Blade control system for motor graders

Details Blade control system for motor graders Blade control system for motor graders

1994-07-13

1996-03-05

Melius, Terry Lee

Earth working

Scraper between widely spaced front and rear ground supports

172666, 172789, 172793, E02F 376

Patent

active

054958989

ABSTRACT:
A highlift adjusting mechanism for the blade of a motor grader uses the traditional twin highlift cylinders connected to the motor grader by means of bell cranks. A rigid link member joins lower ends of the bell cranks and includes a number of locking ports therein. The link member is pivotally connected to the bell cranks by a specialized arrangement which additionally defines a further locking port. In the preferred form, the link member is secured to the bell cranks by pin members which include a cavity in one end thereof sized to receive the locking pin. With this arrangement, the bell cranks can be maintained closer to the frame of the grader and improved visibility is achieved.

REFERENCES:
patent: 3618671 (1971-11-01), Chantland
patent: 3739861 (1973-06-01), Johnson et al.
patent: 3986563 (1976-10-01), Stubben
patent: 4071091 (1978-01-01), Morris
patent: 4246972 (1981-01-01), Halmosi et al.
patent: 4279312 (1981-07-01), Pyle
patent: 4340119 (1982-07-01), MacDonald
patent: 4637751 (1987-01-01), Vollmer

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