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专利名称：Top roll for drafting textile fibers发明人：Kenneth R. Grant申请号：US07/9838申请日：19921201公开号：US05267932A公开日：19931207
摘要：A top roll for use in drafting textile fibers includes a disposable cartridge C ateach end each containing sealed ball bearings and a spacer between the bearings so as tobe maintained in an assembled relation and positioned upon reduced end portions of atop roll shaft by the end screw D.
申请人：PROGRESSIVE EQUIPMENT, INC.
代理人：Ralph Bailey
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