Vacuum apparatus with concrete housing, and method of constructing same

A vacuum apparatus comprising:

• (a) a fiberglass cylinder having a closed top and bottom wherein said cylinder has a plurality of cutouts thereon providing openings within said cylinder;
• (b) a monolithic concrete outer housing disposed adjacent said fiberglass cylinder surrounding said fiberglass cylinder and enclosing the top and bottom thereon;
• (c) a plurality of doors disposed on said concrete outer housing with said doors extending through said housing and within said plurality of cutouts disposed on said fiberglass cylinder, with at least one of said doors allowing the removal of particles drawn into said fiberglass cylinder;
• (d) a plurality of vacuum motors secured within said fiberglass cylinder by a motor mount plate disposed circumferentially around the inside of said cylinder such that a substantially airtight chamber is defined between the bottom of said cylinder and said motor mount plate, said vacuum motors providing a suction within said fiberglass cylinder when energized;
• (e) a suction tube opening extending through said monolithic concrete outer housing into said fiberglass cylinder and disposed below said motor mount means, said opening having a suction tube fitting therein attached to a suction tube such that when said vacuum motors are energized particles are drawn through said suction tube opening into said fiberglass cylinder.

A method of forming a vacuum apparatus comprising the steps of:

• (a) constructing a hollow inner shell having a closed top and bottom and having a plurality of cutouts disposed thereon;
• (b) attaching a plurality of doors, a suction tube fitting, and a coin operable means within said plurality of cutouts disposed on said inner shell such that said doors, suction tube fitting, and coin operable means fit within said cutouts and extend apart from said inner shell;
• (c) mounting a plurality of vacuum motors within said inner shell such that a substantially airtight chamber is defined between the bottom of said inner shell and said vacuum motors;
• (d) placing an outer housing form around said inner shell such that said outer housing form defines a space around said inner shell and at each end thereon, and such that said plurality of doors abut the inside surface of said form and said suction tube fitting and said coin operable means extend through said outer housing form;
• (e) pouring concrete into said space defined between said inner shell and said outer housing form;
• and,
• (f) during said concrete and removing said form.