Closure fasteners – Bolts – Emergency operating means
Reexamination Certificate
2011-03-15
2011-03-15
Lugo, Carlos (Department: 3673)
Closure fasteners
Bolts
Emergency operating means
C292S093000, C292S094000, C292SDIG065
Reexamination Certificate
active
07905522
ABSTRACT:
An exit device for latching a door in tornado-prone areas keeps the door closed when the door is subjected to tornado debris impact by incorporating a blocking arm that swings outward away from the door as impact energy is transferred through the door to the blocking arm in the exit device. The blocking arm prevents a pushbar actuator from moving towards the door during impact or rebound which would allow the door to open. The blocking arm is biased close to the door in a non-blocking position where it initially receives the transferred impact energy. During the impact event the blocking arm rapidly rotates on a pivot from the non-blocking position to a blocking position away from the door. After the impact event, the blocking arm returns to the non-blocking position so that the exit device operates normally.
REFERENCES:
patent: 3073142 (1963-01-01), Stebbins
patent: 3663047 (1972-05-01), Zawadzki
patent: 3719248 (1973-03-01), Breitschwerdt et al.
patent: 4083590 (1978-04-01), Folger
patent: 4167280 (1979-09-01), Godec et al.
patent: 4384738 (1983-05-01), Floyd
patent: 4429909 (1984-02-01), Lindquist
patent: D279647 (1985-07-01), Ohno
patent: 4627649 (1986-12-01), Leplat
patent: 4714282 (1987-12-01), Henderson
patent: 4906034 (1990-03-01), Verslycken
patent: 5011199 (1991-04-01), Lowe et al.
patent: 5085475 (1992-02-01), Austin et al.
patent: 5169185 (1992-12-01), Slaybaugh et al.
patent: 5340171 (1994-08-01), Slaybuagh et al.
patent: 5531492 (1996-07-01), Raskevicius
patent: 5570914 (1996-11-01), Hughes
patent: 5669642 (1997-09-01), Kang
patent: 6042159 (2000-03-01), Spitzley et al.
patent: 6048000 (2000-04-01), Geringer et al.
patent: 6120071 (2000-09-01), Picard et al.
patent: 6174004 (2001-01-01), Picard et al.
patent: 6409232 (2002-06-01), Nigro, Jr. et al.
patent: 6471262 (2002-10-01), Schwab
patent: 6622534 (2003-09-01), Miller et al.
patent: 6709033 (2004-03-01), Jooss et al.
patent: 6802550 (2004-10-01), Griggs, Jr. et al.
patent: 6971688 (2005-12-01), Drysdale et al.
patent: 7029042 (2006-04-01), Belchine, III
DeLio & Peterson LLC
Lugo Carlos
Sargent Manufacturing Company
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