing the comparative position of the two compartments a user can cause the particulate matter to flow from the upper compartment to the lower compartment and thus block from view the display at the rear of said lower compartment while causing the display at the rear of said upper compartment to become visible through said latter compartment.

REFERENCES:
patent: 1002227 (1911-09-01), Corson
patent: 1379642 (1921-05-01), Meeks
patent: 2745198 (1956-05-01), Nelson
patent: 3438197 (1969-04-01), Roer
patent: 3465516 (1969-09-01), Von Meyer
patent: 3692382 (1972-09-01), Cloutier
patent: 3935702 (1976-02-01), Tamada

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

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

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

Rate now

     

Profile ID: LFUS-PAI-O-1844172

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