Title: Device for supporting bulldozer blade

Abstract: A device for supporting a bulldozer blade comprising a frame, a subframe pivotally connected to the frame for limited relative movement about a vertical axis, first hydraulic cylinder means for rotating the subframe about the vertical axis, a blade provided in front of the subframe, a universal joint connecting one side of the subframe to one side of the blade, a pair of links connecting the other side of the subframe to the other side of the blade through spherical joints and a second hydraulic cylinder means for the rotation of the blade about the universal joint substantially in a vertical plane. The construction permits the blade to be held firmly while the smooth tilting of the blade is insured.

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Inventors: Matsuzawa, Kunihiko (Sagamihara, JA)

Application Number: 645453
Filing Date: 1975-12-30
Publication_date: 1977-03-22
Assignee: Mitsubishi Jukogyo Kabushiki Kaisha (Tokyo, JA)
Primary Class(es): 172/821
Other Classes:
US Patent Ref:

2224725	Dec, 1940	Felt	172/804.
2950550	Aug, 1960	French	172/804.
3648782	Mar, 1972	Mazzarins	172/804.
3822751	Jul, 1974	Waterman	172/804.

Other Refs:
Primary Examiner: Marlo, George J.
Assistant Examiner:
Attorney: Cushman, Darby & Cushman