Low profile steerable power drive unit
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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-
Apr 7, 1992
Issued Date -
N/A
app pub date -
Oct 1, 1991
filing date -
Jun 25, 1990
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A low profile steerable power drive unit assembly (10) comprises a cylindrical frame member (22) having an annular ledge (42) extending inwardly therefrom. The ledge (42) includes a flat upper race (46), a frustoconical lower race (48) and gear teeth (82) disposed along the ring-like interface between the upper (46) and lower (48) races. A support bracket (24) is rotatably supported in the frame member (22) about a vertical axis (A) by a plurality of outwardly extending wheels (34, 36) freely rollable along the upper race (46) and the lower race (48). A motor (52) is supported in the support bracket (24) and, through a gear train, operatively engages the gear teeth (82) on the ledge (42) to rotate the support bracket (24) within the frame member (22). The support bracket (24) receives two modular power drive units in side-by-side orientation. The frame member (22) includes a subjacent mounting surface (30) which is attached directly to a floor structure (12) for supporting the assembly (10) entirely above the floor structure (12).
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