Height adjusting device for baby walkers

Details Height adjusting device for baby walkers Height adjusting device for baby walkers

1997-10-22

1998-10-13

Donnelly, Jerome

Exercise devices

Involving user translation or physical simulation thereof

Occupant propelled support frame having movement...

247 5, 280647, A62B 706, A47D 1304

Patent

active

058205276

ABSTRACT:
A baby walker includes a chassis with casters mounted to an underside thereof and an upper frame having a seat mounted thereon. The upper frame further includes two racks mounted to an underside thereof. Two pairs of cross-hinged first beams and second beams are mounted between the chassis and the upper frame. Two engaging members are respectively, slidably mounted to the racks. A connecting beam which interconnects upper ends of the first beams has two ends respectively connected to the engaging members to move therewith. A pawl is pivotally mounted to each engaging member and is biased to engage with one of a number of teeth formed on the associated rack. An actuating rod has two ends respectively, securely attached to the two pawls to move therewith.

REFERENCES:
patent: 3534935 (1970-10-01), Gunn
patent: 4433869 (1984-02-01), Payne, Jr. et al.
patent: 4576392 (1986-03-01), Quinlan, Jr.
patent: 4723813 (1988-02-01), Kassai
patent: 4759541 (1988-07-01), Chen
patent: 4850644 (1989-07-01), Kazaoka et al.
patent: 5324064 (1994-06-01), Sumser et al.
patent: 5564724 (1996-10-01), Huang

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