Land vehicles – Wheeled – Extensible
Reexamination Certificate
2005-05-03
2005-05-03
Ilan, Ruth (Department: 3616)
Land vehicles
Wheeled
Extensible
C180S209000, C440S012520, C280S124161, C280S124160
Reexamination Certificate
active
06886837
ABSTRACT:
A hydraulic suspension strut (30) has a first on-off valve (58) connecting the first and second chambers (42and44), and a second on-off valve (62) connected to chamber (42) only. Suspension arm (3) of wheel (1) can be retracted beyond normal road travel, or protracted to road travel mode, by use of pump (9) and valves (58and62). The space in the strut above port (56) may be used as a hydraulic bump stop. An accumulator (50) may be included, as a hydraulic spring. Alternatively, strut (70) (FIG.6; note alternative accumulator position) allows suspension to be raised above normal road travel. Strut (100) (FIG.8) may be operated in roadgoing, raised, or retracted mode. These struts may be applied to reconfigurable suspensions; particularly for amphibious vehicles, which may require wheels to be withdrawn above the hull water line to reduce drag on water, particularly during cornering.
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The Search Report of the United Kingdom Patent Office dated Jun. 28, 2000.
International Search Report, Jun. 15, 2001.
Gibbs Technologies Limited
Ilan Ruth
Young & Basile P.C.
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