发明名称 Stone trap seal
摘要 In a combine used for harvesting and threshing crop material from a field and equipped with a system for ejecting stones and other foreign objects from an infeed housing through a trapdoor there is provided an improved seal for the stone trapdoor and the opposing sidewalls of the infeed housing.
申请公布号 US4288969(A) 申请公布日期 1981.09.15
申请号 US19800135841 申请日期 1980.03.31
申请人 SPERRY CORPORATION 发明人 UNDERHILL, KENNETH R.
分类号 A01F12/16;(IPC1-7):A01F12/10 主分类号 A01F12/16
代理机构 代理人
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