Land vehicles – Wheeled – Articulated vehicle
Reexamination Certificate
2009-04-09
2010-12-07
Morris, Lesley (Department: 3611)
Land vehicles
Wheeled
Articulated vehicle
C280S411100, C280S405100, C280S407100, C280S474000, C280S475000, C280S476100, C414S483000
Reexamination Certificate
active
07845668
ABSTRACT:
A dual trailer has a first trailer with a king pin for a tractor and a rear fifth wheel for the king pin of a second trailer. The rear end of the first trailer and the front end of the second trailer is lifted into an empty transport position so that the first and second trailers are supported solely on the tractor and the rearmost axle of the second trailer. The remaining axles are held raised from the ground by the lifting of the trailers and by an individual lifting hook supporting the axle raised relative to the frame. In the empty transport position, the first and second trailers are maintained as a single integral trailer in a directly aligned position. Each axle includes an air bag so that the hook is engaged when the axle is raised relative to the frame by releasing the air from the bag.
REFERENCES:
patent: 2126819 (1938-08-01), Schawiem
patent: 3101958 (1963-08-01), Geron
patent: 4589670 (1986-05-01), Sweetin
patent: 7017934 (2006-03-01), Harris
patent: 2010/0001489 (2010-01-01), Lundin
patent: 2010/0172727 (2010-07-01), Watkins
Ade & Company Inc
Arce Marlon A
Battison Adrian D.
Morris Lesley
LandOfFree
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