Patent ID: 6494811
Filing Date: 2002-12-17
Classification: A63B,Y10S

Abstract:
A measuring unit comprising a weight-stack gym machine having a frame with at least one upright and at least one crossbar; the frame support at least one substantially vertical rod, the machine further having a load unit with a plurality of stackable weights, wherein each weight has a through hole formed therein to define a substantially vertical, cylindrical channel, the load unit comprising a through bar extending through said channel and having a plurality of transversal holes spaced apart from each other at a distance proportional to a thickness of the weights; lifting means comprising at least one flexible cable connected to the through bar and designed to actuate the through bar in a direction parallel to the rod; and means for selecting on of said plurality of transversal holes designed to detachably connect a weight to the through bar to isolate a part of the weights, the measuring unit comprising remote load measuring means for calculating static and dynamic training parameters; said remote load measuring means comprising at least one electromagnetic radiation emitter element mounted at a defined point on the frame, at least one reflecting element facing the emitter element and selectively connected to at least one of the weights, and a receiver element mounted on the frame at a point facing the reflecting element; electronic computing means mounted on the frame and electrically connected to the emitter and receiver elements to continuously calculate a distance separating the emitter and receiver elements in a defined mode; said emitter and receiver elements both being substantially aligned with the vertical bar and said reflecting element being mounted at the bottom end of the through bar to reflect the electromagnetic waves of the vertical bar.