Land vehicles – Wheeled – Extensible
Patent
1995-04-25
1996-09-10
Camby, Richard M.
Land vehicles
Wheeled
Extensible
280658, B62B 708
Patent
active
055538851
ABSTRACT:
A foldable stroller frame includes a pair of front wheel support rods, a U-shaped handle with two arms, each of which is slidable relative to a respective one of said front wheel support rods between a first position, wherein the stroller frame is unfolded and wherein the arm is locked to the front wheel support rod so as to prevent movement relative to the front wheel support rod, and a second position, wherein the stroller frame is folded, and a pair of rear wheel support rods. A lock device is fixed to an upper end portion of each of the front wheel support rods and is connected slidably to a respective one of the arms in order to lock the arm in the first position against movement relative to the front wheel support rod when the stroller frame is unfolded. A pivot link is mounted slidably to each of the front wheel support rods and is fixed to a respective one of the arms. An upper end portion of a respective one of the rear wheel support rods is pivoted to the pivot link. The stroller frame further includes a pair of connecting rods, each of which has an upper end portion pivoted to the lock device, and a lower end portion pivoted to the respective one of the rear wheel support rods.
REFERENCES:
patent: 2803470 (1957-08-01), Welsch
patent: 4529219 (1985-07-01), Shamie
patent: 4770437 (1988-09-01), Gla ser
patent: 5074575 (1991-12-01), Bigo
patent: 5106116 (1992-04-01), Cherz
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