Bouncer seat and drive mechanism therefor

In an infant seat assembly wherein a resilient frame has a base with a cross member at its rear, front supporting legs extending upwardly from a front portion of said base to merge into an upper back portion, and a fabric cover extending between said legs and back portion whereby to support an infant in a reclined position thereon, the combination therewith comprising:

• a lift mechanism drivingly connected to said cross member including means for vertically reciprocating said cross member to impart a vertical oscillatory motion to said back portion, means for regulating the extent of vertical displacement of said back portion, and regulating means for tuning the frequency of said vertical reciprocating means to match the frequency of oscillatory motion of said back portion.

In an infant support assembly including a frame, a displacement mechanism for imparting oscillatory motion to said frame comprising a variable speed motor drive, a speed reduction mechanism associated with said motor drive, a crank arm rotatable in response to activation of said motor drive, means for regulating the extent of vertical displacement of said frame, a pivotal lift arm being reciprocal in response to rotation of said crank, and regulating means for adjusting the frequency of reciprocal motion of said lift arm.

In an infant seat assembly wherein a resilient frame has a base with a cross member at its rear, front supporting legs extending upwardly from a front portion of said base to merge into an upper back portion, and a fabric cover extending between said legs and back portion whereby to support an infant in a reclined position thereon, the combination therewith comprising:

• a lift mechanism drivingly connected to said cross member including means for vertically reciprocating said cross member to impart a vertical oscillatory motion to said back portion, and regulating means for tuning the frequency of said vertical reciprocating means to match the frequency of oscillatory motion of said back portion wherein said reciprocating means includes a motor drive and a crank arm rotatable in response to activation of said motor drive to impart vertical reciprocal motion to said cross member, a pivotal lift arm having a pivotal end at an opposite end connected to said crank and biasing means cooperating with said motor drive in lifting said lift arm, and a slide member adjustably interconnecting said lift arm and said cross member.

In an infant seat assembly wherein a resilient frame has a base with a cross member at its rear, front supporting legs extending upwardly from a front portion of said base to merge into an upper back portion, and a fabric cover extending between said legs and back portion whereby to support an infant in a reclined position thereon, the combination therewith comprising:

• a lift mechanism drivingly connected to said cross member including means for vertically reciprocating said cross member to impart a vertical oscillatory motion to said back portion, and regulating means for tuning the frequency of said vertical reciprocating means to match the frequency of oscillatory motion of said back portion wherein said lift mechanism includes an elongated housing having vertical slots at opposite ends thereof, said cross member being in the form of an elongated tubular member extending through said vertical slots to undergo vertical reciprocating motion in response to activation of said motor drive.