Patent ID: 7878667

Claim:
A solar concentrator system, for directing and concentrating solar radiation onto a power production solar receiver, comprising a) an array of at least one adjustable optical unit; b) said unit mounted on at least one pivot; c) said optical unit acted on by a torque; d) said torque causing rotation of said optical unit; e) said rotation being about said pivot; f) a support axis joining said optical unit with said pivot; g) said pivot immersed in a latching material; h) said latching material comprising at least one element of a group of low melting point chemical elements; i) said low melting point being between 10° C. and 300° C.; j) said pivot is latched by a freezing of said latching material about said pivot; k) said pivot is unlatched by a melting of said latching material; and l) wherein said latch is unlatched by heating said latching material above its melting point by means of a resistor inductively coupled to a power supply, in which said resistor is in a group consisting of a resistor within the pivot and a resistor within the latching material.