Land vehicles – Wheeled – Extensible
Patent
1981-02-10
1983-08-09
Mitchell, David M.
Land vehicles
Wheeled
Extensible
280 80B, 296 27, B62D 6306
Patent
active
043974767
ABSTRACT:
A full trailer frame is provided including an elongated central member and a pair of opposite end transverse members. The elongated central member is longitudinally extendible and retractable and each end of each transverse member has the base end of a support arm pivotally supported therefrom for angular displacement about an upstanding axis between an extended position with the support arm free end extending outwardly of the corresponding transverse member end and a folded position closely paralleling the central member and projecting toward the remote end of the central member. The free ends of the support arms have wheel journalling spindles pivotally mounted thereon for oscillation about upstanding axes with the spindles being swingable between first positions with the spindles generally paralleling the corresponding support arm and projecting endwise outwardly of the free end thereof and second positions with the spindles disposed at generally right angles relative to the corresponding support arms and projecting laterally outwardly therefrom when the support arms are in the folded position. The spindles may be releasably locked in the first and second positions thereof whereby the trailer may be moved laterally or longitudinally when the support arms are in the extended positions and the trailer may be moved longitudinally when the support arms are in the folded positions.
REFERENCES:
patent: 2209804 (1940-07-01), Ashley
patent: 2706881 (1955-04-01), McDonald
patent: 2981548 (1961-04-01), Taylor
patent: 3134607 (1964-05-01), Doll
patent: 3139288 (1964-06-01), Peterson
patent: 3194578 (1965-07-01), Kiecker
patent: 4232879 (1980-11-01), Boxrud
patent: 4301873 (1981-11-01), Baxter
Bolyard Patricia A.
Bolyard Philip B.
Jacobson Harvey B.
Mar Michael
Mitchell David M.
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