The automatically extensible and retractable wheel unit for mounting on a corner of a suitcase includes a housing with an aperture at the underside thereof, a bifurcated bracket pivotally supported on the housing, a wheel carried rotatably on the bracket for pivoting along with the bracket between a retracted position and an extended position, and a push-pull member pivotally supported on the housing and connected to a bracket by a C-shaped spring member. When the wheel is in the retracted position, a portion of the push-pull member extends out of the ap...
An automatically extensible and retractable wheel unit for mounting on a corner of a suitcase, comprising: a housing with an aperture at the underside thereof; a bifurcated bracket pivotally supported in said housing and including a pair of legs joined together; a wheel rotatably carried on said bracket for pivoting along with said bracket between a retracted position and an extended position; a push-pull member pivotally supported in said housing and having an extensible portion which comprises a first portion extending out of said aperture of said hous...
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