Spherical bearing for lock gate door and lock gate door...

Details Spherical bearing for lock gate door and lock gate door... Spherical bearing for lock gate door and lock gate door...

2011-03-15

2011-03-15

Mah, Chuck Y. (Department: 3677)

Miscellaneous hardware (e.g., bushing, carpet fastener, caster,

Hinge

Ball and socket

Reexamination Certificate

active

07904993

ABSTRACT:
A lock gate door (1) includes a pair of door bodies (2, 3); a pair of spherical bearings (6) for a lock gate door for rotatably supporting lower corner portions (4) of the door bodies (2, 3), respectively; and a pair of supporting portions (7) for rotatably supporting upper corner portions (5) of the door bodies (2, 3), respectively. The spherical bearing (6) includes a convex curved body (22) having a spherical surface (21) and a concave curved seat (24) having a toroidal curved surface (23) which slidably contacts the convex curved body (22), and is disposed on a downstream (16) side of a waterway (9) with respect to the supporting portion (7) in such a manner as to incline a rotational axis (C).

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