Fire escape – ladder – or scaffold – Door and ladder
Reexamination Certificate
2006-02-07
2006-02-07
Thompson, II, Hugh B. (Department: 3634)
Fire escape, ladder, or scaffold
Door and ladder
C182S095000, C182S097000
Reexamination Certificate
active
06994184
ABSTRACT:
A folding ladder is configured for installation in an opening to provide access between one floor or space and another floor or space. The folding ladder includes, in one aspect, an upper ladder section having a left ladder rail and a right ladder rail, a lower ladder section having a left ladder rail and a right ladder rail, a hinge rotatably connecting the upper ladder section ladder rails to the lower ladder section ladder rails, and a plurality of steps rotatably disposed between the upper and lower ladder rails. The plurality of steps are configured for rotation between a retracted position and a deployed position. At least one step disposed between the upper ladder rails and at least one step disposed between the lower ladder rails are linked by at least one linkage member so that each of the noted steps rotates between a retracted position and a deployed position upon rotational movement of the upper ladder section relative to the lower ladder section between a closed position and an open position.
REFERENCES:
patent: 740460 (1903-10-01), Naylor
patent: 2649273 (1953-08-01), Bjorklund et al.
patent: 2852176 (1958-09-01), Harmon
patent: 3051261 (1962-08-01), Webb, Sr. et al.
patent: 3169603 (1965-02-01), Amic, Sr.
patent: 4016954 (1977-04-01), Hickman
patent: 4281743 (1981-08-01), Fuller
patent: 4541508 (1985-09-01), Lundh
patent: 4560030 (1985-12-01), Mucelli
patent: 4723631 (1988-02-01), Tremblay
patent: 4757876 (1988-07-01), Peacock
patent: 4815564 (1989-03-01), Yoo
patent: 5111906 (1992-05-01), Abadia
patent: 5195610 (1993-03-01), Chang
patent: 5685394 (1997-11-01), Simson
patent: 5967257 (1999-10-01), Begin et al.
patent: 6802393 (2004-10-01), Zheng
patent: 6866118 (2005-03-01), Battenberg
patent: 6886661 (2005-05-01), Battenberg
patent: 004 864 (2001-12-01), None
patent: 636 166 (1983-05-01), None
Bendickson Roy B.
Brown Christine A.
Burig Ronald K.
Fiumefreddo John J.
Latimer Brett A.
McDermott Will & Emery LLP
Thompson II Hugh B.
Werner Co.
LandOfFree
Stowable ladder configured for installation in an opening does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Stowable ladder configured for installation in an opening, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Stowable ladder configured for installation in an opening will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3680771