Patent ID: 8292243
Filing Date: 2012-10-23
Classification: B30B,F16B,Y10T

Abstract:
1. An adjustment bracket assembly comprising: an adjustment shaft, said shaft comprising a first external thread path and a second external thread path, with said first external thread path being different in configuration from said second external thread path; and an adjustment bracket for engagement with said adjustment shaft, said adjustment bracket comprising: a first internal thread path for engagement with said first external thread paths; a second internal thread path for engagement with said second external thread path; a first bracket subunit, said first bracket subunit having said first internal thread path; and a second bracket subunit, said second bracket subunit having said second internal thread path; wherein when said adjustment shaft is rotated relative to said adjustment bracket, said first bracket subunit, and said second bracket subunit, move differentially in relation to one other, and wherein said first internal thread path differs from said second internal thread path in pitch, one internal thread path being more steeply pitched, and one internal thread path being less steeply pitched by comparison.