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US 4,362,317 AGranted
Extensible frame structure for trailer type land vehicle
AssigneeArthur C. Brockman
InventorArthur C. Brockman
Life of this patent
Estimating the term…
Abstract
Shoes anchored to the webs of the I-beams of a sliding frame slide on the inboard lower flanges of the I-beams of the fixed frame, and a longitudinal rail on each said lower flange prevents lateral disengagement of the shoes therefrom. The I-beams of the two frames have the same height.
Claims14
In a trailer type land vehicle, longitudinally extensible frame structure which comprises,
- a first frame section having beams secured in longitudinally extending laterally spaced relation,
- each beam having a vertical web and a lower flange portion which extends laterally inboard of said web, said flange portion having an exposed upper surface,
- a second frame section having beams secured in longitudinally extending laterally spaced relation,
- each of the latter said beams having a vertical web and a lower flange portion which extends laterally outward thereof,
- the webs of said second frame section being disposed between said flange portions of said first frame section,
- said flange portions of said second frame section projecting laterally beneath said flange portions of said first frame section,
- shoe means projecting laterally outboard of each web in said second frame section and having a lower surface,
- said lower surfaces being slideably engaged in load transmitting relation respectively on said upper surfaces,
- said beams of said second frame section having a height not substantially less than that of the beams of said first frame section,
- and means forming a longitudinally extending rail projecting upward from each flange portion of said first section inboard of said upper surface, said rails being effective to contain said shoe means against lateral disengagement from said upper surfaces.
7 more elements
In a trailer type land vehicle a longitudinally extensible frame structure comprising,
- a main frame section constructed and arranged to be supported by ground engaging wheels and having beams secured in longitudinally extending and laterally spaced apart generally parallel relation,
- each beam of said main frame section having a vertical web and a lower flange portion extending laterally of said web and having an exposed upper surface,
- a slide frame section having beams secured in longitudinally extending and laterally spaced apart generally parallel relation,
- each beam of said slide frame section having a vertical web and a lower flange portion extending laterally of said web,
- said webs of one of said frame sections being disposed between said webs of the other of said frame sections with said beams of said slide frame section extending in part generally longitudinally beyond one end of said beams of said main frame section,
- said flange portions of said beams of one of said frame sections extending laterally inwardly of their associated webs and said flange portions of said beams of the other of said frame sections extending outwardly of their associated webs,
- said lower flange portions of said slide frame section lapping, underlying and slideably engaging said lower flange portions of said beams of said main frame section,
- the free edge of the lower flange portion of each beam of said main frame section lies closely adjacent the web of its associated beam of the slide frame section,
- a shoe fixed to said web of each said beam of said slide frame section and having a runner lapping, overlying and lying closely adjacent to said upper surface of a lower flange portion of an associated beam of said main frame section for sliding and load transmitting engagement therewith,
- said webs of said beams of said slide frame section having a height which is not substantially less than the height of said webs of said beams of said main frame section.
7 more elements
Dependencies are inferred from the claim text.