Height adjustment mechanism for a back rest or an arm rest of a

Details Height adjustment mechanism for a back rest or an arm rest of a Height adjustment mechanism for a back rest or an arm rest of a

1997-06-06

1999-07-13

Nelson, Jr., Milton

Chairs and seats

Movable back

29741136, B60N 202

Patent

active

059216301

ABSTRACT:
A chair has a mechanism for adjusting height of a component, i.e. a back rest or an arm rest of the chair. The mechanism comprises a vertically extending rail, a rail grip and a rotatable control member having an orbital portion which orbits about the axis of rotation of the control member. The control member rotates to orbit the orbital portion between a release position where the rail and rail grip are slideable relative to one another to adjust the height of the chair component and a locking position where the orbital portion of the control member pushes the rail and rail grip into locking engagement with one another preventing height adjustment of the chair component.

REFERENCES:
patent: 4674798 (1987-06-01), Oeth et al.
patent: 5382077 (1995-01-01), Stumpf et al.
patent: 5405189 (1995-04-01), Stumpf
patent: 5551754 (1996-09-01), Neumueller

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