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Patent Searching and Data


Title:
REVOLVING TYPE CLAMP
Document Type and Number:
WIPO Patent Application WO/2005/113191
Kind Code:
A1
Abstract:
A cylindrical housing (2) is provided with a cylinder hole (17) and a rod hole (18) in this order with the holes facing up. A piston (19) inserted in the cylinder hole (17) is connected to a clamp rod (5). Disposed on the upper side of the piston (19) is a lock chamber (20) for supplying/discharging pressure oil. An annular flow channel (23) is formed between the peripheral wall of the rod hole (18) and the outer peripheral surface of the clamp rod (5). A supply/discharge port (24) communicates with the upper portion of the annular flow channel (23). A throttle fitting hole (41) is concentrically disposed in the lower portion of the peripheral wall of the rod hole (18). A fitting section (42) adapted to be fitted in the fitting hole (41) in the terminal period of revolutionary rise of the clamp rod (5) is disposed in the upper portion of the piston (19). Thereby, the pressure oil in the lock chamber (20) is discharged to the supply/discharge port (24) through an annular throttle gap (G) formed between the fitting hole (41) and the fitting section (42).

Inventors:
YONEZAWA KEITARO (JP)
YOKOTA HIDEAKI (JP)
HARUNA YOSUKE (JP)
Application Number:
PCT/JP2005/007320
Publication Date:
December 01, 2005
Filing Date:
April 15, 2005
Export Citation:
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Assignee:
KOSMEK LTD (JP)
YONEZAWA KEITARO (JP)
YOKOTA HIDEAKI (JP)
HARUNA YOSUKE (JP)
International Classes:
B23Q3/06; B25B5/06; (IPC1-7): B23Q3/06
Foreign References:
JP2002187036A2002-07-02
JPS62161940U1987-10-15
JPS4941550B11974-11-09
JPS58135506U1983-09-12
Attorney, Agent or Firm:
Kaji, Yoshiyuki c/o Kaji (SUHARA & ASSOCIATES Recruit Shin Osaka Bldg., 14-22, Nishinakajima 5-chome, Yodogawa-k, Osaka-shi Osaka 11, JP)
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