周庄八景专利名称：TUBE EXPANSION TOOL 发明人：HINERMAN R,US
申请号：US3783674D什么如泰山
申请日：19710920
公开号：US3783674A
公开日：
存钱利息
友谊的名句
初一上册计算题>现代名著
19740108
专利内容由知识产权出版社提供
摘要：A hand tool for expanding thin-wall metal tubes such as the inlet and outlet tubes of vehicle heater radiators. A pair of cylindrical shank members are joined together at a generally right angle. The free ends of the shank members are formed with a plurality of tapered flat surfaces terminating in an elongated tip. The surfaces form sharp corners at their junctions extending along the tapered ends, which corners expand a damaged tube when either of the tapered ends is rotated and moved downwardly within a tube having a diameter equal to the inrted shank diameter. The other shank member functions as a handle for rotating the inrted shank member within a tube being expanded.
创业交流申请人：HINERMAN R,US
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