Wagon having incorporated support jacks

Details Wagon having incorporated support jacks Wagon having incorporated support jacks

1977-06-21

1980-01-01

Hafer, Robert A.

Tool driving or impacting

With indicating or signaling means

180 95, E21C 1102

Patent

active

041811828

ABSTRACT:
A drill wagon has oscillatable crawler frames. Each crawler frame has a hydraulic ground engaging support jack at one end.

REFERENCES:
patent: 3181623 (1965-05-01), Lindgren
patent: 3189103 (1965-06-01), Attebo et al.
patent: 3225849 (1965-12-01), La Casse
patent: 3289779 (1966-12-01), Feucht
patent: 3412812 (1968-11-01), Kindsfater
patent: 3493058 (1970-02-01), Zitko
patent: 3722601 (1973-03-01), Klein et al.

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