Home| FAQ Search:Advanced|Person|Company| Type|Class Login
Quick search:
Patent number:
Patent Date:
first    back  next  last
US Patent: 7,780,102
Feed Roller Drive for Wood Chipper
Patentee:
David S. Majkrzak - West Fargo, ND

USPTO Classifications:
144/162.1, 144/176, 144/218, 241/278.1, 241/92

Tool Categories:
woodworking machines : woodworking machine parts or accessories : woodworking machine stockfeeding mechanisms

Assignees:
Crary Industries Inc. - West Fargo, ND

Manufacturer:
Not known to have been produced

Witnesses:
Unknown

Patent Dates:
Applied: Mar. 28, 2007
Granted: Aug. 24, 2010

Patent Pictures:
USPTO pdf tiff
Google Patents
Report data errors or omissions
Description:
Abstract

The present disclosure relates to a wood chipper that has a feed roller driven by a hydraulic motor. Hydraulic fluid under pressure is provided to the motor through a two-stage pump, providing separate flows of fluid under pressure. The flows of the pump stages are combined for normal operation of the chipper. A bypass that will bypass the flow from one pump stage when the pressure of the fluid under pressure driving the motor exceeds a pre-selected level from increased load on the feed roller is provided. When the bypass is open the feed roller is slowed to reduce the feed rate of material into the chipper, and when the feed roller loads reduce, the flows will again be combined to speed up the feed roller.

Copyright © 2002-2019 - DATAMP