Jack assembly
AssigneeHorizon Global Americas Inc.
InventorsKawa-She Quoen Okerlund, Frank Drake
Life of this patent
Estimating the term…
Abstract
A jack assembly is shown and describe. The jack assembly may include a first tube having first and second end portions and a central portion between the first and second end portions, and a second tube positioned within the first tube and movable with respect to the first tube. The jack assembly may also include an expanded portion on the first tube, the expanded portion having a larger inner diameter than an inner diameter of the central portion, and a bushing attached to the expanded portion, where the bushing generally prevents contact between the first and second tubes.
Claims17
A jack assembly comprising:
- a first tube;
- a second tube operatively movable with respect to said first tube;
- and
- a caster assembly connected to said second tube, said caster assembly comprising:
- a pin;
- and
- a vertical load supporting member comprising a surface with at least one engagement member and a cage member circumscribing at least a portion of said pin, said engagement member engaged with said pin allowing relative rotation between said pin and said vertical load supporting member;
- a bushing positioned between said cage member and said pin;
- aligned openings in said second tube, cage member, and bushing:
- and
- a fastener engaged with said openings, wherein said opening in said bushing generally prevents said fastener from disengaging from said bushing.
A jack assembly comprising:
- a first tube;
- a second tube operatively movable with respect to said first tube;
- a caster assembly connected to said second tube, said caster assembly comprising:
- a pin having a top surface and a sidewall;
- a cage member having a surface providing vertical load support to said top surface of said pin, wherein said pin is rotatable relative to said cage member;
- an antifriction device positioned between said top surface of said pin and said surface of said cage member.
Dependencies are inferred from the claim text.