Baby jumper

Claim 2

A collapsible baby jumper comprising a base frame, a seat frame disposed above said base frame and movable to and from upright and collapsed positions, a diagonal brace structure arranged on each side of said seat frame, each said brace structure comprising a diagonal main brace member pivotally connected at one end to said seat frame and each including a pivot pin extending therefrom between its ends, pivot means secured to each side of said base frame, providing a support surface for supporting one said pivot pin and providing thereby a pivot axis for said brace member on said support surface, and a tension spring secured between said base frame and the opposite end of each one of said brace members on each side of said base frame, each spring being adapted and arranged to resist downward movement of said seat frame on said brace members about said pivot axes, said pivot means constructed so as to permit said pins to be lifted off said support surfaces to pivot said brace members about second pivot axes located at their ends secured to said springs to collapse said seat, at least one of said pivot means including guide structure for limiting movement of said pin to and from said support surface.

Claim 3

The baby jumper of claim 1 wherein said guide structure comprises a slot generally in the shape of an inverted J, of which the short side terminates in a surface defining said support surface to maintain said seat in its upright position, and said long side terminates in a surface defining a second support surface for supporting said pin with said seat in its collapsed position.

Claim 4

The baby jumper of claim 2 wherein said J-shaped slot includes a restricted opening between said short side and said long side barely sized to pass said pivot pin therethrough to inhibit accidental collapse of said jumper.

Claim 5

The baby jumper of claim 3 wherein said slot has a vertical upward extension of its short side permitting reciprocating vertical movement of said pin in said extension during normal jumping reciprocation of said seat frame.

Claim 6

The baby jumper of claim 1 wherein said springs are arranged to provide a rigid link pivotally connecting the said brace member to said base frame when said pivot pin is off said pivot surface.

Claim 7

The baby jumper of claim 1 wherein said guide structure comprises a slot sized to receive said pivot pin slidably therein, said slot shaped to provide said pivot support surface, a second support surface for supporting said pin with said seat in its collapsed position and a tortuous passage between said surfaces.

Claim 8

The baby jumper of claim 1 wherein each said brace structure includes an auxiliary rigid brace member pivotally connected to said seat frame and said base frame and generally parallel to the main brace member, constructed and arranged so that the pivot axes of the auxiliary brace member connections and of the main brace member connection to the seat frame together with the pivot axis of said pin when the seat frame is in upright position are at the corners of a vertical parallelogram.

Claim 9

The baby jumper of claim 1 wherein said seat frame includes a stop member projecting from each side thereof, each stop member arranged to engage one of said brace members and thereby to limit the rotation of said seat upwardly about said pivot axes.

Claim 10

A baby jumper comprising a base frame, a seat, a seat frame disposed above said base frame, a diagonal base structure arranged on each side of said seat frame, each said base structure comprising a brace member pivotally secured at one end to said seat frame, pivot means secured to said seat frame, on each side of said seat, for pivotally supporting each said brace member between its ends providing a pivot axis for said member, and a tension spring secured between said base frame and the opposite end of each one of said brace members on each side oF said base frame, each spring being adapted and arranged to resist downward movement of said seat frame about said pivot axes, said base frame comprising spaced apart support members adjacent the rear of and one on each side of said seat frame, for providing spaced-apart independent support for said seat, parallel horizontal flexible members extending from vertical members at their rearward end, toward the front of said seat, and forward support structure comprising spaced-apart, vertical support legs, supporting the forward ends of said horizontal flexible members, and a connecting member connecting the bottoms of said vertical support legs across the front of said seat frame, said pivot means being secured to said horizontal flexible members, and each said spring being connected to said forward support structure.

Claim 11

A baby jumper comprising a base frame, a seat, a seat frame disposed above said base frame, a diagonal base structure arranged on each side of said seat frame, each said base structure comprising a brace member pivotally secured at one end to said seat frame, pivot means secured to said seat frame, on each side of said seat, for pivotally supporting each said brace member between its ends providing a pivot axis for said member, and a tension spring secured between said base frame and the opposite end of each one of said brace members on each side oF said base frame, each spring being adapted and arranged to resist downward movement of said seat frame about said pivot axes, said base frame comprising spaced apart support members adjacent the rear of and one on each side of said seat frame, for providing spaced-apart independent support for said seat, parallel horizontal flexible members extending from vertical members at their rearward end, toward the front of said seat, and forward support structure comprising spaced-apart, vertical support legs, supporting the forward ends of said horizontal flexible members, and a connecting member connecting the bottoms of said vertical support legs across the front of said seat frame, said pivot means being secured to said horizontal flexible members, and each said spring being connected to said forward support structure.

Claim 12

The baby jumper of claim 9 wherein each said spring extends vertically at least partway along one of said vertical legs of said forward support structure and is secured to one of said legs, said pivot means are located near the forward ends of said horizontal flexible members, and said brace members include portions extending between said pivot means and said spring means closely adjacent said horizontal flexible members.