Power plants – Pressure fluid source and motor – Condition responsive control of pump or motor displacement
Reexamination Certificate
2006-05-30
2006-05-30
Look, Edward K. (Department: 3745)
Power plants
Pressure fluid source and motor
Condition responsive control of pump or motor displacement
C060S452000
Reexamination Certificate
active
07051525
ABSTRACT:
A method and an apparatus for monitoring the operation of a percussion device, which percussion device comprises a percussion piston and a pressure channel for supplying pressure medium to the percussion device for moving the percussion piston. The method and the apparatus measure pressure pulsation of the pressure medium acting in the pressure channel, which pressure pulsation is depicted as a pressure curve. From pressure pulsation are determined parameters depicting the operating state of the percussion device and the operating state of the percussion device is determined on the basis of the parameters. In addition, an arrangement for controlling the operation of the percussion device on the basis of the operating state of the percussion device.
REFERENCES:
patent: 4699223 (1987-10-01), Norén
patent: 4800797 (1989-01-01), Comarmond
patent: 5481875 (1996-01-01), Takamura et al.
patent: 6112832 (2000-09-01), Muuttonen et al.
patent: 6202411 (2001-03-01), Yamashita
patent: 6510902 (2003-01-01), Prokop et al.
patent: 0 112 810 (1984-07-01), None
patent: 0112810 (1984-07-01), None
patent: 0 825 330 (1998-02-01), None
patent: 0825330 (1998-02-01), None
patent: 1 055 489 (2000-11-01), None
patent: 07-174647 (1995-07-01), None
patent: 09-287379 (1997-11-01), None
patent: 11-333757 (1999-12-01), None
patent: 11333757 (1999-12-01), None
Kemppainen Timo
Keskiniva Markku
Uitto Vesa
Drinker Biddle & Reath LLP
Kershteyn Igor
Look Edward K.
Sandvik Tamrock Oy
LandOfFree
Method and apparatus for monitoring operation of percussion... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method and apparatus for monitoring operation of percussion..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for monitoring operation of percussion... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3549875