Self-aligning slide pads for telescopic boom

Details Self-aligning slide pads for telescopic boom Self-aligning slide pads for telescopic boom

1977-08-15

1979-04-10

Frankfort, Charles E.

Cutlery

212 55, F16C 1700, B66C 2300

Patent

active

041485319

ABSTRACT:
A telescopic boom consists of a plurality of generally rectangular boom sections nested with each outwardly extending section inside of the next adjacent inward section. The boom is provided with self-aligning slide pad mounts at both the front and rear reaction points. At the front reaction point, this mounting includes elongated slide pads supported to stay with the outside inward boom section and situated directly under the side plates of the outwardly extending inside boom section. At the rear reaction points, the mounting includes elongated slide pads mounted to move with, and to be immediately adjacent to, outer surfaces of the side plates of the outwardly extending, inside boom section. Both the front reaction slide pads and the rear reaction slide pads are mounted to pivot on a horizontal axis with respect to the boom section with which they move, and the pivotal mountings for these slide pads are situated between the adjacent, spaced apart side plates of the nested boom sections. Adjustable shimmed slide pads are provided at the top and bottom sides of the boom sections adjacent each front reaction point to provide side support when the boom is subjected to side loads. The rear reaction slide pads provide similar support at the rear reaction points.

REFERENCES:
patent: 3620579 (1971-11-01), Brown et al.
patent: 3669280 (1972-06-01), Garrett et al.
patent: 3690742 (1972-09-01), Sung
patent: 3719403 (1973-03-01), Sung
patent: 3972571 (1976-08-01), Benkowski

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