A tractor trailer roof heater apparatus for preventing snow and ice accumulation includes a reservoir configured to hold heater oil within an inner cavity and configured to be coupled to a tractor trailer. A heater is coupled to a bottom side of the reservoir within the inner cavity and is configured to heat the heater oil. A pump is coupled to a top side of the reservoir and has a draw tube extending through a pump aperture into the inner cavity to draw the heater oil from the reservoir and push it through an outlet aperture through an oil tube. The oil tube is configured to be coupled within a roof of the tractor trailer to carry hot heater oil from the pump and then return the heater oil to the reservoir. A power supply is coupled to the pump and a thermostat is coupled to the reservoir.

A tractor trailer roof heater apparatus for preventing snow and ice accumulation includes a reservoir configured to hold heater oil within an inner cavity and configured to be coupled to a tractor trailer. A heater is coupled to a bottom side of the reservoir within the inner cavity and is configured to heat the heater oil. A pump is coupled to a top side of the reservoir and has a draw tube extending through a pump aperture into the inner cavity to draw the heater oil from the reservoir and push it through an outlet aperture through an oil tube. The oil tube is configured to be coupled within a roof of the tractor trailer to carry hot heater oil from the pump and then return the heater oil to the reservoir. A power supply is coupled to the pump and a thermostat is coupled to the reservoir.

An apparatus for shedding material accumulated on a surface is disclosed. The apparatus is an elastic expandable vessel with fluid inlet and outlet. The elastic expandable vessel is fixed to the surface in a flat shape. Upon the introduction of fluid into the expandable vessel, the expandable vessel expands into a domed shape so that material accumulated on the surface slides off under the influence of gravity. Upon the egress of fluid out of the expandable vessel, the expandable vessel flattens.

A reconfigurable inflatable pickup truck box cover includes a base frame, a side wall system operatively connected to the base frame, and a top wall operatively connected to the side wall system. At least one of the base frame, the side wall system, and the top wall is inflatable.