Structure for foldable baby carriage

Land vehicles – Wheeled – Extensible

Patent

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Details

280647, 280650, 297 45, B62B 1100

Patent

active

040625559

ABSTRACT:
Structure for foldable baby carriage comprises: a pair of four bar linkages each having a seat tube, a back tube with its lower end connected to the rear end of the said seat tube and its upper end extending upward, an arm rest member with its rear end pivoted to the middle portion of the said seat tube and its front end extending forward, and a front leg extending downward with its upper end pivoted to the front end of the said arm rest and its middle portion pivoted to the middle of the said seat tube; two cross frames, the one with its upper ends pivoted to the front ends of the seat tubes and its lower ends pivoted to the lower ends of front legs, and the other with its lower ends pivoted to the rear ends of the seat tubes and its upper ends to the middle portions of the back tubes; two rear legs extending downward each with its upper end pivoted to the middle portion of the arm rest and its middle portion passing through a sliding sleeve pivoted to the rear end of the said seat tube; and two pairs of twin type wheel sets respectively provided under front and rear legs.

REFERENCES:
patent: 3836164 (1974-09-01), Sugino
patent: 3945662 (1976-03-01), Zalewski
patent: 3968991 (1976-07-01), Maclaren
patent: 3995882 (1976-12-01), Watkins

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