Trailer construction
Abstract
Abstract THE DISCLOSURE ILLUSTRATES A MOLDED FIBERGLASS TRAILER BODY FORMED FROM COMPLEMENTARY UPPER AND LOWER SHELLS JOINED AT A BAND EXTENDING AROUND THE TRAILER. THE LOWER SHELL HAS A SERIES OF TRANSVERSE AND LONGITUDINAL RECESSES IN ITS BOTTOM OUTER SIDE WHICH RECEIVE A LADDER-TYPE STRUCRURAL FRAME. THE RECESSES ARE DIMENSIONED SO THAT THE OUTER BOTTOM SURFACE OF THE TRILER IS FLUSH. THE RESULTANT RIDGES FORMED ON THE INTERIOR OF THE BOTTOM WALL ARE USED TO SUPPORT FLOORING. THE FLOORING AND RIDGES FORM A SERIES OF CAVITIES HAVING A SUBSTANTIAL SURFACE AREA RELATIVE TO THE RIDGES. THESE CAVITIES ARE COATED WITH A LAYER OF URETHANE FOAM TO PROVIDE A HIGHLY EFFECTIVE INSULATION FOR THE FLOORING. ADDITIONALLY, THE INNER SIDE AND TOP WALLS OF THE SHELLS ARE COATED WITH THE FOAMED MATERIAL TO SUBSTANTIALLY INSULATE THE ENTIRE INTERIOR OF THE TRAILER. ONE OF THE CAVITIES FORMED UNDERNEATH THE FLOOR IS ALSO USED TO HOUSE A DRAINAGE SYSTEM FOR WATER UTILIZATION DEVICES, SUCH AS SINK, SHOWER AND PRIVY, POSITIONED IN THE TRAILER.
Inventors
- 👤 Robert F Mccollum
- 👤 Gerald W Ward
Bibliographic Details
Claims Analysis
Total Claims: 0References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-02-22 | 1974-08-24 | 1975-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-22 | 1978-08-24 | 1979-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-22 | 1982-08-24 | 1983-02-23 | $7700.00 | Window Closed / Lapsed |