Land vehicles – Wheeled – Convertible
Patent
1974-11-08
1976-03-16
Goodman, Philip
Land vehicles
Wheeled
Convertible
29452, 52143, 280 29, B60R 2700, E04B 504, E04H 102
Patent
active
039442420
ABSTRACT:
A new supporting structure for a mobile home comprising pre-stressed concrete and a method for making same. The supporting structure comprises a rectangular floor, supported by beams on the lower surface of the floor. A pair of large longitudinal beams are formed on the lower surface of the floor adjacent the longitudinal edge of the floor. A plurality of smaller transverse beams are formed on the lower surface of the floor connecting the longitudinal beams. Both the longitudinal and transverse beams are pre-stressed. Means for attaching wheels and a towing hitch are provided. The supporting structure is cast in a single piece in a bed provided with channels for the longitudinal and transverse beams. The beams are pre-stressed in a conventional manner either by pre-tensioning or post-tensioning tendons. After the concrete has set and the tendons anchored, the supporting structure is lifted out, and wheels and a towing hitch attached. Walls and the upper structure are later attached by means of studs cast in the concrete floor.
REFERENCES:
patent: 2322841 (1943-06-01), Foster
patent: 2590685 (1952-03-01), Coff
patent: 3109440 (1963-11-01), Schjeldahl et al.
patent: 3806147 (1974-04-01), Hanson
patent: 3811722 (1974-05-01), Jones
Fails James C.
Goodman Philip
Smith Milton L.
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