Tool driving or impacting – Processes
Reexamination Certificate
2006-01-04
2010-11-23
Truong, Thanh K. (Department: 3721)
Tool driving or impacting
Processes
C173S013000, C173S091000
Reexamination Certificate
active
07836969
ABSTRACT:
The invention relates to a method for controlling a pressure fluid operated percussion device comprising a working chamber for pressure fluid and in the working chamber a transmission piston installed movably with respect thereto so as to enable a tool installed in the percussion device to be pressed against a material to be broken in order to generate a stress pulse, and to a percussion device.The method comprises adjusting the length of the stress pulse by adjusting the time during which pressure influences the transmission piston. The percussion device comprises an adjustment element and adjustment means for adjusting the influence time of the pressure of the pressure fluid being fed via a control valve and influencing the transmission piston.
REFERENCES:
patent: 3670826 (1972-06-01), Hanson et al.
patent: 4023626 (1977-05-01), Salmi et al.
patent: 4699223 (1987-10-01), Noren
patent: 5117921 (1992-06-01), Bartels et al.
patent: 5129466 (1992-07-01), Bartels et al.
patent: 5844133 (1998-12-01), Goto et al.
patent: 6505689 (2003-01-01), Poysti et al.
patent: 6742605 (2004-06-01), Martini
patent: 6799641 (2004-10-01), Lyon et al.
patent: 7013996 (2006-03-01), Keskiniva et al.
patent: 2006/0032649 (2006-02-01), Keskiniva et al.
patent: 2006/0175091 (2006-08-01), Koskimaki et al.
patent: 2003-0261 (2004-09-01), None
patent: 2003-1036 (2005-02-01), None
patent: 2190147 (1987-11-01), None
patent: 814716 (1981-03-01), None
patent: WO2004/073933 (2004-09-01), None
Ahola Erkki
Esko Mauri
Helin Aimo
Keskiniva Markku
Mäki Jorma
Chukwurah Nathaniel
Drinker Biddle & Reath LLP
Sandvik Mining and Construction OY
Truong Thanh K.
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