Patent ID: 7178270

Claim:
An element, comprising: a bimodal spring member including an exterior edge, wherein the bimodal spring member is capable of maintaining a first stable position at which the exterior edge is located at a first position, and wherein the bimodal spring member is capable of maintaining a second stable position at which the exterior edge is located at a second position; an arm extending from the exterior edge of the bimodal spring member, wherein the arm is located at an open position when the exterior edge is located at the first position, and wherein the arm is located at a closed position when the exterior edge is located at the second position; and an arm/bimodal spring interface connecting between the bimodal spring member and the arm, wherein at least some portion of the arm/bimodal spring interface extends through an opening defined in the bimodal spring member when the arm is in the open position, and wherein the portion of the arm/bimodal spring interface that extends through the opening when the arm is in the open position does not extend through the opening when the arm is in the closed position.