Recirculating snowfall-type display

Details Recirculating snowfall-type display Recirculating snowfall-type display

1993-02-25

1994-03-08

Muir, David N.

Card, picture, or sign exhibiting

Display device with free article movement

Snowfall simulator

446267, 446179, 446485, C09F 1900, A63H 352, A63H 3340, A63H 3326

Patent

active

052916740

ABSTRACT:
A display formed of two colorless, transparent plastic cylinders mounted concentrically with a vertical axis upon a base. The space between the two cylinders forms a tank which is filled with liquid and some plastic snowflakes having a slightly greater specific gravity than the liquid. An object to be displayed is positioned within the inner cylinder and, so, is not in contact with the liquid. The object and the liquid are illuminated by a light within the base. A motor operates a pump having an uncased spiral rotor projecting vertically downwardly into the liquid. Rotation of the pump causes a diffuse upward flow of the liquid and the snowflakes in the vicinity of the pump. Though this causes the snowflakes to move upwardly in a gentle and diffuse manner, this motion isn't particularly noticed by an observer. When the snowflakes reach the top of the liquid, they are diffused sidewardly and begin dropping, creating a snowfall effect.

REFERENCES:
patent: 2341955 (1944-02-01), Smith
patent: 2991574 (1961-07-01), Trame
patent: 3071888 (1963-01-01), Knott
patent: 4170035 (1979-10-01), Walker
patent: 4643693 (1987-02-01), Rubinstein
patent: 4769638 (1988-09-01), Woolfolk
patent: 4928412 (1990-05-01), Nishiyama
patent: 5121926 (1992-07-01), Pfaender
patent: 5160565 (1992-11-01), Chazalen et al.
patent: 5200239 (1993-04-01), Chen

Affiliated with

Also associated with

Rating

Recirculating snowfall-type 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 Recirculating snowfall-type display, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Recirculating snowfall-type display will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-147519