Slim pantograph jack with bearing spacer

Details Slim pantograph jack with bearing spacer Slim pantograph jack with bearing spacer

2005-10-25

2005-10-25

Wilson, Lee D (Department: 3723)

Implements or apparatus for applying pushing or pulling force

Single throw lever

Mechanically actuated

C254S122000

Reexamination Certificate

active

06957803

ABSTRACT:
A pantograph jack includes a base, a load rest, first and second lower arms each pivotably coupled at a first end to the base, and first and second upper arms each pivotably coupled at a first end to the load rest. Second ends of the first lower and upper arms are pivotably coupled at a first joint. Second ends of the second lower and upper arms are pivotably coupled at a second joint. A screw extends between the joints and operably moves the joints toward and away from each other upon rotation of the screw to raise and lower the load rest. A bearing spacer includes a flange forming a bearing engagement surface at a first end and a second end engaging the second joint. The drive screw has an abutment facing the bearing engagement surface. A bearing is located between the bearing engagement surface and the abutment.

REFERENCES:
patent: 5529286 (1996-06-01), Kikuchi
patent: 6161816 (2000-12-01), Kikuchi
patent: 6799749 (2004-10-01), Voegeli et al.

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