US 9,810,504 B1
Multipurpose bracket assembly for archery
Paul LoRocco, Dallas, TX (US); John Estridge, Plano, TX (US); Damon Coalson, Dallas, TX (US); and Greg Webb, Garland, TX (US)
Assigned to TruGlo, Inc., Richardson, TX (US)
Filed by TruGlo, Inc., Richardson, TX (US)
Filed on Mar. 14, 2014, as Appl. No. 14/212,138.
Claims priority of provisional application 61/787,906, filed on Mar. 15, 2013.
Int. Cl. F41B 5/00 (2006.01); F41B 5/14 (2006.01)
CPC F41B 5/14 (2013.01) 18 Claims
OG exemplary drawing
 
1. A bracket assembly for adjusting the elevation of a bowsight, the bracket assembly comprising:
a first bracket portion;
a second bracket portion spaced from the first bracket portion and adapted for connection to a bowsight;
a first pivot arm extending between the first and second bracket portions and connected thereto via first and second pivot joint assemblies, respectively;
a second pivot arm extending between the first and second bracket portions and connected thereto via third and fourth pivot joint assemblies, respectively;
each pivot joint assembly comprising:
a first pivot opening formed in each pivot arm;
a second pivot opening formed in each bracket portion in alignment with the first pivot opening;
a slanted engagement surface associated with one of the first and second pivot openings, the slanted engagement surface forming a seat;
a bushing having a head portion, a shank portion extending from the head portion and first inner threads formed in the bushing; the shank portion extending through the first and second pivot openings so that the pivot arm and bracket portion mutually rotate about the shank portion;
a bearing washer having a frustoconical surface located on the shank portion of the bushing, with the frustoconical surface adjustably engaging the seat of the first pivot opening such that the slanted engagement surface of the first pivot opening engages the frustoconical surface of the bearing washer with adjustable frictional force to thereby vary a force required for mutual rotation of the pivot arm and bracket;
a first fastener having a fastener head and a threaded portion extending from the fastener head, with the fastener head pressing against one of the bracket and bearing washer, and the head portion of the bushing pressing against the other of the bracket and the bearing washer, with the threaded portion of the fastener engaging the first inner threads of the bushing;
wherein tightening the fastener causes the head portion of the bushing to draw towards the fastener head thereby pressing the frustoconical surface of the bearing washer against the slanted engagement surface of the seat while sandwiching the bracket and the pivot arm therebetween, while and varying the frictional force therebetween and thus the force required for mutual rotation of the pivot arm and bracket portion, even with loose tolerances in the pivot joint assembly.