High performance air jack

Details High performance air jack High performance air jack

1985-09-30

1987-02-24

Watson, Robert C.

Implements or apparatus for applying pushing or pulling force

Hoisting truck

Platform type

B66F 300

Patent

active

046451811

ABSTRACT:
The disclosure describes an air jack with features that permit a substantial increase in performance during operation. A load engaging bracket includes a telescoping connection with rollers so that the connection will extend readily under loaded conditions without the air jack being subjected to forces that would tend to tilt it or otherwise move it. The ground-engaging member has sides that are positioned apart to define a dimension greater than the fully retracted load-engaging bracket to permit the bracket to lower between the sides thereby defining a minimum down height. An air manifold is positioned to furnish air under pressure not only for operating the air jack but for operating a number of air tools that are associated with the need for the air jack. The air jack has pockets to hold these tools when they are not being operated.

REFERENCES:
patent: 2530138 (1950-11-01), Wallace
patent: 2868501 (1959-01-01), Cloud et al.
patent: 3350063 (1967-10-01), Thurlow et al.
patent: 3582043 (1971-06-01), Tranchero
patent: 3740020 (1973-06-01), Arnes

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