David THRIFT,Bradford Joseph ROGERS,Keena HOLLEY,ErJui WANG,Franco LODATO,Andy LOGAN
申请号：
US16401549
公开号：
US20190335702A1
申请日:
2019.05.02
申请国别(地区):
US
年份:
2019
代理人:
摘要：
A dynamic hinge mechanism that connects frame elements of a foldable apparatus such as for example a children's play-yard or other folding containment or structure, including an elastic element that applies a biasing force to assist in erecting the apparatus from a folded configuration to an expanded configuration.
