Height adjustable platforms and associated mechanisms

A height adjustable work surface, comprising:

• a work surface;
• a lock rod;
• a brake assembly sized and shaped to receive the lock rod and adapted to couple with the work surface, wherein the brake assembly is adapted to selectively translate with respect to the lock rod, the brake assembly including:
• a first torsion spring having a first inner portion;
• and
• a second torsion spring having a second inner portion, wherein:
• the first inner portion and the second inner portion are sized and shaped to receive the lock rod,
• the first torsion spring is adapted such that the first inner portion selectively engages with the lock rod, and
• the second torsion spring is adapted such that the second inner portion selectively engages with the lock rod, wherein the brake assembly includes a locked configuration, an unlocked configuration, and a safety configuration, wherein:
• in the locked configuration, the first inner portion is engaged with the lock rod, thereby preventing the translation of the brake assembly with respect to the lock rod,
• in the unlocked configuration, the first inner portion is disengaged from the lock rod, thereby allowing the translation of the brake assembly with respect to the lock rod, and
• in the safety configuration, the second inner portion is engaged with the lock rod, irrespective of whether the first inner portion is engaged with the lock rod, and thereby preventing the translation of the brake assembly with respect to the lock rod.