Land vehicles – Wheeled – Stable vehicles – handle-propelled
Patent
1994-03-16
1996-02-06
Boehler, Ann Marie
Land vehicles
Wheeled
Stable vehicles, handle-propelled
280 7911, 312109, 312290, D 3298, D34 20, B62B 310
Patent
active
054891060
ABSTRACT:
A cart for maintaining items, which are used in a cleanroom, at a predetermined cleanliness level. The cart includes a cabinet having an internal cavity and opposed first and second internal walls. The cart further includes a shelf affixed horizontally within the cavity to form top and lower compartments within the cabinet. In addition, a lower horizontal track is affixed to the cabinet above the top compartment. A lower door is slidably affixed within the lower track. Additionally, the cart includes an upper horizontal track affixed to the cabinet above the lower track and an upper door slidably affixed within the upper track, wherein the upper and lower doors are movable in a horizontal direction above the top compartment. The top compartment is substantially isolated from contamination when the upper door contacts the first wall and the lower door contacts the second wall or when the upper door contacts the second wall and the lower door contacts the first wall.
REFERENCES:
patent: D5087 (1871-07-01), Seldis
patent: D239490 (1976-04-01), Pellegrini
patent: D291037 (1987-07-01), Handler
patent: 1259167 (1918-03-01), Ticheli
patent: 1764612 (1930-06-01), Dickinson
patent: 2430635 (1947-11-01), Glass
patent: 2778704 (1957-01-01), Joachim
patent: 4108515 (1978-08-01), Johnson
patent: 5205630 (1993-04-01), Welch et al.
patent: 5306028 (1994-04-01), Pike
Engelking Steven
Magallanez Carol
Boehler Ann Marie
Miller Jerry A.
Musacchio Pasquale
Sony Corporation
Sony Electronic Inc.
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