Chairs and seats – Combined
Reexamination Certificate
2005-10-25
2005-10-25
Nelson, Jr., Milton (Department: 3636)
Chairs and seats
Combined
C297S452180, C005S083100, C005S085100
Reexamination Certificate
active
06957859
ABSTRACT:
A chair for transporting a person from a first location to a second location along a rail in response to an input provided to a control for a hoist and motorized conveyor by the person. The chair includes first and second seat portions that are pivotally attached to a frame and connected by a linkage arrangement to a lever arm. The hoist moves the chair toward a fixed surface while surrounding the person and as the person moves the lever arm from a first position, the first and second seats portions move from a vertical position to horizontal position under the person. Thereafter, the lever is locked in a fixed position and the hoist activated to raise the chair to allow the chair to be moved by the motorized conveyor along the rail.
REFERENCES:
patent: 669450 (1901-03-01), Stephens
patent: 1709153 (1929-04-01), Pownall
patent: 2688410 (1954-09-01), Nelson
patent: 3351959 (1967-11-01), Turpin
patent: 3596612 (1971-08-01), Sowder
patent: 3814022 (1974-06-01), Smith
patent: 4125908 (1978-11-01), Vail et al.
patent: 4393529 (1983-07-01), Britz
patent: 5379468 (1995-01-01), Cassidy et al.
patent: 5456655 (1995-10-01), Morris
patent: 5539941 (1996-07-01), Fuller
Jr. Milton Nelson
McCormick Jr. Leo H
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