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2. Dolly (trailer) - Wikipedia

   en.wikipedia.org/wiki/Dolly_(trailer)

   Large semi-trailer of truck size is designed for connection via the fifth wheel on the tractor unit or the semi-trailer truck. Small semi-trailer such as travel trailer and boat trailer is designed for connection via a tow hitch of a passenger vehicle. Either the fifth wheel or the tow hitch takes up to half the load of the semi-trailer.

3. Boat trailer - Wikipedia

   en.wikipedia.org/wiki/Boat_trailer

   The trailer is also used for storage. Roll-on, also known as a "Roller style trailer", uses rubber and/or polyurethane rollers for ease of launching and loading a boat. Glide-path, also known as a "Float-on style trailer", allows the boat to float onto the trailer; after the trailer has been partially submerged (usually 3 ⁄ 4 of the trailer ...

4. Boat dolly - Wikipedia

   en.wikipedia.org/wiki/Boat_dolly

   A boat dolly or boat trolley, also called a launching dolly or launching trolley or simply a dolly or trolley, is a device for launching small boats into the water. It is generally smaller than a boat trailer with smaller wheels and is not suitable for towing a boat on the road.

5. Tow hitch - Wikipedia

   en.wikipedia.org/wiki/Tow_hitch

   The trailer tongue (North America) or coupling (outside North America) slips over a trailer hitch ball attached to a receiver hitch mount or integral with the hitch. A larger, heavy-duty gooseneck ball size: 3 in (76.2 mm) is typically used for towing greater than 10,000 pounds (4.5 t), and this towing capacity falls outside of the scope of SAE ...

6. Fifth-wheel coupling - Wikipedia

   en.wikipedia.org/wiki/Fifth-wheel_coupling

   The fifth-wheel coupling provides the link between a semi-trailer and the towing truck, tractor unit, leading trailer or dolly. The coupling consists of a kingpin , a 2-or- 3 + 1 ⁄ 2 -inch-diameter (50.8 or 88.9 mm) vertical steel pin protruding from the bottom of the front of the semi-trailer, and a horseshoe-shaped coupling device called a ...

7. Trailer (vehicle) - Wikipedia

   en.wikipedia.org/wiki/Trailer_(vehicle)

   Utility trailer with a folded loading ramp A boat on a single-axle trailer. A trailer is an unpowered vehicle towed by a powered vehicle. It is commonly used for the transport of goods and materials.There are two general categories of trailers: the full trailer and the semitrailer.

8. Flatbed trolley - Wikipedia

   en.wikipedia.org/wiki/Flatbed_trolley

   A piano trolley or piano dolly is a two- or four-wheeled trolley featuring a stronger-than-usual frame. [4] They are typically measuring approximately 50 to 80 cm (19 + 5 ⁄ 8 to 31 + 1 ⁄ 2 in) long and are used by removals companies for moving pianos.

9. Towing - Wikipedia

   en.wikipedia.org/wiki/Towing

   Non-containerized tractor-trailer boxes are also fairly common, and work much like containers, above, but frequently with the stand and dolly integrated permanently into the box. Trailers for speciality applications that may require a specialized vehicle, such as a farm tractor; military truck, tank, or personnel carrier; or an unusually large ...