Abstract: A vehicle may include a frame having a first portion, a second portion, and a tiller. The first portion may be coupled to a front wheel and to the tiller. The second portion may be coupled to a rear wheel and detachably coupled to the first portion. A method of transitioning the vehicle between a folded configuration and an unfolded configuration may include rotating the first portion of the frame relative to the second portion of the frame between the folded configuration and unfolded configuration to cause the first portion of the frame to lock to the second portion of the frame.

Abstract: A vent apparatus for peaks of sloped roofs formed of roofing sheets include a number of roof tiles, a longitudinal vent gap between the roofing sheets at the peak, two rail members, one rail member being secured to the roofing sheets longitudinally along each side of the vent gap, where the rail members are laterally spaced apart from each other a distance, each rail member including an upright side wall portion, a fastening flange portion angling downwardly and outwardly from the lower edge of the side wall portion to rest against the roofing sheets, a series of tile fastening blocks fitted between the rail members and spaced apart from each other a distance substantially matching the length of the individual the roof tiles, a series of the tiles placed in overlapping fashion and longitudinally along and straddling both of the rail members, each tile having a higher end which rests on top of the lower end of the next tile in the series of the tiles so that the overlapping tile segments are located over posit