Land vehicles – Wheeled – Extensible
Patent
1992-12-21
1994-02-22
Focarino, Margaret A.
Land vehicles
Wheeled
Extensible
280 42, 280650, 297 42, B62B 706
Patent
active
052880982
ABSTRACT:
A stroller includes a pair of side frames; a bottom scissor frame for foldably connecting the side frames together; a lower articulated safety spreader bar mechanism for releasably locking a lower portion of the side frames in a spaced apart configuration, the lower spreader bar mechanism being moveable between a locked and unlocked position and including first and second pairs of lower pivoting spreader bars, each bar pivotally connected between a side frame and a central position, a connecting bar connecting together the first and second pairs of bars, and a lower releasable locking assembly for releasably locking the second pair of bars in a locked position; an upper articulated safety spreader bar mechanism for releasably locking an upper portion of the side frames in a spaced apart configuration, the upper spreader bar mechanism being moveable between a locked and unlocked position and including a pair of upper pivoting spreader bars, each pivotally connected between a side frame and a central position, and an upper releasable locking assembly for releasably locking the pair of upper pivoting spreader bars in a locked position; and a release bar connected between one lower pivoting spreader bar and one of the first pair of upper pivoting spreader bars so as to automatically pivot the upper pivoting spreader bars with respect to each other, thereby releasing the locking, engagement of the upper releasable locking assembly, upon pivoting movement of the first pair of lower pivoting spreader bars with respect to each other.
REFERENCES:
patent: 4202278 (1980-05-01), Wadenhed
patent: 4232897 (1980-11-01), Maclaren
patent: 4266807 (1981-05-01), Griffin
patent: 4428598 (1984-01-01), Kassai
patent: 4765647 (1988-08-01), Shamie
patent: 4986564 (1991-01-01), Liu
patent: 5020816 (1991-06-01), Mulholland
patent: 5181735 (1993-01-01), Onishi
Focarino Margaret A.
Mar Michael
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