Arm chair mounted keyboard support apparatus

A chair and tray apparatus for supporting an item, comprising:

• a chair having chair arms with upper and lower chair arm surfaces and having a chair seat spaced apart from said lower chair arm surface;
• an item support deck for supporting an item;
• and a deck support frame fastened to said support deck, said deck support frame comprising chair arm engaging means for removably securing said apparatus to the arms of said chair, and comprising substantially parallel and laterally spaced apart frame arms removably secured to said chair arms by said chair arm engaging means, each said frame arm including a proximal arm segment and a distal arm segment which includes said chair arm engaging means;
• said chair arm engaging means comprising first and second arm straddles, each of said first and second arm straddles comprising a substantially U-shaped member including two spaced-apart arm straddle tines defining a set of tines for fitting around one of the chair arms, including a clutch pivot joint at which the given said arm straddle connects to the corresponding said frame arm, such that as said frame arms pivot downwardly with their own weight and the weight of said support deck, said tines rotate into abutting contact with the upper and lower chair arm surfaces, thereby supporting said frame arms and said support deck;
• wherein said distal arm segments each comprise a radially protruding distal segment radial stem having a longitudinal radial stem spline said proximal arm segments each comprise a radially protruding stem receiving tube containing a longitudinal radial stem spline channel for receiving said radial stem spline, each said proximal arm segment further comprising a proximal segment slide ring portion secured at the segment tube proximal end;
• wherein said support deck comprises a deck mounting assembly including for each said frame arm a deck engaging structure at the arm proximal end with an external clutch tube having longitudinal and an external clutch tube spline slat which removably fits into longitudinal radial spline channel in said external clutch tube, a corresponding arm proximal segment slide ring portion fitted around said external clutch tube, said slide ring portion having internal axial spline groove each receiving an external clutch tube spline slat, such that said slide ring portion is longitudinally slidable along said external clutch tube and not rotatable about said external clutch tube;
• and an internal clutch tube extending within each one of said external clutch tubes and including an outward clutch segment having outward clutch segment engaging means, said outward clutch segment fitting into one of said external clutch tubes having an inward clutch segment having inward clutch segment engaging means engaging said outward clutch segment engaging means of the corresponding said internal clutch tube, said inward and outward clutch segment engaging means locking said external and internal clutch tubes against axial rotation relative to each other when mutually engaged, and permitting axial rotation relative to each other when disengaged.

A chair and tray apparatus for supporting an item, comprising:

• a chair having chair arms with upper and lower chair arm surfaces and having a chair seat spaced apart from said lower chair arm surface;
• an item support deck for supporting an item;
• a telescoping deck panel, wherein said support deck additionally comprises a deck lower surface and said deck lower surface comprises a pair of guide tracks slidably retaining said telescoping deck panel;
• such that said deck panel is slidable outwardly beyond said support deck for extending said support deck and for slidable underneath said support deck for compact storage;
• and a deck support frame fastened to said support deck, said deck support frame comprising chair arm engaging means for removably securing said apparatus to the arms of said chair, and comprising substantially parallel and laterally spaced apart frame arms removably secured to said chair arms by said chair arm engaging means, each said frame arm including a proximal arm segment and a distal arm segment which includes said chair arm engaging means;
• said chair arm engaging means comprising first and second arm straddles, each of said first and second arm straddles comprising a substantially U-shaped member including two spaced-apart arm straddle tines defining a set of tines for fitting around one of the chair arms, including a clutch pivot joint at which the given said arm straddle connects to the corresponding said frame arm, such that as said frame arms pivot downwardly with their own weight and the weight of said support deck, said tines rotate into abutting contact with the upper and lower chair arm surfaces, thereby supporting said frame arms and said support deck.