Positioning Apparatus and Positioning System Having the Same
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United States of America Patent
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-
N/A
Issued Date -
Nov 15, 2007
app pub date -
Aug 8, 2005
filing date -
Aug 20, 2004
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
An annular plug (12) to be inserted into a cast hole (11) of a work (M) is projected upward from a housing (3). In a peripheral wall (13) of the annular plug (12), through holes (14) extending radially are formed at intervals circumferentially. A ball (15) is inserted into each of the through holes (14). An operating rod (18) is inserted into a cylindrical hole (17) of the annular plug (12). In an outer peripheral surface of an upper end portion of the operating rod (18), accommodating grooves (19) extending vertically are formed at intervals circumferentially corresponding to the balls (15). Guide surfaces (24, 24, 24) are formed between the adjacent accommodating grooves (19, 19). These guide surfaces (24) are fitted into the cylindrical hole (17) so as to be prevented from moving radially and allowed to move axially.
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