十二生肖由来
专利名称：Accumulating conveyor 发明人：Robert Krammer, decead 申请号：US05/942660
2的分解>司仪开场白申请日：19780915
阿尔山>先兆流产治疗
公开号：US04301914A
八宝饭的做法和配料
公开日：
19811124
专利内容由知识产权出版社提供
摘要：Disclod are powered roller, accumulating conveyors incorporating improved friction wheel drive means for transmitting driving forces to any given zone of the conveyor, independently of all other zones, from a single powered endless belt in a first embodiment and from a powered chain in cond, third and fourth embodiments. In the first embodiment a pressure roller is pivoted longitudinally and downwardly to a position in which it is wedged between the lower cour of a belt and a friction wheel to transmit drive forces from the former to the latter and thus to the load carrying rollers; and in the cond, third and fourth embodiments a chain driven pressure roller is pivoted longitudinally and downwardly into driving engagement with a friction wheel to transmit drive forces from the pressure roller to the load carrying rollers in a zone, a plurality of load carrying rollers in each zone being drivingly interconnected by a parate chain system in the cond and third embodiments, and being drivingly engaged by a V-belt in the fourth embodiment. In all four embodiments the pressure roller is mounted for pivotal movement about an axis eccentric with respect to the axis of rotation of the friction wheel it engages, and the parts are arranged so that the pressure roller engages the friction wheel at a highly oblique angle to give a wedging action capable of transmitting relatively high drive forces. There is also disclod a modified drive means年终个人述职报告
for u with endless belts which maintains constant belt length regardless of the number of conveyor zones being powered at one time.
申请人：SANDARD CONVEYOR COMPANY
代理机构：Harness, Dickey & Pierce
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