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US 3,944,258 AGranted
Double ended warehouse trailer
AssigneeRoll-Rite, LLC
InventorCarl O. Christensen
Life of this patent
Estimating the term…
Abstract
A reversible warehouse wagon is provided with a jointed bed, tandem-mounted center support wheels, steerable wheels supporting both the ends of the bed and hitch means at both ends of the bed to provide a warehouse wagon that is towable from either end having a short turning radius, high directional stability, improved tracking of a towing vehicle and improved support and control for going up and down ramps.
Claims19
A double front ended warehouse wagon comprising:
- a cargo-supporting bed, said bed including first and second sections semi-permanently joined end-to-end by articulated joint means for pivotal movement of said sections solely about a horizontal axis relative to one another;
- at least a first set of non-steerable wheels mounted beneath said bed at said flexible joint means to support said bed at the center thereof, wherein said first set of wheels comprises at least a first pair of wheels mounted in tandem;
- at least one self-steering wheel secured beneath said bed at each end to support the respective ends of the bed;
- and,
- hitch means secured at each end of said wagon for cooperating with said self-steering wheels for defining a front end at each end of said wagon for hitching said wagon to another vehicle for towing in either direction.
2 more elements
A double front-ended warehouse wagon comprising:
- a substantially rectangular cargo-supporting bed comprising a first section defining a substantially rigid flat cargo-supporting platform, at least a first pair of struts secured beneath and extending downward at one end of said platform for mounting tandem wheels, a support ledge extending across said one end of said platform, a second section defining a substantially rigid flat cargo-supporting platform having one end resting on and supported by said ledge, and resilient means disposed between and semi-permanently securing said first and second sections together for limited relative resilient pivotal movement about a horizontal axis;
- first and second pairs of non-steerable tandem-mounted wheels mounted beneath said bed at the center thereof to said pair of struts;
- at least one self-steering wheel secured beneath said bed at each end for supporting the respective ends of the bed;
- and,
- hitch means secured at each end of said bed for defining a double front-ended wagon and for hitching either front end of said wagon to another vehicle for towing in either direction.
2 more elements
A double ended warehouse wagon comprising:
- a cargo-supporting bed, said cargo-supporting bed comprises a first section defining a substantially rigid flat cargo-supporting platform, at least a first pair of struts secured beneath and extending downward at one end of said platform, a support ledge extending across said one end of said platform, a second section defining a substantially rigid flat cargo-supporting platform having one end resting on and supported by said ledge, and flexible joint means including resilient means comprising a first pair of resilient washers laterally spaced from one another between the ends of said sections and a bolt extending through each washer and connected to each of said sections securing said first and second sections together for limited relative pivotal movement about a horizontal axis;
- at least a first set of wheels mounted beneath said bed at said flexible joint means to support said bed at the center thereof;
- at least one steerable wheel secured beneath said bed at each end to support the respective ends of the bed;
- and,
- hitch means secured at each end of said wagon for hitching said wagon to another vehicle.
2 more elements
A double ended warehouse wagon comprising:
- a cargo-supporting bed comprising a first section defining a substantially rigid flat cargo-supporting platform, at least a first pair of struts secured beneath and extending downward at one end of said platform, a support ledge extending across said one end of said platform, a second section defining a substantially rigid flat cargo-supporting platform having one end resting on and supported by said ledge, resilient means including a pair of washers, one of said washers being secured to one end of each of a pair of bolts disposed between and securing said first and second sections together for limited relative pivotal movement about a horizontal axis;
- at least a first set of wheels mounted beneath said bed at said flexible joint means to support said bed at the center thereof;
- at least one steerable wheel secured beneath said bed at each end to support the respective ends of the bed;
- and,
- hitch means secured at each end of said wagon for hitching said wagon to another vehicle.
2 more elements
Dependencies are inferred from the claim text.