Self-righting training cup

Details Self-righting training cup Self-righting training cup

1979-12-26

1981-12-01

Lowrance, George E.

Receptacles

Outlet or junction box type

Sectional receptacle

220 904, 215 1R, A47G 1922

Patent

active

043031706

ABSTRACT:
A self-righting training cup comprises a lower hemispherical portion having a flat to define the cup bottom and an upper cylindrical portion tangent with the lower portion, the diameter of the lower portion having a ratio to the effective liquid containing height of the upper portion of at least 4.

REFERENCES:
patent: 441155 (1890-11-01), Gross
patent: 2601767 (1952-07-01), Wall
patent: 3549044 (1970-12-01), Lerner
patent: 3966077 (1976-06-01), Jardine

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