# US 4,396,208 A · Trailer

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- Number: US 4,396,208 A
- Document ID: US4396208A
- Status: Granted
- Kind: A
- Application number: 06/252,367
- Filed: 1981-04-09
- Granted: 1983-08-02
- Earliest claimed: 1980-09-11
- Inventors: Kevin E. Koch
- Web page: https://patentgrep.com/patent/US4396208A

## CPC

- B62D 63/064: {light luggage or equipment trailers, e.g. for batteries, gas generators, gas bottles, stretchers (luggage carriers per se B60R)}
- B62D: MOTOR VEHICLES; TRAILERS (steering, or guiding on a desired track, of agricultural machines or implements A01B69/00; wheels, castors, axles, increasing wheel adhesion B60B; vehicle tyres, tyre inflation or tyre changing B60C; connections between vehicles of a train or the like B60D; vehicles for use on rail and road, amphibious or convertible vehicles B60F; suspension arrangements B60G; heating, cooling, ventilating or other air treating devices B60H; windows, windscreens, non-fixed roofs, doors or similar devices, protective coverings for vehicles not in use B60J; propulsion plant arrangements, auxiliary drives, transmissions, controls, instrumentation or dashboards B60K; electric equipment or propulsion of electrically-propelled vehicles B60L; power supply for electrically-propelled vehicles B60M; passenger accommodation not otherwise provided for B60N; adaptations for load transportation or to carry special loads or objects B60P; arrangement of signalling or lighting devices, the mounting or supporting thereof or circuits therefor, for vehicles in general B60Q; vehicles, vehicle fittings or vehicle parts not otherwise provided for B60R; servicing, cleaning, repairing, supporting, lifting, or manoeuvring, not otherwise provided for, B60S; brake arrangements, brake control systems or parts thereof B60T; air-cushion vehicles B60V; motor-cycles, accessories therefor B62J, B62K; testing of vehicles G01M)

## Abstract

A trailer which has a rectangular frame formed by some of its chassis members and a body which comprises a moulding assembly having a base portion and an upper portion, the base portion having a register which engages the rectangular frame and the upper portion having a peripheral zone which engages the periphery of the base portion.

## Claims

### Claim 1

A trailer comprising a chassis having longitudinal and transverse chassis members defining an open rectangular frame, a moulding assembly having a base portion and an upper portion, and wheels,
the base portion having a floor surrounded by vertical walls which merge into horizontal walls to define a register engaged and supported by all the chassis members of the rectangular frame, the base portion having further portions which extend upwardly from the horizontal walls and merge at their upper ends into an outwardly extending peripheral flange and which provide strength in vertical and horizontal planes both at the periphery of the floor and at the periphery of the base portion,
the upper portion having an outer peripheral zone which engages the peripheral flange of the base portion, an upper portion and an inner peripheral lip,
and means joining said outer peripheral zone and said base portion peripheral flange.

### Claim 2 (depends on 1)

A trailer according to claim 1 wherein said chassis comprises a transverse member secured at its ends to the underside of said peripheral frame,
a draw bar extending forwardly from said transverse member and also secured to the underside of said peripheral frame,
said transverse member and draw bar further supporting said floor.

### Claim 3 (depends on 2)

A trailer according to claim 2 comprising wheel arms carrying respective wheels, and resilient mounting means between respective said wheel arms and said transverse member.

### Claim 4 (depends on 1)

A trailer according to claim 1 wherein said upper portion peripheral zone web comprises a web which lies in face to face contiguity with said base portion peripheral flange, and a skirt which surrounds and depends from said web.

### Claim 5 (depends on 4)

A trailer according to claim 4 wherein said upper portion comprises walls extending upwardly from said web, merging into an upper portion which extends inwardly, and downwardly from the upper portion in said inner peripheral lip which defines a charging opening for the trailer.

### Claim 6 (depends on 1)

A trailer according to claim 1 wherein both said base and upper portions are formed from polymeric sheet material by a vacuum forming process.