Safety lever system in cab of excavator

Details Safety lever system in cab of excavator Safety lever system in cab of excavator

2008-07-08

2008-07-08

Fleming, Faye M. (Department: 3616)

Motor vehicles

With means for promoting safety of vehicle, its occupant or...

C180S334000

Reexamination Certificate

active

11180011

ABSTRACT:
The present invention relates to a safety lever system in a cab of an excavator, which is capable of preventing an unintended descending of a control box without the operation of the safety lever, and promoting a safer tilting of the control box through a limit means that controls the power application/short-circuit. According to the present invention, if the operator tilts the control box to get in or get out of the cab, the safety lever system shunts (i.e., short-circuit) the power of the control lever or the control box. Therefore, the possibility of malfunction of the excavator due to the miss-operation of the operator is very slim, and the control box cannot be returned to its original position unless the operator operates the safety lever again. This structural improvement of the safety lever eliminates a possibility of the malfunction of the excavator due to the operator's mistake, and markedly increases the reliability of the excavator.

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Patent Abstract of JP 09041426.
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Patent Abstract of JP 200126950.
Patent Abstract of JP 2001329572.
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