Land vehicles – Wheeled – Attachment
Reexamination Certificate
2005-04-12
2005-04-12
Ellis, Christopher P. (Department: 3618)
Land vehicles
Wheeled
Attachment
C074S527000, C137S636100, C180S324000
Reexamination Certificate
active
06877773
ABSTRACT:
Automatic and simultaneous retraction of a pair of stabilizer legs for a backhoe loader machine is beneficial for the operator (not shown). Instead of retracting the stabilizer legs by manually holding a pair of control levers continuously in a retract position, the operator (not shown) may simply move the control levers to an auto-retract position. The movement of the control levers in such a manner activates a control switch in connection with each of the control levers. The control switches, in turn, activate a timer relay that activates a solenoid detent operative with each control lever. Once the solenoid detents are in an activated state, the operator (not shown) may relinquish contact with the control levers. The solenoid detents will retain the control levers in the auto-retract position via electro-magnetic forces. The timer relay controls the solenoid detents so that the control levers are retained in the auto-retract position for a preselected time to fully retract the stabilizer legs from any one of a plurality of extended positions.
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Hercules Hydraulics Master Component Catalog, Jan. 2000, pp. 392-393.*
U.S. Appl. No. 09/314,728, filed May 18, 1999.
Bibb John S.
Kiger Shane W.
McGuire Kenneth J.
Barnes D. J.
Bottorff Christopher
Caterpillar Inc
Charlton D. L.
Ellis Christopher P.
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