Tailgate lift assist dampening device

Details Tailgate lift assist dampening device Tailgate lift assist dampening device

Filed on

2007-10-30

Date issued

2007-10-30

Examiner

Dayoan, D. Glenn (Department: 3612)

Patent Class

Land vehicles: bodies and tops

SubClass

Bodies

SubSubClass

End gates

Other Related Categories

C049S322000, C049S181000

Type

Reexamination Certificate

Status

active

Patent number

11261558

Description

ABSTRACT:
A tailgate counterbalancing hinge assembly includes a linear torque rod, a first end assembly and a second end assembly secured to the torque rod. A first end assembly pivotally supports the tailgate while permitting a torque rod end to be rigidly coupled to the tailgate for movement with the tailgate about a pivot axis. A second end assembly also pivotally supports the tailgate and permits the other end of the torque rod to be rigidly connected to the vehicle body. The first end assembly includes a bushing and split pivot body rotatably mounted within the bushing that creates increasing friction between the split pivot body and the bushing as the torque rod is twisted due to the tailgate being opened. The increasing friction creates a progressively increasing braking or dampening effect, which slows the free fall of the tailgate as it is opened.

REFERENCES:
patent: 5358301 (1994-10-01), Konchan et al.
patent: 6769729 (2004-08-01), Bruford et al.
patent: 6793263 (2004-09-01), Bruford et al.
patent: 6796592 (2004-09-01), Austin

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