发明名称 Force-adjustable and disconnectible connector for orthodontic headgear
摘要 A connector for orthodontic headgear includes a casing for a helical compression spring one end of which engages the head of a rod extending through the spring and through a sleeve which engages the other end of the spring. The sleeve is supported in an aperture in the end of the casing and is adjustable axially relative to the casing for adjusting the spring force. The connection is disconnectible by providing a metal clip securable to a headcap having legs engageable in grooves in the casing.
申请公布号 US4553934(A) 申请公布日期 1985.11.19
申请号 US19840606073 申请日期 1984.05.01
申请人 ARMSTRONG, MACLAY M. 发明人 ARMSTRONG, MACLAY M.;HOUSER, STEVEN A.
分类号 A61C7/06;(IPC1-7):A61C7/00 主分类号 A61C7/06
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