초록 ▼

A horizontally adjustable armrest for a chair including a vertically slideable element having a base, a lower horizontal slide element movable longitudinally, an upper horizontal slide element movable laterally and an armrest cover. The lower horizontal slide element includes a longitudinally extend

A horizontally adjustable armrest for a chair including a vertically slideable element having a base, a lower horizontal slide element movable longitudinally, an upper horizontal slide element movable laterally and an armrest cover. The lower horizontal slide element includes a longitudinally extending slot with a shoulder. Two fasteners extend through the slot and are fastened to the base. Under the fasteners' heads are springs and washers to bias the lower slide element into frictional engagement with the base. The upper surface of the lower horizontal slide element includes a pair of guide rails which are received in recesses formed in the bottom surface of the upper horizontal slide element. The upper slide element includes two slots extending perpendicular to the slot of the lower slide element. Fasteners, springs and washers are used to bias the upper slide element into frictional engagement with the lower slide element. An armrest cover fits over the horizontal slide elements.

대표청구항 ▼

The invention claimed is: 1. A horizontally adjustable armrest assembly for a chair comprising: a mounting member connected to said chair, said mounting member having an upper base; a first horizontal slide element slidably mounted to said upper base, said first slide element being adjustably slida

The invention claimed is: 1. A horizontally adjustable armrest assembly for a chair comprising: a mounting member connected to said chair, said mounting member having an upper base; a first horizontal slide element slidably mounted to said upper base, said first slide element being adjustably slidable in a first direction with respect to said upper base, and said first slide element being restrained after adjustment with respect to said upper base by frictional engagement between said upper base and said first slide element; a second horizontal slide element for slidably mounting to said first slide element and slidable in a second direction substantially perpendicular to said first direction, said second slide element restrained after adjustment with respect to said first slide element by frictional engagement between said second slide element and said first slide element; said first slide element including a slot formed therein directed along said first direction; said upper base including a fastener receiving opening therein and including a fastener received in said slot of said first slide element and in said fastener receiving opening of said upper base for adjustably mounting said first slide element to said upper base; a guide for directing sliding movement of said first slide element with respect to said upper base; said guide mounted to said fastener and engaging walls of said slot of said first slide element; said fastener comprising a stem and a head; and said guide comprising a washer through which said stem of said fastener extends, a side rim of said washer engaging said walls of said slot. 2. The adjustable armrest of claim 1, further comprising: a biasing element disposed between said head of said fastener and said washer. 3. A horizontally adjustable armrest assembly for a chair comprising: a mounting member connected to said chair, said mounting member having an upper base: a first horizontal slide element slidably mounted to said upper base, said first slide element being slidable in a first direction with respect to said upper base, said first slide element maintaining after adjustment a substantially fixed position with respect to said upper base by frictional engagement; a second slide element slidably mounted to said first slide element in a second direction substantially perpendicular to said first direction; said first slide element including a slot formed therein directed along said first direction; said upper base comprising two fastener receiving openings therein and including two fasteners received in said slot of said first slide element and in said fastener receiving openings for adjustably mounting said first slide element to said upper base; a guide for directing sliding movement of said first slide element with respect to said upper base; said guide mounted to said fastener and engaging walls of said slot of said first slide element; and said fastener comprising a stem and a head and said guide comprising a washer through which said stem of said fastener extends, a side rim of washer engaging the walls of said slot. 4. The adjustable armrest of claim 3, further comprising: a biasing element disposed between said head of said fastener and said washer. 5. A horizontally adjustable armrest assembly for a chair comprising: a mounting member connected to said chair, said mounting member having an upper base; a first slide element mounted to said upper base, said first slide element being adjustably slidable in a first direction with respect to said upper base, and said first slide element being frictionally engaged to said upper base; a second slide element mounted to said first slide element and being adjustably slidable in a second direction generally perpendicular to said first direction, said second slide element being frictionally engaged to said first slide element; said first slide element including an elongated slot formed therein parallel to said first direction; said upper base including a fastener receiving opening therein and including a fastener received in said slot of said first slide element and in said fastener receiving opening of said upper base for frictionally engaging said first slide element to said upper base; and a guide structure for directing sliding movement of said first slide element with respect to said upper base; said guide structure to engage walls around said slot of said first slide element. 6. The adjustable armrest of claim 5 wherein: said fastener comprises a stem portion and a head portion, said guide structure comprises a washer through which said stem of said fastener extends, and said washer has a peripheral rim. 7. The adjustable armrest of claim 6, further comprising: a biasing element disposed between said head of said fastener and said washer. 8. A horizontally adjustable armrest assembly for a chair comprising: a mounting member adapted to be connected to the chair, the mounting member having an upper base, said upper base including first and second guide rails extending in a first direction, and first and second spaced apart fastener receiving openings; a first elongated slide structure mounted to said upper base and extending in the first direction, said first slide structure including a first elongated slot aligning with said first and second fastener receiving openings of said upper base and extending to a distance greater than the distance between said first and said second fastener receiving openings of said upper base, a lower surface for engaging said first and said second guide rails of said upper base, and an upper surface having first and second guide rails extending in a second direction generally perpendicular to the first direction, and third and fourth spaced apart fastener receiving openings; a second elongated slide structure mounted to said first slide structure and extending in the first direction, said second slide structure including second and third elongated slots, said second slot being aligned with said first fastener receiving opening of said upper surface of said first slide structure and said third slot being aligned with said second fastener receiving opening of said upper surface of said first slide structure, said second and third slots extending in a second direction perpendicular to the first direction, and a lower surface having first and second elongated recesses for engaging said first and second guide rails of said upper surface of said first slide structure; first and second fasteners positioned in said first slot of said first slide structure and in said first and second fastener receiving openings of said upper base; first and second springs, said first spring being mounted around said first fastener and said second spring being mounted around said second fastener, said first and second springs to bias said first slide structure against said upper base; third and fourth fasteners, said third fastener being positioned in said second slot of said second slide structure and in said third fastener receiving opening of said first slide structure and said fourth fastener being positioned in said third slot of said second slide structure and in said fourth fastener receiving opening of said first slide structure; and third and fourth springs, said third spring being mounted around said third fastener and said fourth spring being mounted around said fourth fastener, said third and fourth springs to bias said second slide structure against said first slide structure. 9. The armrest of claim 8 wherein: each of said first, second and third slots is surrounded by a shoulder. 10. The armrest of claim 9 including: first, second, third and fourth washers wherein each washer is movable along a respective shoulder, said first washer being mounted around said first fastener, said second washer being mounted around said second fastener, said third washer being mounted around said third fastener, and said fourth washer being mounted around said fourth fastener. 11. The armrest of claim 10 including: first and second spaced apart spacer projections formed on said upper surface of said first slide structure, said spacer projections being spaced from said first and second guide rails of said upper surface of said first slide structure.