Highchair with adjustable seat

A highchair comprising:

• a seat having arm portions,
• a removable tray having an upper and a lower surface, said lower surface being adapted to be positioned on said arm portions,
• latch means mounted on said lower surface for movement toward and away from said arm portions,
• actuator means mounted on said lower surface adjacent to a front edge of said tray for manual engagement, said actuator means being mounted for longitudinal movement substantially parallel to said lower surface of said tray,
• transfer means mounted for pivotal movement on said lower side in a centrally located portion of said tray,
• first linkage means connecting said actuator means and said transfer means,
• second linkage means connecting said latch means and said transfer means,
• engagement means on said arm portions for engaging said latch means whereby engagement of said latch means with said engagement means defines a plurality of fixed positions for said tray,
• wherein manual operation of said actuator means, comprising pulling said actuator means forwardly in a rear to front direction relative to said tray, causes said second linkage means to push laterally outwardly on said latch means such that said latch means disengages from said engagement means for adjustment of said tray relative to said arm portions and further forward movement of said actuator means releases said latch means from engagement with said arm portions for removal of said tray from engagement with said arm portions, and
• wherein said latch means is manually operable to disengage from said engagement means and a lost motion mechanism is defined between said actuator and said latch means such that said actuator is adapted to remain in a stationary position in response to manual movement of said latch means.

A highchair comprising:

• a seat defining a seat back,
• a pair of front leg elements and a pair of rear leg elements,
• first and second upper members located on laterally opposite sides of said seat, each said upper member being attached to a front leg element and to a rear leg element and wherein said front and rear leg elements extend in diverging relationship from respective ones of said upper members,
• first and second elongated slots defined along said seat back, said elongated slots extending substantially parallel to said front leg elements and defining openings facing laterally outwardly toward said upper members,
• first and second tangs mounted to said upper members, each said tang extending laterally inwardly toward and engaging within respective ones of said openings defined by said slots,
• first and second collars mounted to a front portion of said seat and engaged around respective ones of said front leg elements for sliding movement with respect to said front leg elements, each said collar including a stud, and
• wherein each said front leg element includes means defining a plurality of detent locations along the length of said front leg elements for receiving said studs to define predetermined vertical adjustment positions for said seat, and said first and second slots each being formed with a length sufficient to continuously retain and cooperate with said first and second tangs during movement of said collars between said detent locations.

A highchair comprising:

• a seat defining a front portion and a seat back,
• an upwardly extending elongated front leg member,
• an upper member attached to an upper end of said front leg member and extending rearwardly from said front leg member,
• an elongated first rear guide element defined along said seat back and located rearwardly of said front leg member, said first rear guide element extending substantially parallel to said front leg member,
• a second rear guide element mounted to said upper member and spaced rearwardly of said front leg member, said second rear guide element extending laterally inwardly toward and engaging with said first rear guide element in continuous sliding engagement to define a rear guide path for said seat,
• a front guide element mounted to said front portion of said seat and engaged with said front leg member for continuous sliding engagement along said front leg member to define a front guide path for said seat, and
• wherein said front and rear guide paths are located in front to rear spaced relation to each other to support and guide said seat for vertical height adjustment of said seat.