Fire escape – ladder – or scaffold – Wall- or floor-attached – Ladder
Reexamination Certificate
2008-03-11
2008-03-11
Chin-Shue, Alvin (Department: 3634)
Fire escape, ladder, or scaffold
Wall- or floor-attached
Ladder
C182S107000
Reexamination Certificate
active
10639389
ABSTRACT:
A ladder support system that may be mounted on a ladder rung or other securing structures and may further be shaped to provide lateral support to the ladder when a pole or other supporting structure is positioned on the ladder support. The ladder support may also be configured for convenient mounting and removal from the securing structure to which it may be mounted. The ladder support may be resilient and may have a slit along the length of the support to provide releasable mounting on the ladder.
REFERENCES:
patent: 675545 (1901-06-01), Hatch
patent: 1964067 (1934-06-01), Leach et al.
patent: 2808975 (1957-10-01), Palmquist
patent: 3590951 (1971-07-01), Berger
patent: 4089390 (1978-05-01), McLain
patent: 5012895 (1991-05-01), Santos
patent: 5165641 (1992-11-01), Southern
patent: 5673768 (1997-10-01), Schmitt et al.
patent: 5797571 (1998-08-01), Brophy
patent: 5816365 (1998-10-01), Ruth
patent: 5850894 (1998-12-01), Busenhart
patent: 6354400 (2002-03-01), Purkayastha
patent: 6390236 (2002-05-01), Eastman
U.S. Appl. No. 10/657,324, filed Sep. 8, 2003.
U.S. Appl. No. 10/662,854, filed Sep. 15, 2003.
U.S. Appl. No. 10/662,855, filed Sep. 15, 2003.
Extension Ladder Accessories; Jul. 14, 2003; http://www.wernerladder.com/acc-ext.htm.
Diggle III Frederick James
Hogeland Robert Clint
Rivers Paul Brent
AT&T Delaware Intellectual Property Inc.
Chin-Shue Alvin
Hartman Jodi
Sutcliffe Geoff
Zimmerman PLLC Scott P.
LandOfFree
Ladder support systems does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Ladder support systems, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Ladder support systems will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3942769