Skate having an adjustable blade or wheel assembly

Claim 1

A skate comprising a boot including a sole having a bottom surface, an operative portion affording relative movement of the skate with respect to a supporting surface and including means for making contact with said support surface only along a single straight narrow area, and means for releasably fastening said operative portion to said boot, said means including: a frame having top and bottom surfaces fixed to said sole with the top surface of said frame against the bottom surface of said sole, said frame having walls defining an elongate channel extending longitudinally of said boot and having an opening through the bottom surface of said frame, the walls defining said channel including opposed side walls extending to said opening, and an inner wall opposite said opening, the transverse cross sectional shape of said side walls having greater length than width in a direction normal to said bottom surface of said sole, the width of said frame along said side walls being substantially less than the width of said sole, said walls defining a transverse cross sectional shape for said channel that has a greater length than width in a direction normal to the bottom surface of said sole, and said channel releasably receiving said operative portion with parts of said operative portion and said side walls being in close fitting relationship including projections on said operative portion, said projections having a greater height than width in a direction normal to the bottom surface of said sole and being received in recesses in said side walls and parts of said operative portion projecting along said side walls to a position closely adjacent said inner wall; and manually operable means for releasably securing said operative portion in said channel at a predetermined position with respect to said frame with said single straight narrow area centrally aligned with said opening.