Title:
PRESSURE EQUALIZATION STRUCTURE AND MOTOR IMPROVEMENT FOR FLUID-IMMERSED SELF-ROTATING DISPLAYS
Document Type and Number:
WIPO Patent Application WO/2016/105561
Kind Code:
A8
Abstract:
A self-rotating display device includes and outer light transmissive container (402) containing a light transmissive fluid (406) and an body (404) containing an electric motor (421) for rotating the body with respect to the outer container. The body also carries an amount of the fluid (430a) contacting the fluid in the outer container through a pressure equalizing gap (431) in the body which forms a fluid pathway between the inner cavity of the body and the inner chamber of the outer container. The fluid pathway forms self-regulating pressure relief structure which accommodates slight pressure variations in the fluid due to climactic conditions for example. A specialized reduced footprint fluid-immersible electric motor having separate field and compass magnets, which do not rotate relative to each other, helps eliminate magnetic cogging. The device can be manufactured according to a method which eliminates the necessity of a fill hole in the body.
Inventors:
FRENCH WILLIAM W (US)
Application Number:
PCT/US2015/000453
Publication Date:
August 10, 2017
Filing Date:
December 24, 2015
Export Citation:
Assignee:
TURTLETECH DESIGN INC (US)
International Classes:
B63G8/22
Attorney, Agent or Firm:
BUCHACA, John, D. (US)
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