发明授权
- 专利标题: Air logic circuit for airfeed peck drill
- 专利标题(中): 用于空气啄钻的空气逻辑电路
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申请号: US816529申请日: 1991-12-30
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公开(公告)号: US5222844A公开(公告)日: 1993-06-29
- 发明人: James A. Maass , John F. Stewart , Joseph F. Carter
- 申请人: James A. Maass , John F. Stewart , Joseph F. Carter
- 申请人地址: TX Houston
- 专利权人: Cooper Industries, Inc.
- 当前专利权人: Cooper Industries, Inc.
- 当前专利权人地址: TX Houston
- 主分类号: B23B47/22
- IPC分类号: B23B47/22 ; B23Q5/26 ; B23Q16/00
摘要:
An improvement to an air logic circuit for an airfeed peck drill includes the insertion of an advance valve into the timer circuit. This advance valve generates a signal to actuate the timer circuit only after the drill quill has fed forward through rapid advance.
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