Material or article handling – Elevator or hoist and loading or unloading means therefor – Comprising means enabling additional movement of carrier or...
Reexamination Certificate
2007-10-02
2007-10-02
Bollinger, David H. (Department: 3652)
Material or article handling
Elevator or hoist and loading or unloading means therefor
Comprising means enabling additional movement of carrier or...
C414S495000, C414S661000, C254S00200C, C254S00300C, C254S00500R, C254S011000, C254S0930VA, C187S243000, C187S244000
Reexamination Certificate
active
10760580
ABSTRACT:
A roller mechanism for transporting loads over a surface, the roller mechanism including a body, at least one roller assembly that permits the body to move in at least one translational direction, the roller assembly being rotatably connected to the body, and a lifting mechanism attached to the body such that the body is selectively rotatable relative to the lifting mechanism, wherein the lifting mechanism can be operated to lift the roller assemblies out of contact with the surface.
REFERENCES:
patent: 1486784 (1924-03-01), Mingo
patent: 1997327 (1935-04-01), Warshaw
patent: 3881426 (1975-05-01), Long
patent: 4200424 (1980-04-01), Gerkey et al.
patent: 5151004 (1992-09-01), Johnson
patent: 2581634 (1986-11-01), None
Hill David A.
Kinsberg Jeffrey A.
Bollinger David H.
Hilman, Incorporated
Lowe M. S
Oliff & Berridg,e PLC
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