Operating mechanism for a swing mechanism valve

Details Operating mechanism for a swing mechanism valve Operating mechanism for a swing mechanism valve

1981-09-08

1983-09-13

Spar, Robert J.

Material or article handling

Vertically swinging load support

Shovel or fork type

414687, 91176, 91210, E02F 332

Patent

active

044039050

ABSTRACT:
An improved hydraulic swing mechanism for a material handling implement, such as a backhoe, includes a multi-position, hydraulic sequencing valve for directing the flow of hydraulic fluid to hydraulic motors which rotate the swing tower and boom of the implement. A unique valve operating mechanism is provided for selectively repositioning the sequencing valve as the boom and swing tower are rotated in order to improve the operating characteristics of the swing mechanism. The valve operating mechanism includes a pivoted, frame mounted actuating arm connected with the sequencing valve by a lost-motion linkage, and flexible linkages connecting the actuating arm with the hydraulic motors of the swing mechanism.

REFERENCES:
patent: 3047171 (1962-07-01), Long
patent: 3630120 (1971-12-01), Carlson et al.
patent: 3757642 (1973-09-01), Schuermann
patent: 3872985 (1975-03-01), Short
patent: 4085855 (1978-04-01), Worback
patent: 4138928 (1979-02-01), Pilch
patent: 4341501 (1982-07-01), Maurer et al.

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