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公开(公告)号:US2876002A
公开(公告)日:1959-03-03
申请号:US52603555
申请日:1955-08-02
申请人: PURDY FREDERICK A
发明人: PURDY FREDERICK A
IPC分类号: E05F15/20
CPC分类号: E05F15/78
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公开(公告)号:US3510982A
公开(公告)日:1970-05-12
申请号:US3510982D
申请日:1968-09-26
申请人: PURDY FREDERICK A
发明人: PURDY FREDERICK A
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公开(公告)号:US2850088A
公开(公告)日:1958-09-02
申请号:US28716752
申请日:1952-05-10
申请人: PURDY FREDERICK A
发明人: PURDY FREDERICK A
IPC分类号: E06B9/08
CPC分类号: E06B9/08
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公开(公告)号:US2127376A
公开(公告)日:1938-08-16
申请号:US67631133
申请日:1933-06-17
申请人: PURDY FREDERICK A
发明人: PURDY FREDERICK A
IPC分类号: E05F13/04
CPC分类号: E05F13/04
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公开(公告)号:US3481387A
公开(公告)日:1969-12-02
申请号:US3481387D
申请日:1968-01-18
申请人: PURDY FREDERICK A
发明人: PURDY FREDERICK A
CPC分类号: E05F15/686 , E05Y2900/106
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公开(公告)号:US3060361A
公开(公告)日:1962-10-23
申请号:US8484861
申请日:1961-01-25
申请人: PURDY FREDERICK A
发明人: PURDY FREDERICK A
IPC分类号: E05F15/16
CPC分类号: E05F15/686 , E05Y2900/106
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公开(公告)号:US2926727A
公开(公告)日:1960-03-01
申请号:US58991056
申请日:1956-06-07
申请人: PURDY FREDERICK A
发明人: PURDY FREDERICK A
IPC分类号: E05F15/16
CPC分类号: E05F15/686 , E05Y2900/106
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公开(公告)号:US2758836A
公开(公告)日:1956-08-14
申请号:US29085952
申请日:1952-05-31
申请人: PURDY FREDERICK A
发明人: PURDY FREDERICK A
IPC分类号: E05F15/16
CPC分类号: E05F15/40 , E05F15/00 , E05F15/686 , E05Y2400/354 , E05Y2400/51 , E05Y2400/59 , E05Y2400/61 , E05Y2400/822 , E05Y2900/106
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公开(公告)号:US3590529A
公开(公告)日:1971-07-06
申请号:US3590529D
申请日:1969-03-18
申请人: PURDY FREDERICK A
发明人: PURDY FREDERICK A
CPC分类号: E05F15/686 , E05Y2900/106 , Y10T74/18688
摘要: An Up-Returner for an obstructed downwardly moving overhead garage door; a Circuit Breaker, two-directional. I. At an operator for driving an overhead garage door open or closed; a door, moving downward toward closed position and encountering an obstruction, is automatically reversed in direction to fully reopen. II. Integral with the parts of assembly I, is a circuit breaker to shut off an overtime-running motor by breaking the electricsupply circuit, whether motor''s direction of rotation is clockwise or counterclockwise. III. Improvements over prior designs.
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公开(公告)号:US3508631A
公开(公告)日:1970-04-28
申请号:US3508631D
申请日:1968-12-31
申请人: PURDY FREDERICK A
发明人: PURDY FREDERICK A
CPC分类号: E05F15/603 , E05F15/686 , E05F15/78 , E05Y2900/106
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