Power plants – Pressure fluid source and motor – Control by independently operated punch card – tape – digital...
Reexamination Certificate
2007-09-18
2007-09-18
Leslie, Michael (Department: 3745)
Power plants
Pressure fluid source and motor
Control by independently operated punch card, tape, digital...
C060S327000
Reexamination Certificate
active
11123315
ABSTRACT:
An apparatus and method for controlling a work tool on a work machine are provided. The work machine may have first and second actuators, each actuator being operable in a vibratory mode and a non-vibratory mode, and each actuator being coupled to the work tool for changing the position of the work tool. The method may include simultaneously (i) operating the first actuator in a vibratory mode, (ii) operating the second actuator in a vibratory mode, and (iii) receiving a command to change the position of the work tool. The method may further include operating the first actuator in a non-vibratory mode to change the position of the work tool while operating the second actuator in a vibratory mode to vibrate the work tool, in response to receiving the command.
REFERENCES:
patent: 5287699 (1994-02-01), Takamura et al.
patent: 5860231 (1999-01-01), Lee et al.
patent: 6725105 (2004-04-01), Francis et al.
patent: 6763661 (2004-07-01), Tabor et al.
Buckmier Jason M
Cockman Daniel A
Graham Luke E
Hoessler Gilles
Messer David L
Barnes D. James
Caterpillar Inc.
Finnegan Henderson Farabow Garrett & Dunner
Leslie Michael
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