The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 08, 1994
Filed:
Feb. 25, 1993
Arthur L Torrence, Newtown, CT (US);
Mechtronics Corporation, Stamford, CT (US);
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.