Metal working – Method of mechanical manufacture – Work holding
Reexamination Certificate
2007-02-06
2007-02-06
Hong, John C. (Department: 3726)
Metal working
Method of mechanical manufacture
Work holding
C029S281400, C049S360000
Reexamination Certificate
active
10661253
ABSTRACT:
A rollup barrier is provided for a robotic station. The barrier includes a track having a tapered portion at its lower end. A switch is mounted at the extreme lower end of the track. The switch prevents actuation of the robotic equipment unless the barrier is moved to its extreme lowermost position. Extensible cylinders are used for connection to a chain trained around a sprocket in order to roll the roller.
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patent: 4488630 (1984-12-01), Plumb
patent: 5271183 (1993-12-01), Hahn et al.
patent: 5450890 (1995-09-01), Pinkalla et al.
patent: 5579884 (1996-12-01), Appleyard et al.
patent: 6402239 (2002-06-01), Haglund
Christen John P.
Judge Greg
Mangelsen Jan C.
Neumann Harlon
Sidlinger Matthew R.
GSG, LLC
McKee Voorhees & Sease, P.L.C.
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