Abstract: Electronically releasable boot for sport-utensils a bike or ski and more, integrate with a moveable projecting sole profile supported in the boot, working in several directions of force by an electronically frequency-measured semi-rigid roller-locking-telescope, without triggering electronic release signals by stepping in, code-protected against improper use, that the setting radio-controlled electronically transmitted to a display shows to check for correct setting of the boot, and to allow an electronic release for a boot-sole from the connection 5+6 of the sport-utensil, by means of an electronic circuit or remote controlled by order.

Abstract: A clamping and releasing mechanism is disclosed. In the exemplary embodiment the mechanism comprises a housing accommodating a telescopic piston-pin, the rearward end of which is mechanically locked. Pressure sensors located at the forward portion of the housing indicate the actual pressure applied to the piston pin. In the event a predetermined pressure is exceeded, a circuit produces an electric signal which actuates the mechanical lock to release the object being clamped.