发明名称 Locking jack for a window well cover
摘要 A window well cover jack is disclosed. The window well cover jack has three arms: a base arm, a support arm and an actuator handle, all connected to aid in the lifting of a window well cover and to allow egress. In one embodiment, the jack is lockable in a stowed position. It is also possible to add a spring assist to aid in the lifting of a window well cover. Ideally, the window well cover jack is also lockable in a deployed position to aid in holding an ajar window well cover so as to facilitate escape. A simple link, which is easily broken by emergency crews with the proper tools but secure against intruders without said tools, connects the window well cover jack to a window well cover.
申请公布号 US8555562(B2) 申请公布日期 2013.10.15
申请号 US20100826514 申请日期 2010.06.29
申请人 WARNER VINCE S.;RUFF DAVID 发明人 WARNER VINCE S.;RUFF DAVID
分类号 E02D29/14;E04F17/06;E05C17/32;E05D13/00;E05F11/24;E05F11/28;E06B5/02 主分类号 E02D29/14
代理机构 代理人
主权项
地址