US 11,142,934 B2
COUNTERBALANCE AND METHOD OF MAKING THE SAMEGeneral
US 11,142,934 B2
COUNTERBALANCE AND METHOD OF MAKING THE SAME
Tech Center:
3600 Transportation, Construction, Electronic Commerce, Agriculture, National Security and License and Review
Examiner:
Chuck Y Mah
Art Unit:
3677 Wells, Earth Boring/Moving/Working, Excavating, Mining, Harvesters, Bridges, Roads, Petroleum, Closures, Connections, and Hardware
Agent:
Inventors:
Daniel M. Graham
Assignee:
Priority:
04/13/17
Filed:
06/26/20
Granted:
10/12/21
Expiration:
04/13/37
Abstract
A counterbalance assembly, including a housing, a pivot nose pivotably connected to the housing, and a spring pack disposed within a volume formed by the housing, the spring pack including a first end engaged with the housing, a second end engaged with the pivot nose, an energy storage device arranged between the first end and the second end, and a spring retainer operatively arranged to adjust a force of the energy storage device on the pivot nose.
Cooperative Patent Classification (CPC)
E05E05F1/1261E05D11/0054E05Y2999/00E05F