Land vehicles – Wheeled – Extensible
Patent
1976-12-20
1978-12-05
Blunk, Evon C.
Land vehicles
Wheeled
Extensible
248435, 280 42, 280655, B62B 302
Patent
active
041282523
ABSTRACT:
A foldable hand truck including an elongate telescopic central member and a pair of elongate legs pivotally connected to the lower end of the central member for swinging between positions extending either along and parallel to the central member or extending outwardly at a substantial angle therefrom. Elongate locking members are pivotally connected at one set of their ends to the legs and are slidable at their inner ends along the central member between positions spaced a considerable distance from the pivot connection for the legs, to permit collapsing of the legs, and a more closely spaced relationship with said pivot connections for the legs to lock the legs in their extended positions. Wheel assemblies are mounted on the legs and are swingable between stored positions closely adjacent the legs and operating positions extending outwardly therefrom. Load support arms are swingable between collapsed positions extending longitudinally of the central member and operating positions extending outwardly therefrom at substantial angles relative to each other and diverging on progressing outwardly from the central member to provide a wide based load support.
REFERENCES:
patent: 2563033 (1951-08-01), Greig
patent: 2648545 (1953-08-01), Cassidy
patent: 2743115 (1956-04-01), Rutledge
patent: 3197226 (1965-07-01), Erlinder
patent: 3241852 (1966-03-01), Muller et al.
patent: 3730587 (1973-05-01), Bloxham et al.
patent: 3747882 (1973-07-01), Leis
patent: 3834548 (1974-09-01), Cliffton et al.
Blunk Evon C.
Forman Michael J.
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