Invention Grant
- Patent Title: Dual release locking system for a sign supporting stand
- Patent Title (中): 双释放锁定系统，用于标志支架
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Application No.: US11707838Application Date: 2007-02-16
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Publication No.: US07669815B2Publication Date: 2010-03-02
- Inventor: Stephen W. Clewett
- Applicant: Stephen W. Clewett
- Agency: Lauson & Tarver LLP
- Agent Edwin Tarver
- Main IPC: F16M11/38
- IPC: F16M11/38 ; G09F15/00
Abstract:
A dual release locking system for locking and unlocking the foldable leg members of a sign supporting stand. For deployment, a locking pin can be retracted by the stepping action of a worker's foot or pulled by hand. Consequently, this same pin can be retracted for retrieval by a kicking action of a worker's foot or pulled by hand.
Public/Granted literature
- US20080197252A1 Dual release locking system for a sign supporting stand Public/Granted day:2008-08-21
Information query
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