Tree pruners

Details Tree pruners Tree pruners

2007-07-25

2010-02-02

Self, Shelley (Department: 3725)

Woodworking

Special-work machine

Tree felling

C030S246000, C030S249000

Reexamination Certificate

active

07654293

ABSTRACT:
A tree pruner includes a rod and a fixed part is fixed to the rod and an arm has a first end pivotably connected to the fixed part. A spring is connected between the fixed part and a second end of the arm. A movable part has an end fixed to the arm and a mediate portion of the movable part is pivotably connected to the fixed part. A positioning seat is movably positioned on the rod and a stationary pulley is connected to the positioning seat. A movable pulley is connected to the arm and a rope reeves through the stationary pulley and the movable pulley. When pulling the rope, the arm is pivoted to move the movable part toward the fixed part to prune branches when the arm is pivoted.

REFERENCES:
patent: 5745998 (1998-05-01), Le et al.
patent: 6038773 (2000-03-01), Le et al.
patent: 6178644 (2001-01-01), Le et al.
patent: 6526664 (2003-03-01), Cech
patent: 2007/0119057 (2007-05-01), Chen

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