发明授权
US4463957A Sealing device for rotary shaft and string-like member for defining
spiral therefor
失效
用于旋转轴的密封装置和用于限定螺旋的弦状构件
- 专利标题： Sealing device for rotary shaft and string-like member for defining spiral therefor
- 专利标题（中）： 用于旋转轴的密封装置和用于限定螺旋的弦状构件
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申请号： US279252申请日： 1981-07-01
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公开(公告)号： US4463957A公开(公告)日： 1984-08-07
- 发明人: Yataro Nagai , Yoshiro Imai
- 申请人： Yataro Nagai , Yoshiro Imai
- 申请人地址： JPX Tokyo
- 专利权人： Tanken Seiko Corp.
- 当前专利权人： Tanken Seiko Corp.
- 当前专利权人地址： JPX Tokyo
- 优先权： JPX55-94346[U] 19800704; JPX55-94347[U]JPX 19800704
- 主分类号： F16J15/34
- IPC分类号： F16J15/34 ; F16J15/40
摘要：
A sealing device for a rotary shaft is provided with a spiral member having a determined pitch and a determined thickness on a rotating portion and/or a stationary portion corresponding to the rotating portion. The spiral member may be provided via a shaft sleeve, or may be directly attached on a rotating portion and/or a stationary portion corresponding to the rotating portion. The spiral member may be in advance shaped in a spiral form, or may be a string-like flexible member which may be shaped in a spiral form.
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