Fire escape – ladder – or scaffold – Having transpositioning base and erecting means
Reexamination Certificate
2005-09-06
2008-11-11
Mitchell, Katherine (Department: 3634)
Fire escape, ladder, or scaffold
Having transpositioning base and erecting means
C182S069500, C182S069600
Reexamination Certificate
active
07448470
ABSTRACT:
A wheeled maintenance stand for aircraft has a worker platform elevated by a pair of double scissor linkages, which have track and follower connections with a mobile base frame and the worker platform. A staircase with self-leveling steps is connected to a laterally outer side of one of the double scissor linkages. A power unit supplies fluid power for propelling the stand, operating the scissor linkages and steering. The upper worker platform has left, right and center rolling sections. A manually operated brake is provides for each of the rolling sections. Electric power, compressed air and cooling air are supplied to the upper work platform.
REFERENCES:
patent: 159571 (1875-02-01), Schmid
patent: 2828166 (1958-03-01), Herring
patent: 2972392 (1961-02-01), Kurvers
patent: 3126112 (1964-03-01), Shaw et al.
patent: 3263832 (1966-08-01), Williams, Jr. et al.
patent: 3596735 (1971-08-01), Denier et al.
patent: 3687321 (1972-08-01), Goodhart et al.
patent: 4214849 (1980-07-01), Downing
patent: 4930598 (1990-06-01), Murrill et al.
patent: 5145029 (1992-09-01), Blasdell et al.
patent: 5862884 (1999-01-01), Smith
patent: 6405831 (2002-06-01), Daniel, III
patent: 6640928 (2003-11-01), Ridley, Jr.
patent: 6772860 (2004-08-01), Nelson
patent: 6802391 (2004-10-01), Ganiere
patent: 7004286 (2006-02-01), Fredette
patent: 7128186 (2006-10-01), Ganiere
patent: 26 04 141 (1977-08-01), None
patent: 073 00 298 (1995-11-01), None
patent: 2567 181 (1986-01-01), None
patent: 300298 (1995-11-01), None
patent: 2006/063453 (2006-06-01), None
Brown Eugene R.
Nelson Eugene R.
Aluminum Ladder Company
Bradford Candace L.
Mitchell Katherine
Nexsen Pruet , LLC
Schwab Charles L.
LandOfFree
Maintenance stand does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Maintenance stand, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Maintenance stand will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4047478