US 12,263,381 B2
Cam assembly for use with pole climbing fall restriction device
Kevin W. Truesdell, Binghamton, NY (US); Timothy Batty, Binghamton, NY (US); James J. Rullo, Binghamton, NY (US); and Deforest C. Canfield, Oxford, NY (US)
Assigned to Buckingham Manufacturing Company, Inc., Binghamton, NY (US)
Filed by Buckingham Manufacturing Company, Inc., Binghamton, NY (US)
Filed on Sep. 21, 2018, as Appl. No. 16/137,622.
Application 16/137,622 is a continuation of application No. 15/137,079, filed on Apr. 25, 2016, granted, now 10,099,087.
Claims priority of provisional application 62/152,085, filed on Apr. 24, 2015.
Prior Publication US 2019/0022465 A1, Jan. 24, 2019
Int. Cl. A63B 27/00 (2006.01); A62B 35/00 (2006.01); A63B 29/00 (2006.01)
CPC A63B 27/00 (2013.01) [A62B 35/0075 (2013.01); A63B 29/00 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A cam assembly for use with a pole climbing fall restriction device that comprises a pole strap and a lanyard, said cam assembly comprising:
a) a body having a base, a first sidewall, and a second sidewall, the first sidewall and the second sidewall each extending directly from said base in a same direction, wherein such that the first sidewall opposes the second sidewall, and the base includes a top surface located between the first sidewall and the second sidewall;
b) a cam pivotally connected to said body such that the cam is pivotable with respect to the first sidewall between a first position and a second position, wherein a grasping surface of the cam is nearer to the top surface of the base in the first position than in the second position, wherein when the pole strap is positioned between the cam and the base and a force acts on the pole strap in a direction parallel to the top surface of the base, the cam is drawn toward the first position, such that the grasping surface compresses the strap between the grasping surface and the top surface of the base, to grasp and restrain the pole strap;
c) an elongated spring attached to said cam and producing a bias force thereto relative to said body, to bias the cam in the first position, a major length of said spring extending along a longitudinal axis extending from said first sidewall to said second sidewall; and
d) a first lever securely attached to and positioned on an outside surface of said first sidewall such that, during use, operation of the first lever pivots the cam with respect to the first sidewall, toward the second position, to overcome the bias force of the spring.