Hydraulic control system for tree cutting saw

Details Hydraulic control system for tree cutting saw Hydraulic control system for tree cutting saw

2006-01-17

2006-01-17

Banks, Derris H. (Department: 3725)

Woodworking

Special-work machine

Combined

C144S034100, C144S382000, C144S024120, C060S431000, C060S449000

Reexamination Certificate

active

06986368

ABSTRACT:
A hydraulic circuit for a tree-cutting machine having a feed mechanism powered by hydraulic fluid at the output of a hydraulic motor. The hydraulic motor may comprise a variable-displacement motor. The hydraulic circuit may comprise elements which provide an anti-stall mode, wherein the feed mechanism is operated to withdraw the cutting element upon pressure at an input port of the hydraulic motor exceeding a threshold.

REFERENCES:
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patent: 4531366 (1985-07-01), Moriya et al.
patent: 4735049 (1988-04-01), Ketonen
patent: 5203388 (1993-04-01), Bowling
patent: 5293914 (1994-03-01), Hudson
patent: 5528843 (1996-06-01), Rocke
patent: 5588474 (1996-12-01), Egging
patent: 6408906 (2002-06-01), Moon et al.
patent: 6431231 (2002-08-01), Braaten et al.

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