Supports: cabinet structure – Show-case type – Refrigerator
Patent
1996-08-27
1997-09-02
Brown, Peter R.
Supports: cabinet structure
Show-case type
Refrigerator
62249, A47B 8100
Patent
active
056623941
ABSTRACT:
A low-temperature showcase comprises an upper case including at least two doors, an intermediate plate provided with an air inlet and an air outlet, a bottom plate having an opening, an air duct defined by the intermediate plate and the bottom plate, a lower case including a cavity in which an evaporator and a fan are installed, and a thrust ball bearing. The evaporator and the fan generate a cold air flow which is circulated along the air duct and into an interior of the upper case. The thrust ball bearing includes a ring-shaped upper member provided With an annular groove, a ring-shaped lower member provided with a plurality of recesses formed along an arbitrary circle corresponding to the annular groove and a plurality of balls fitted into both the recesses and the groove. The upper and the lower members are fixed to an under surface of the bottom plate of the upper case around the opening and a top surface of the lower case around the cavity, respectively, the balls for rotatably bearing the upper member, thereby allowing the upper member and hence the upper case to be rotatable.
REFERENCES:
patent: 2030780 (1936-02-01), Bicknell
patent: 3171473 (1965-03-01), Lawler
patent: 4258966 (1981-03-01), Grubb
patent: 4953362 (1990-09-01), Shoji et al.
patent: 5277486 (1994-01-01), Bustos
patent: 5549373 (1996-08-01), Bustos
Anderson Gerald A.
Brown Peter R.
Daewoo Electronics Co. Ltd.
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