초록 ▼

An armrest construction for chairs includes an armrest support having a lower end constructed for attachment to a chair, an upper end, and a mounting block attached to the upper end. A pivot block is pivoted to the mounting block at a main pivot, the pivot block having an upwardly-extending follower

An armrest construction for chairs includes an armrest support having a lower end constructed for attachment to a chair, an upper end, and a mounting block attached to the upper end. A pivot block is pivoted to the mounting block at a main pivot, the pivot block having an upwardly-extending follower. First and second gears are each pivoted to the pivot block, the gears having intermeshing teeth at an inner end such that rotation of the first gear causes the second gear to simultaneously rotate in an opposite direction, the first and second gears further having outer ends. A support plate having pivot/slide members engages the outer ends of the first and second gears, and further has a guide operably engaging the follower to guide lateral movement of the support plate along a predetermined path. The support plate is rotatable about the main pivot to adjust the angular orientation of the armrest construction and is laterally movable along continuously parallel positions to adjust a width of the armrest construction relative to the chair. The armrest construction is mounted on a vertically-adjustable armrest support member for optimal adjustability.

대표청구항 ▼

[ The invention claimed is:] [1.] An armrest construction for chairs comprising:an armrest support including a lower end constructed for attachment to a chair, an upper end, and a mounting block attached to the upper end;a pivot block pivotally mounted on the mounting block at a main pivot;first and

[ The invention claimed is:] [1.] An armrest construction for chairs comprising:an armrest support including a lower end constructed for attachment to a chair, an upper end, and a mounting block attached to the upper end;a pivot block pivotally mounted on the mounting block at a main pivot;first and second gears each pivotally mounted on the pivot block, the gears having intermeshing teeth at inner ends adjacent to each other such that rotation of the first gear causes the second gear to simultaneously rotate in an opposite direction, the first and second gears further having outer ends on opposite edges from the inner ends; anda support plate having pivot/slide members engaging the outer ends of the first and second gears, and wherein:a selected one of said pivot block and said support plate includes a follower, and the other of said pivot block and said support plate includes a guide operably engaging the follower to guide lateral movement of the support plate along a predetermined path, the support plate being rotatable about the main pivot to adjust the angular orientation of the armrest construction and being laterally movable along continuously parallel positions to adjust a width of the armrest construction relative to the chair.