Jack bar with extendable tubes and fixturing mechanism

Details Jack bar with extendable tubes and fixturing mechanism Jack bar with extendable tubes and fixturing mechanism

2007-12-25

2007-12-25

Wilson, Lee D. (Department: 3723)

Implements or apparatus for applying pushing or pulling force

Step-by-step traveling bar

Pawl actuated

C254S100000

Reexamination Certificate

active

10906768

ABSTRACT:
A jack bar includes an outer tube, an inner tube and a positioner tube coaxially located. The positioner tube is extendable to adjust a length to the jack bar in use while enabling the jack bar to be retracted for storage. The jack bar further includes a clamp configured to receive tubes of various shapes. The clamp is further configured to prevent twisting or turning of clamped tubes.

REFERENCES:
patent: 2135080 (1938-11-01), Johnston
patent: 2646956 (1953-07-01), Cadwell et al.
patent: 4880203 (1989-11-01), Holcomb et al.
patent: 5810333 (1998-09-01), Hickerson et al.
patent: 6007259 (1999-12-01), Mori et al.
patent: 6644626 (2003-11-01), Baril
patent: 6764065 (2004-07-01), Fox

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