发明名称 |
Portable riser apparatus having a lifting and locking assembly |
摘要 |
There is provided a portable riser having an operator actuated lifting assist assembly operatively coupled to a riser deck. In one aspect, there is a first pivot mechanism coupled to a first support leg and adapted to initiate upward movement of the portable riser from a collapsed position when a downward force is applied to the first support leg, and a second pivot mechanism coupled to a second support leg and adapted to continue the upward movement. The lifting assist assembly provides a lifting force that continues upward movement to an upright position where the portable riser in locked. There is included a riser unlocking means for unlocking the lifting assist assembly. The portable riser remains in the upright position until the riser unlocking means is operated and a collapsing force is applied to the portable riser sufficient to overcome the lifting force and enable collapsed of the portable riser.
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申请公布号 |
US2009249713(A1) |
申请公布日期 |
2009.10.08 |
申请号 |
US20090454079 |
申请日期 |
2009.05.12 |
申请人 |
RIVERA JR JEREMIAS C;LAZAR JOHN DANIEL;SAMIKKANNU DOSS |
发明人 |
RIVERA, JR. JEREMIAS C.;LAZAR JOHN DANIEL;SAMIKKANNU DOSS |
分类号 |
E04F11/06 |
主分类号 |
E04F11/06 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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