Reduced mass high speed doffer column with improved shaft...

Details Reduced mass high speed doffer column with improved shaft... Reduced mass high speed doffer column with improved shaft...

2010-10-06

2011-11-15

Fabian-Kovacs, Arpad (Department: 3671)

Harvesters

Cotton

Pickers

Reexamination Certificate

active

08056312

ABSTRACT:
A light-weight upright shaft (14) supports cotton harvester doffers (12). An internally threaded mounting end (36) receives a bolt (38) which is stretchable to a greater degree than the shaft to provide a reliable shaft preload condition that prevents the doffers from spinning relative to the shaft. The shaft may be hollow and may have a diameter greater than conventional shafts to reduce weight and increase the stiffness and thereby increase critical speed. The preload structure does not require a nut and has increased thread engagement.

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