Trailer apparatus

Details Trailer apparatus Trailer apparatus

2007-04-06

2010-06-15

Keenan, James (Department: 3652)

Material or article handling

Self-loading or unloading vehicles

With load-receiving portion, or significant section thereof,...

C414S484000, C414S495000, C280S043230

Reexamination Certificate

active

07736115

ABSTRACT:
A trailer that can be lowered to the floor or ground for loading, and after the trailer is loaded, it can be elevated to a height appropriate for transportation. Six elements are required for the taller to operate: a chassis, two axles (torsion bars), four pivoting arms, four hubs with wheels, two hydraulic cylinders, and a manually operated hydraulic or electric pump.

REFERENCES:
patent: 2827187 (1958-03-01), Elmore
patent: 2835400 (1958-05-01), Latzke
patent: 2838191 (1958-06-01), Schramm
patent: 3240506 (1966-03-01), McMullen
patent: 5161814 (1992-11-01), Walker
patent: 5433578 (1995-07-01), Honan, Jr.
patent: 5630693 (1997-05-01), Sobina
patent: 5775868 (1998-07-01), Mann
patent: 5887880 (1999-03-01), Mullican et al.
patent: 6857643 (2005-02-01), Neider

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