Land vehicles – Wheeled – Extensible
Reexamination Certificate
2008-01-08
2008-01-08
Ellis, Christopher P. (Department: 3618)
Land vehicles
Wheeled
Extensible
C280S047260, C298S002000
Reexamination Certificate
active
11259263
ABSTRACT:
A steerable wheelbarrow includes a pair of handles rotatably connected to the rear end of the frame of the wheelbarrow for rotation around a horizontal axis, and a pair of linkages connecting the handles to L-shaped, wheel carrying axles, which are interconnected by a separate linkage, whereby rotation of the handles in opposite directions around the horizontal axis results in rotation of the axles around parallel, vertical axes to turn the wheelbarrow. A stop mechanism limits turning of the wheels to decrease the likelihood of tipping during turning.
REFERENCES:
patent: 2492157 (1949-12-01), Riviere
patent: 3066945 (1962-12-01), Prescott
patent: 4767128 (1988-08-01), Terhune
patent: 4854601 (1989-08-01), Herndon
patent: 4955625 (1990-09-01), Herndon
patent: 5924708 (1999-07-01), Bisaillon et al.
patent: 6446989 (2002-09-01), Intengan
Ellis Christopher P.
Les Aciers Robond Inc.
Seaby George A.
Swenson Brian
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