发明名称 GROMMET TYPE FASTENER
摘要 The present invention relates generally to improvements in plastic fasteners and more particularly to the provision of novel and extremely practical one-piece plastic grommet type anchor members for accommodating the threaded shank of a screw member when positioned within a work aperture. The anchor member disclosed herein includes a head section for clampingly engaging one side of an apertured workpiece, and a shank section comprising an elongate hollow portion for accommodating a screw shank, and diametrically disposed outwardly flaring shank arms integrally connected with the entering extremity of hollow portion and having free work engaging extremities. The shank arms and the wall defining the hollow portion are laterally expandable in response to forces applied axially thereof.
申请公布号 US3701302(A) 申请公布日期 1972.10.31
申请号 USD3701302 申请日期 1971.03.29
申请人 ILLINOIS TOOL WORKS INC. 发明人 JOHN A. PESTKA;LLOYD A. ERICKSON
分类号 F16B21/02;F16B37/00;F16B37/04;(IPC1-7):F16B13/06 主分类号 F16B21/02
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