US 12,139,879 B2
Work machine dipper with improved dig and payload performance
James G. Jamilosa, Waipahu, HI (US); Andrew Seungyul Yun, Savoy, IL (US); Jae Beom Park, Savoy, IL (US); Mustafa I. Alsaleh, Dunlap, IL (US); and Matthew James Lossmann, Peoria, IL (US)
Assigned to Caterpillar Global Mining LLC, Tucson, AZ (US)
Filed by Caterpillar Global Mining LLC, Tucson, AZ (US)
Filed on Jan. 4, 2021, as Appl. No. 17/140,834.
Prior Publication US 2022/0213663 A1, Jul. 7, 2022
Int. Cl. E02F 3/407 (2006.01); E02F 3/30 (2006.01); E02F 9/28 (2006.01)
CPC E02F 3/4075 (2013.01) [E02F 3/308 (2013.01); E02F 9/2825 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A dipper having an inlet and an outlet defining a cavity, the dipper comprising:
a front cavity wall defining the inlet, the inlet defining a substantially vertical inlet plane;
a rear cavity wall opposite the front cavity wall defining the outlet, the outlet defining an outlet plane, and the outlet plane being angled relative to the inlet plane;
a top cavity wall defining a substantially horizontal top plane, the top cavity wall extending between the front cavity wall and the rear cavity wall;
a bottom cavity wall opposite the top cavity wall, the entire bottom cavity wall lying in the same plane, the bottom cavity wall extending from the rear cavity wall towards the inlet plane, the bottom plane being angled relative to the top plane, and the outlet plane is perpendicular to the bottom plane; and
two side cavity walls connected between the top cavity wall and the bottom cavity wall and extending between the front cavity wall and the rear cavity wall, wherein the bottom plane is angled downwards towards the inlet plane such that a height of the inlet is greater than a height of the outlet, thereby giving the cavity a funnel shape as the cavity extends from the inlet to the outlet.