Tree climbing device

Details Tree climbing device Tree climbing device

1994-02-18

1995-08-08

Raduazo, Henry E.

Plant husbandry

Miscellaneous

Modified earth's surface, e.g., sod, turf, reinforced

B27L 100

Patent

active

054387930

ABSTRACT:
A device for climbing a vertical member such as a tree and pole, has an upper engagement member and a lower engagement member which can be opened or closed to respectively engage an upper and lower portion of the vertical member. At least one extension/retraction member is connected to the upper and lower engagement members. The extension/retraction member extends or retracts to vary the distance between the upper and lower engagement members. During the extension and retraction of the extension/retraction member either the upper or lower engagement member is open and the other engagement member is closed. The device may also include a controller and power source. The center of mass of upper and lower engagement members and the extension/retraction members substantially coincides with the location of the vertical member.

REFERENCES:
patent: 2477922 (1949-08-01), Emery
patent: 2534595 (1950-12-01), Hamilton
patent: 2541767 (1951-02-01), Jones
patent: 2612724 (1952-10-01), Llewellyn
patent: 4735244 (1988-04-01), Kacer
patent: 5056258 (1991-10-01), Quinn

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