Land vehicles – Skates – Runner type
Patent
1981-01-12
1983-08-16
Peters, Jr., Joseph F.
Land vehicles
Skates
Runner type
A63C 710
Patent
active
043987460
ABSTRACT:
A waxless or gripping ski base capable of continuous adjustment from a flat-base glide configuration to a stepped-base grip configuration for increased traction, such as may be desired in cross-country skiing. The ski base comprises a plurality of base segments which are pivotally attached to a support member and are subject to adjustment from the flat glide configuration into a variety of nonlinear gripping configurations. This variety of stepped-base gripping configurations is programmed by selection of a unique geometric configuration for displacement contact faces which operate against the base segments to cause their vertical displacement in either a positive or negative direction. The segment adjustment member can be selectively changed to cause the contact faces to displace the segments out of the base line of the ski into a traction configuration which may be either convex or fully extended as in a sawtooth pattern. Likewise, the adjustment member may be used to develop a negative displacement for improved traction of the ski in a downhill path.
REFERENCES:
patent: 1989377 (1935-01-01), Osborn
patent: 2248008 (1941-07-01), Miesen
patent: 2844380 (1958-07-01), Tribelhorn
patent: 3927896 (1975-12-01), Detoia
Hill Mitchell J.
Peters Jr. Joseph F.
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