Fire escape – ladder – or scaffold – Pole or strand grasping-type climber – Foot- or leg-attachable
Reexamination Certificate
2005-04-26
2009-06-30
Chin-Shue, Alvin C (Department: 3634)
Fire escape, ladder, or scaffold
Pole or strand grasping-type climber
Foot- or leg-attachable
Reexamination Certificate
active
07552798
ABSTRACT:
The present invention provides a column climbing device for climbing structural steel columns having flanges and the like. The column climbing device includes a platform member having a toe portion and a foot portion, the toe portion of the platform member including a first interior surface and a second interior surface together defining a substantially-rectangular notch open to one side of the toe portion of the platform member, the first interior surface and the second interior surface in a fixed parallel orientation with respect to one another, wherein the substantially-rectangular notch is configured to frictionally engage a flange of a column. The column climbing device also includes one or more attachment mechanisms attached to the foot portion of the platform member for securing the platform member to a foot of a user.
REFERENCES:
patent: 730580 (1903-06-01), Stanford
patent: 1260856 (1918-03-01), Bates
patent: 1312399 (1919-08-01), Heywood
patent: 2021433 (1935-11-01), Shaw
patent: 2082553 (1937-06-01), Shaw et al.
patent: 2268148 (1941-12-01), Hawkes
patent: 3004622 (1961-10-01), Ringer
patent: 3019852 (1962-02-01), Soderberg
patent: 3111194 (1963-11-01), Erwin
patent: 3561563 (1971-02-01), Harsh
patent: 4368801 (1983-01-01), Lewis
patent: 4969620 (1990-11-01), Plummer
patent: D324130 (1992-02-01), Matsumoto et al.
patent: 5249644 (1993-10-01), Amacker
patent: 5853067 (1998-12-01), Cutler
patent: 2624026 (1989-06-01), None
Swierski Robert John
Swierski Thomas Joseph
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