Land vehicles – Wheeled – Extensible
Reexamination Certificate
2007-05-01
2008-11-04
Ellis, Christopher (Department: 3618)
Land vehicles
Wheeled
Extensible
C280S639000, C280S043100, C280S047170, C280S047270, C016S429000
Reexamination Certificate
active
07445231
ABSTRACT:
A handcart with a foldable handle structure comprises a handle structure formed of a holder segment and a frame pivotally coupled to each other. The lower ends of the frame are pivotally coupled to a block board and a pair of wheels. A pair of position-limiting sleeves wraps the tubes of the holder segment. When the handcart is in use, the position-limiting sleeves are pulled down to wrap the pivotal joints between the holder segment and the frame to confine the handle structure to a straight line. Then, the user can hold the handle and push the handcart forward. When not in use, the position-limiting sleeves are pushed up to reveal the pivotal joints between the holder segment and the frame, and the holder segment can thus be folded down. Thereby, the volume of the handcart can be reduced to facilitate storage or convenience lifting the handcart to carry about.
REFERENCES:
patent: 3992038 (1976-11-01), Guadano, Sr.
patent: 4401319 (1983-08-01), Kazmark
patent: 5439239 (1995-08-01), Su
patent: 5468005 (1995-11-01), Yang
patent: 6616174 (2003-09-01), Bierma
patent: 6789809 (2004-09-01), Lin
patent: 7044484 (2006-05-01), Wang
patent: 7387306 (2008-06-01), Zimmer
Ellis Christopher
Muncy, Geissler, Olds and Lowe, PLLC
Walters John D
Yewe Yih Enterprise Co., Ltd.
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