Back support device

An adjustable back support device to support, align and assist back muscles of a user when external forces are applied to the upper body of the user, comprising:

• a shoulder support harness comprised of a first side, a second side, and a middle portion, said shoulder support harness configured to fit atop a user's shoulders, wherein the first and second sides are positioned on a user's chest and the middle portion is positioned on the user's back;
• an adjustable support structure comprised of an upper support beam, a main support beam, and a lower support beam, wherein said upper support beam is contiguous with one end of the main support beam and the lower support beam is mounted atop and attached to an opposite end of the main support beam and oriented perpendicularly thereto, wherein said shoulder support harness is mounted atop and attached to the upper support beam;
• an adjustable waist support belt mounted atop and attached to the lower support beam;
• a pair of adjustable harness straps, one harness strap attached at one end to the first side of the shoulder support harness and the other harness strap attached at one end to the second side of the shoulder support harness, wherein each of the harness straps at its opposite end is configured to attach to the waist support belt;
• an adjustable elastic support strap having a first end and a second end, said first end attached to the shoulder support harness and said second end secured to the waist support belt;
• a height adjustment assembly configured to adjust length of the back support device;
• and
• an elastic strap tensioner assembly configured to adjust tension in the elastic support strap comprised of a tensioner base, a tensioner arm, a tensioner arm roller, a tensioner arm rotatable pivot, a tensioner arm pin which inserts into the tensioner arm pivot, and a tensioner indicator scale, wherein the elastic strap tensioner assembly is configured to provide increasing amounts of tension in the elastic support strap as the tensioner arm is raised in an upwardly direction.