US 11,700,845 B2
Boom breakaway hinge assembly with damper system
Karl Luebke, New Holstein, WI (US); Derrick Fallon, Manitowoc, WI (US); Brian Pilney, Westbend, WI (US); and Lyle P. Mangen, Willmar, MN (US)
Assigned to CNH INDUSTRIAL AMERICA LLC, New Holland, PA (US)
Filed by CNH Industrial America LLC, New Holland, PA (US)
Filed on Nov. 6, 2019, as Appl. No. 16/675,518.
Prior Publication US 2021/0127658 A1, May 6, 2021
Int. Cl. A01M 7/00 (2006.01); F16C 11/04 (2006.01)
CPC A01M 7/0078 (2013.01) [A01M 7/0053 (2013.01); F16C 11/04 (2013.01); Y10T 403/32541 (2015.01); Y10T 403/32614 (2015.01); Y10T 403/32942 (2015.01)] 20 Claims
OG exemplary drawing
 
1. A boom breakaway hinge assembly with a damper system, the boom breakaway hinge assembly comprising:
a first bracket coupled to a boom section, the first bracket including a stop bracket coupled thereto;
a second bracket coupled to a breakaway boom section;
a damper system including a damper assembly coupled to the stop bracket, the damper assembly comprising:
a housing having a first end, a second end, and a cavity formed in the second end thereof and extended toward the first end thereof;
at least one rubber compression element disposed within the cavity of the housing;
a plunger having a first end and a second end, the first end of the plunger being disposed within the cavity of the housing and in contact with the at least one rubber compression element, the second end of the plunger being disposed outside the cavity of the housing; and
a stop coupled to the second end of the plunger;
wherein the first and second brackets are pivotably coupled to each other via a pivot hinge along a pivot axis;
wherein the breakaway boom section pivots about the pivot axis between an extended position and a stored position;
wherein the damper assembly is configured to prevent over-pivoting and reduce load impact of the breakaway boom section when pivoting to the extended position.