Miscellaneous hardware (e.g. – bushing – carpet fastener – caster – Casters
Reexamination Certificate
2006-05-02
2006-05-02
Shriver, J. Allen (Department: 3618)
Miscellaneous hardware (e.g., bushing, carpet fastener, caster,
Casters
C280S005200, C280S043000
Reexamination Certificate
active
07036185
ABSTRACT:
The present invention relates to an arrangement in a wheel lifting mechanism designed to lift at least one wheel (1) running on an underlying surface so that it is capable of negotiating an obstacle (h) rising above the underlying surface. The arrangement comprises an element (7) which is formed with a contour convexly curved towards the underlying surface and is moveably supported in relation to the axle of the wheel (1). The said element is designed, when the contour of the element (7) engages with the obstacle (h), to bring about the said lifting of the wheel (7) as the element (7) is rotated about its point of engagement with the obstacle (h). The arrangement further comprises a chassis (4), to which the wheel axle is firmly connected. Between the chassis and the element (7) there is an operative connection designed, when the element (7) engages with the obstacle (h), to allow the chassis (4) firstly to undertake lifting of the wheel (1) from a home position of the element (7) during a displacing movement relative thereto in the direction of movement of the wheel, and secondly to bring about a return to the home position once the wheel (1) has been lifted to the level of the obstacle (h).
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Dahlquist Adam
Karlsson Bjorn
Morndal Staffan
Enkatsu Solutions AB
Merchant & Gould P.C.
Shriver J. Allen
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