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US 6,199,809 B1Granted
Support device for keyboard
OwnerMay Chung Hunginventor
Life of this patent
Estimating the term…
Abstract
A keyboard support device includes a frame and a link pivotally secured to a base at a pin and a shaft respectively, and a support pivotally secured to the frame. A bolt is detachably engaged through the support and the frame and the link for securing the support to the frame and the link before the support is adjusted to the required height and angular position relative to the frame. The bolt has a head secured to the support and is prevented from rotating relative to the support. A spring may elevate the support relative to the base to the required height.
Claims8
A keyboard support device comprising:
- a base,
- a frame including a first end pivotally secured to said base at a pivot pin, and including a second end having a curved groove formed therein,
- a support pivotally secured to said frame at a pivot axle and including a curved groove formed therein and aligned with said curved groove of said frame,
- a link including a first end pivotally secured to said base at a pivot shaft and including a second end, and
- a fastener device engaged through said curved grooves of said support and of said frame and engaged through said second end of said link for releasably securing said support to said frame and said link, said fastener device including a bolt engaged through said curved grooves of said support and of said frame and engaged through said second end of said link and including a knob threaded to said bolt for releasably securing said support to said frame and said link, said fastener device including a bar secured between said pivot axle and said bolt, said bar including a non-circular cavity formed therein, said bolt including a non-circular latch formed thereon and engaged with said cavity for securing said bolt to said bar and for preventing said bolt from rotating relative to said support.
2 more elements
A keyboard support device comprising:
- a base,
- a frame including a first end pivotally secured to said base at a pivot pin, and including a second end having a curved groove formed therein,
- a support pivotally secured to said frame at a pivot axle and including a curved groove formed therein and aligned with said curved groove of said frame,
- a link including a first end pivotally secured to said base at a pivot shaft and including a second end,
- a fastener device engaged through said curved grooves of said support and of said frame and engaged through said second end of said link for releasably securing said support to said frame and said link,
- means for biasing said frame and said link to rotate relative to said pivot pin and said pivot shaft respectively and to elevate said support relative to said base, said biasing means being engaged between said pivot shaft and said frame, said biasing means including a barrel, and a tube slidably received in said barrel, and a spring engaged between said barrel and said tube for biasing said tube outward of said barrel.
3 more elements
Dependencies are inferred from the claim text.