Infant walking trainer

Details Infant walking trainer Infant walking trainer

1977-12-19

1979-10-16

Pinkham, Richard C.

Undertaking

2481886, 280 8705, 297 5, 403100, A47D 1304

Patent

active

041711327

ABSTRACT:
An infant walking trainer can be folded by easy operation. The infant walking trainer includes a lower circular frame provided with a plurality of wheels, an upper circular frame confronting the lower circular frame, a lower supporting rod pivotally and rotatably projecting from the lower circular frame, and an upper supporting rod pivotally and rotatably depending from the upper circular frame. A connecting means connects the upper end of the lower supporting rod and the lower end of the upper supporting rod rotatably with each other. Lower and upper engaging grooves and lower and upper engaging portions are provided on the upper end of the lower supporting rod and on the lower end of the upper supporting rod respectively. An engaging member fixes the lower and upper supporting rods collinearly by being engaged with the lower and upper engaging portions, the engaging means being slidable with the lower and upper engaging grooves. A resilient engaged state maintaining member maintains the engaged state of the engaging member.

REFERENCES:
patent: 16862 (1857-03-01), Thomas
patent: 1204249 (1916-11-01), Condon, Jr.
patent: 1806454 (1931-05-01), Goudeau
patent: 1906218 (1933-04-01), Patchell
patent: 2306780 (1942-12-01), Copson
patent: 2467579 (1949-04-01), Boudreau
patent: 2490988 (1949-12-01), Wheeler
patent: 3205521 (1965-09-01), McCaughey et al.
patent: 3504927 (1970-04-01), Seki
patent: 3796430 (1974-03-01), Sudo
patent: 4065086 (1977-12-01), Nakao

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