Land vehicles – Wheeled – Extensible
Patent
1993-05-05
1994-03-15
Johnson, Brian L.
Land vehicles
Wheeled
Extensible
280DIG4, 280651, B62B 302
Patent
active
052941582
ABSTRACT:
A collapsable handcart includes a first axle on which a first pair of wheels are rotatably mounted, a second axle on which a second pair of wheels are rotatably mounted, a substantially inverted U-shaped slanted handle member securely mounted to the second axle at two distal ends thereof, and a collapsable basket. A positioning member extends laterally outward from a lower portion of the first frame member of the basket adjacent to the first axle. A supporting member extends between lower ends of the inverted U-shaped handle member and above the second pair of wheels and below the bottom frame member. A first pair of pivotal members each of which have a first end pivoted to the bottom portion of a second frame member of the basket adjacent to the second axle and a second end pivoted to a mediate portion of the handle member. A second pair of pivotal members each of which have a first end pivoted to the mediate portion of the handle member and a second end. A rod is provided for connecting the second ends of the second pair of pivotal members. Each second pivotal member has three recessed portions at an upper side thereof. When the positioning member respectively engages with a lowermost, mediate, and uppermost recessed portions in the second pair of pivotal members, the handcart is in a fully extended, semi-collapsed, and fully collapsed status, respectively.
REFERENCES:
patent: 2840142 (1958-06-01), Haug et al.
patent: 3207526 (1965-09-01), Brodeck
patent: 3236536 (1966-02-01), Shore
patent: 3310317 (1967-03-01), Luff
patent: 3514123 (1970-05-01), Injeski
patent: 3774929 (1973-11-01), Stanley
patent: 4339141 (1982-07-01), Thiboutot
patent: 4722538 (1988-02-01), Freyman
patent: 4822070 (1989-04-01), Korona et al.
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