Timber felling device

Details Timber felling device Timber felling device

1975-02-10

1976-03-23

Smith, Al Lawrence

Implements or apparatus for applying pushing or pulling force

Fluid pressure

Vehicle attached

144 34A, B66F 324, A01G 2308

Patent

active

039456102

ABSTRACT:
A portable timber felling device for controlled felling of a tree including a hydraulic ram unit positionable in a backcut of the tree for extension therein to fell the tree. A hydraulic power unit includes a pump and control valves to generate and regulate the hydraulic power required to operate the hydraulic ram unit. A hose means of a considerable length interlinks the power and ram units for the transmission of the generated hydraulic power. A remote control unit with a manually operable control member controls at least one of the valves on the power unit via a communication means which places the operator of the remote control at a substantial distance from the power unit and the tree to be felled. The entire structure is portable and a battery provides the electrical power for remote control.

REFERENCES:
patent: 2343937 (1944-03-01), Smith
patent: 2690323 (1954-09-01), Evenson
patent: 2764249 (1956-09-01), Paolucci
patent: 2792670 (1957-05-01), Haynes
patent: 2919106 (1959-12-01), Mieux et al.
patent: 3471949 (1969-10-01), Cargile
patent: 3622124 (1971-11-01), Sidles
patent: 3730481 (1973-05-01), Ekonen
patent: 3749363 (1973-07-01), Hauser
patent: 3773292 (1973-11-01), Thiermann
patent: 3819153 (1974-06-01), Hurst

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