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US 11,753,791 B2Granted
Dipper handle assembly yoke having a transition portion distal end with angled orientation
AssigneeCaterpillar Global Mining LLC
InventorsCristian Zaharia, Michael W. Haws, Aruna Kinjarapu, Vladimir A. Korchagin, James G. Jamilosa
Life of this patent
Estimating the term…
Abstract
A dipper handle assembly includes a tube coupled to a yoke. The yoke has a collar extending along a collar axis, a transition portion, a first arm and a second arm. The transition portion includes a distal end having first and second lateral sections and first and second transverse sections. The first and second lateral sections and the first and second transverse sections all lie in a virtual transition portion distal end plane, and the virtual transition portion distal end plane intersects the collar axis at an oblique angle.
Claims20
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.
16 more elements
A work machine, comprising:
- a base configured to be supported on a ground surface;
- a revolving frame coupled to the base and rotatable about an axis;
- a boom pivotally coupled to the revolving frame;
- a dipper handle assembly pivotally coupled to the boom, the 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;
- and
- a dipper pivotally coupled to the yoke.
22 more elements
A method of forming a yoke for a dipper handle assembly, the method comprising:
- forging a transition component, the transition component comprising:
- a collar including a collar proximal end and a collar distal end opposite the collar proximal end, wherein the collar extends along a collar axis;
- and
- 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;
- 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;
- forming a first arm, the first arm comprising:
- 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
- forming a second arm, the second arm comprising:
- 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.
15 more elements
Dependencies are inferred from the claim text.