Rollover pressure car wash apparatus and methods of operating same

A pressure washer for an object in a washing area comprising:

• a support structure over said area;
• a pair of spray nozzle carrier arms each being of essentially inverted L-shaped configuration and having a first portion extending from a center point toward the periphery of the area and a second contiguous vertical portion disposed adjacent to the area;
• spray nozzles carried by the 1st and 2nd portions of each of said carrier arms;
• a pivot structure connecting said carrier arms to said support structure at said center point to reversely pivot said carrier arms whereby the vertical portions of said carrier arms may be caused to follow reversely similar, essentially mirror image paths which together circumscribe the area;
• and
• means for supplying fluid to the nozzles under pressure.

A pressure washer for an object in a washing area comprising:

• a support structure over said area;
• a pair of spray nozzle carrier arms each being of essentially inverted L-shaped configuration and having a first portion extending from a center point toward the periphery of the area and a second contiguous vertical portion disposed adjacent to the area;
• spray nozzles carried by the 1st and 2nd each of said carrier arms;
• a pivot structure connecting said carrier arms to said support structure at said center point to reversely pivot said carrier arms whereby the vertical portions of said carrier arms may be caused to follow reversely similar, essentially mirror image paths which together circumscribe the area;
• and
• means for supplying fluid to the nozzles under pressure wherein said means for supplying said nozzles with washing fluid comprises at least two fluid sources.

A method of pressure washing a vehicle which is disposed in a washing area comprising the steps of:

• providing a spray nozzle carrier arm of essentially inverted L-shape having a first horizontal portion which is disposed over the area and a contiguous, second vertical portion which is disposed adjacent the periphery of the area;
• causing said carrier arm to circumscribe at least part of the area and to pivot about an end of the arm which is generally over the center of the area;
• and
• supplying washing fluid to the nozzles under pressure.

A method of washing a vehicle having top, front, rear and side surfaces while standing in a washing area comprising the steps of:

• providing a pair of spray nozzle carriers each of essentially inverted L-shape and each having first horizontal portions which overlie the washing area and second vertical portions which are adjacent the washing area;
• causing said carriers to pivot from the inboard distal ends of said horizontal portions in a reversely similar fashion so as to fully circumscribe said area and said vehicle while maintaining a substantially constant spacing from the side surfaces of said vehicle;
• and
• supplying said nozzle carriers with washing fluid under pressure.

A method of washing a vehicle in a washing area comprising the steps of:

• providing a pair of reversibly similar spray nozzle carriers of inverted L-shape having a substantially common pivot center over the area;
• moving the carriers through a butterfly pattern while moving the pivot center along and over the centerline of the vehicle while simultaneously supplying both carriers with fluid;
• and
• moving each carrier sequentially through a butterfly pattern at a predetermined optimal distance from the vehicle while supplying each carrier independently with fluid.