Adjustable, pivotable blade for bulldozers and the like

Details Adjustable, pivotable blade for bulldozers and the like Adjustable, pivotable blade for bulldozers and the like

1989-03-28

1990-09-04

Johnson, Richard J.

Earth working

Tool forward of rear of motor vehicle

With means for moving tool laterally

172307, 172459, 172484, E02F 3815

Patent

active

049536257

ABSTRACT:
The adjustable blade apparatus (10) is adapted for use with an earth moving vehicle (12). It includes a support frame (20) which is pivotable in the vertical plane relative to the vehicle (12). A blade assembly (22) is rotatably secured to a connecting frame portion (54) of the support frame (20) by means of a turntable (26) and a swivel connection (27). The blade assembly (22) is moved relative to connecting frame (54) by hydraulic cylinders (28,30).

REFERENCES:
patent: 2312255 (1943-02-01), Lowdermilk
patent: 2961054 (1960-11-01), Green
patent: 3049822 (1962-08-01), McMullen
patent: 3061956 (1962-11-01), Braden
patent: 3226860 (1966-01-01), McGee
patent: 3720010 (1973-03-01), Coates
patent: 3726347 (1973-04-01), Hyman
patent: 4357766 (1982-11-01), Croteau
patent: 4579178 (1986-04-01), Dover
patent: 4798011 (1989-01-01), Sprinkle
patent: 4821810 (1989-04-01), Buchanan

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