A device for releasably holding the boot support of a cross-country ski binding against pivotal movement relative to the ski has a retainer which is mounted on two pairs of mutually inclined links. The lower ends of the links are pivoted to the ski and the upper ends of the links are pivoted to spaced-apart...http://www.google.co.uk/patents/US4635955?utm_source=gb-gplus-sharePatent US4635955 - Device for releasably holding parts of ski bindings
