Patent ID: 8899540

Claim:
A counterbalance mechanism comprising: a housing comprising a first aligned pair of through holes and a second aligned pair of through holes; a pivot nose comprising a third aligned pair of through holes, a fourth aligned pair of through holes and an aligned pair of arcuate slots; an energy storage device comprising first and second spring mounts and at least one spring, the first spring mount comprising at least one first flange and a pivot flange having a fifth through hole, the second spring mount comprising at least one second flange and a sixth through hole and the at least one spring comprises first and second ends, the first end is secured to the at least one first flange and the second end is secured to the at least one second flange; a first pivot pin disposed in the first aligned pair of through holes and the third aligned pair of through holes; a stop member disposed in the second aligned pair of through holes and the aligned pair of arcuate slots; a second pivot pin disposed in the fourth aligned pair of through holes and the fifth through hole; a force magnitude adjuster arranged to control a force of the at least one spring; and, a force angle adjuster arranged to control a force direction of the at least one spring.