Land vehicles – Wheeled – Attachment
Patent
1979-08-24
1981-06-30
Nase, Jeffrey V.
Land vehicles
Wheeled
Attachment
212189, 280767, 414694, B66C 2378
Patent
active
042759021
ABSTRACT:
The crane or excavator includes a revolving superstructure which is supported on a carrier frame for rotation about a vertical axis by means of a turntable. The superstructure carries a linear hydraulic motor which includes a downwardly directed, normally retracted, piston rod having a support pad at its lower end. A secondary ground engaging frame positioned endwise of the carrier frame includes an upper reaction surface. The main frame includes a side positioned shelf also having an upper reaction surface. Both reaction surfaces are within the swing path of the linear hydraulic motor. In operation, the linear hydraulic motor is positioned over one of the reaction surfaces and the piston rod is extended into a load transferring contact with the reaction surface. The linear hydraulic motor may be automatically extended into bracing contact with a reaction surface simultaneously with delivery of hydraulic fluid to a hydraulic component carried by the superstructure, the actuation of which creates a need for bracing action.
REFERENCES:
patent: 2346900 (1944-04-01), Black
patent: 3109542 (1963-11-01), Noll et al.
patent: 3552546 (1971-01-01), Rath
Barnard Delbert J.
Nase Jeffrey V.
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