Flexible or portable closure – partition – or panel – Plural strip – slat – or panel type – With mounting or supporting means
Reexamination Certificate
2008-05-13
2008-05-13
Mitchell, Katherine (Department: 3634)
Flexible or portable closure, partition, or panel
Plural strip, slat, or panel type
With mounting or supporting means
C160S201000, C160S207000, C160S169000, C160S218000, C160S188000
Reexamination Certificate
active
07370684
ABSTRACT:
A stacking mechanism for shutter members of a shutter mechanism, comprising: a rotatable screw with external thread of length L and pitch P1; a plurality of N traveling nuts mounted on the screw, having internal thread of pitch P1and external thread of pitch P2,P1>P2; an arrester preventing rotation of the nuts within a length L1of the screw, while allowing sliding; and a threaded member of pitch P2adapted to engage the external thread of the nuts within a length L2of the screw. In a first position of the mechanism, the nuts are arranged over the length L1. Upon rotation of the screw, the nuts slide along the screw at rate P1per 1 turn, transit from L1to L2, and then slide within the length L2at a rate P2per 1 turn, thereby achieving reversibly a second position of the mechanism where they are arranged over the length L2,L2<L1.
REFERENCES:
patent: 2179882 (1939-11-01), Durre
patent: 2253843 (1941-08-01), Bruns
patent: 2482082 (1949-09-01), Wahlberg
patent: 2776708 (1957-01-01), Long
patent: 3008519 (1961-11-01), Hawkins
patent: 3717195 (1973-02-01), Larranaga
patent: 4846244 (1989-07-01), Rosenfeld
patent: 5163494 (1992-11-01), MacNeil et al.
patent: 5327062 (1994-07-01), Byers
patent: 5469905 (1995-11-01), McKinney et al.
patent: 5603372 (1997-02-01), Farmont et al.
patent: 6651724 (2003-11-01), Cittadini
Padan Michael
Padan Tal
Lin Samuel S
Meyer Jerald L.
Mitchell Katherine
Parma Shutter Technologies, Ltd.
Protigal Stanley N.
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