US 11,753,791 B2
Dipper handle assembly yoke having a transition portion distal end with angled orientation
Cristian Zaharia, Marana, AZ (US); Michael W. Haws, Wind Point, WI (US); Aruna Kinjarapu, Oro Valley, AZ (US); Vladimir A. Korchagin, Tucson, AZ (US); and James G. Jamilosa, Waipahu, HI (US)
Assigned to Caterpillar Global Mining LLC, Tucson, AZ (US)
Filed by Caterpillar Global Mining LLC, Tucson, AZ (US)
Filed on Dec. 22, 2021, as Appl. No. 17/558,941.
Prior Publication US 2023/0193583 A1, Jun. 22, 2023
Int. Cl. E02F 3/00 (2006.01); E02F 3/36 (2006.01); B21K 1/26 (2006.01); E02F 3/30 (2006.01); E02F 3/38 (2006.01)
CPC E02F 3/3677 (2013.01) [B21K 1/26 (2013.01); E02F 3/308 (2013.01); E02F 3/38 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A dipper handle assembly, comprising:
a tube including a tube first end and a tube second end; and
a yoke, comprising:
a collar including a collar proximal end coupled to the tube second end and a collar distal end opposite the collar proximal end, wherein the collar extends along a collar axis;
a transition portion including a transition portion proximal end coupled to the collar distal end and a transition portion distal end opposite the transition portion proximal end, wherein the transition portion extends laterally outwardly relative to the collar axis from the transition portion proximal end to the transition portion distal end, and wherein the transition portion distal end includes spaced first and second lateral sections joined by spaced first and second transverse sections;
a first arm, including:
a first arm proximal end coupled to the first lateral section of the transition portion distal end;
a first arm distal end spaced from the first arm proximal end;
a first dipper pin lug disposed adjacent the first arm distal end; and
a first pitch brace lug located intermediate the first arm proximal end and the first arm distal end; and
a second arm, including:
a second arm proximal end coupled to the second lateral section of the transition portion distal end;
a second arm distal end spaced from the second arm proximal end;
a second dipper pin lug disposed adjacent the second arm distal end; and
a second pitch brace lug located intermediate the second arm proximal end and the second arm distal end;
wherein the first and second lateral sections and the first and second transverse sections of the transition portion distal end lie in a virtual transition portion distal end plane, and wherein the virtual transition portion distal end plane intersects the collar axis at an oblique angle.