	US 12,330,923 B2
	Modular pulley block
Matthew Lippmann, Oak Park, IL (US); and David O'Neill, Vashon, WA (US)
Assigned to Spectrum Lab Holdings, LLC, Elkton, MD (US)
Filed by Fluoron Inc., Elkton, MD (US)
Filed on May 30, 2023, as Appl. No. 18/203,423.
Prior Publication US 2024/0400355 A1, Dec. 5, 2024
Int. Cl. B66D 3/04 (2006.01)

CPC B66D 3/04 (2013.01)

22 Claims

1. A modular block comprising:

a) a pair of load fasteners;

b) a pair of load fastener retainers;

c) an axle fastener;

d) a pair of load wye plates, each comprising:

i) a wheel portion having an axle fastener aperture therethrough;

a pair of load extension arms extending from the wheel portion at an offset angle to each other, each load extension arm comprising a load fastener aperture with one of the pair of load fasteners extending through a respective load fastener aperture, and wherein each of the pair of load fastener retainers are secured to a respective load fastener;

e) a bushing extending between the pair of load wye plates and retained by the axle fastener extending through the wheel portion of the pair of load wye plates;

f) a sheave wheel having a bushing aperture and wherein the bushing extends through said bushing aperture;

g) a sheave comprising:

i) a wheel aperture, wherein the sheave wheel is configured in the wheel aperture;

ii) a cable guide extending around the outer perimeter of the sheave and having a guide well for guiding a cable along the cable guide;

h) a pair of side plates configured between the respective load wye plates and the sheave wheel, each comprising:

i) a wheel portion having an axle fastener aperture therethrough;

ii) a pair of retainer extension arms extending from the wheel portion of the side plate at an offset angle to each other, each retainer extension arm comprising a load fastener aperture therethrough for receiving one of said pair of load fasteners therethrough;

i) an eye assembly comprising:

i) an eye comprising:

a retainer shank;

a base flange; and

a mount portion having a mount aperture;

wherein the base flange extends radially outward from an eye axis more than the retainer shank;

ii) a pair of split load blocks, each comprising:

a sheave receiver; and

a pair of load flanges extending out in opposing directions from said sheave receiver and each comprising a load aperture for receiving a respective load fastener therethrough;

wherein each of the pair of load fasteners extend through respective load apertures in the pair of load wye plates, the load apertures in the pair of side plates, and the load apertures in the pair of load flanges of the pair of split load blocks;

wherein the modular block is modular and configured to be disassembled by removal of the load fasteners and the axle fastener from the load apertures and axle aperture, respectively.