Height-adjusting mechanism for arm rest of a chair

Details Height-adjusting mechanism for arm rest of a chair Height-adjusting mechanism for arm rest of a chair

1997-06-02

1998-06-16

Brown, Peter R.

Chairs and seats

Armrest

Adjustable to multiple use positions relative to bottom or back

293353, 403105, 24829731, A47C 754

Patent

active

057659206

ABSTRACT:
An improved height-adjusting mechanism for use on armrest of a chair. It includes a securing mount having a central sliding slot provided with a plurality of consecutively spaced slant retaining recesses on one side of the slot; and an adjusting member slidably engaged with the securing mount, an abutment block movably confined in a rectangular cavity of the adjusting member, a resilient plate and a positioning piece. A bolt secured to the abutment block is selectively engaged with one of the slant recesses of the securing mount when the adjusting member is moved in one way and the locking bolt can be freed of the restraint of the retaining recesses and held by the positioning piece when the abutment member first reaches the top of the securing mount and then is pushed all the way down to the bottom of the securing mount for adjustment when the adjusting member is moved in another way or upwardly.

REFERENCES:
patent: 4639039 (1987-01-01), Donovan
patent: 5588766 (1996-12-01), Loi
patent: 5620233 (1997-04-01), Corwin
patent: 5649741 (1997-07-01), Beggs

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