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公开(公告)号:US08739342B1
公开(公告)日:2014-06-03
申请号:US14104939
申请日:2013-12-12
申请人: David Johnson , Donald Morris
发明人: David Johnson , Donald Morris
IPC分类号: E01D15/00
CPC分类号: E04F11/002 , B66B9/0869 , E04F2011/005
摘要: A step assembly includes a tread and an actuator. The actuator is operably coupled to the tread and configured to selectively reciprocate the tread between a raised position and a lowered position. The actuator is rotatably coupled to the actuator mount, which is slidably coupled to a frame. A spring selectively maintains a position of the actuator mount relative to the frame.
摘要翻译: 台阶组件包括胎面和致动器。 致动器可操作地联接到胎面并且构造成在凸起位置和降低位置之间选择性地往复运动胎面。 致动器可旋转地联接到致动器安装件,其可滑动地联接到框架。 弹簧选择性地维持致动器安装件相对于框架的位置。