Playing pool

Details Playing pool Playing pool

2005-05-03

2005-05-03

Huson, Gregory L. (Department: 3751)

Baths, closets, sinks, and spittoons

Pool type

Construction details

C004S585000, C472S126000

Reexamination Certificate

active

06886189

ABSTRACT:
A playing pool includes an upper ring, a middle ring and a bottom sheet made from a flexible and water-proof plastic sheet by thermal fusion. The upper ring is a rolled hollow ring, and the middle ring and the bottom sheet are made from a sheet. The middle ring has an upper side and a lower side to connect the upper ring and the bottom sheet by thermal fusion to contain water. The middle ring is formed from an integrated and elongated plastic sheet and formed with a plurality of trapezoids that have a narrower upper side, a wider lower side and slant lateral sides to mate different perimeters of the upper ring and the bottom sheet. Every two neighboring trapezoids are bordered by a wedge type slit notch directing vertically from the upper side to the lower side thereof. The two lateral sides of two neighboring trapezoids are connected by thermal fusion to form the middle ring to contain water. The integrated middle ring can enhance the resistant force against water pressure.

REFERENCES:
patent: 2505845 (1950-05-01), Alvarez
patent: 2529872 (1950-11-01), Hasselquist
patent: 2551673 (1951-05-01), Hasselquist
patent: 2633172 (1953-03-01), Treiber
patent: 2714726 (1955-08-01), Hasselquist
patent: 2854049 (1958-09-01), Spencer
patent: 3001207 (1961-09-01), Nail
patent: 3631544 (1972-01-01), Tytel

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