Steerable carriage apparatus

Details Steerable carriage apparatus Steerable carriage apparatus

2008-08-31

2010-06-29

Phan, Hau V (Department: 3618)

Land vehicles

Wheeled

Stable vehicles, handle-propelled

C280S442000

Reexamination Certificate

active

07744102

ABSTRACT:
A steerable carriage apparatus for manually transporting a payload across a surface, that includes frame multiple end portions that include rotating elements rotationally attached to each of the frame multiple end portions, with the rotating elements forming contacts on the surface. Additionally, the frame multiple end portions have a pivotal attachment to one another being operational to steer the carriage, with the pivotal attachment having a pivotal axis forming an angle to the surface, the pivotal attachment having the option of selectively controlling the urging, dampening, or locking of the pivotal movement.

REFERENCES:
patent: 5660435 (1997-08-01), Eichhorn
patent: 5713585 (1998-02-01), Curtis et al.
patent: 7083175 (2006-08-01), Liu
patent: 7213818 (2007-05-01), Chang
patent: 2005/0140105 (2005-06-01), Hernandez
patent: 2006/0181040 (2006-08-01), Dunney et al.
patent: 2006/0267303 (2006-11-01), Golias
patent: 2007/0241525 (2007-10-01), Van Dijk

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