Aspirator for a tub/shower diverter assembly

A tub/shower diverter aspirator for being positioned in a fitting having a straight bore therethrough, with a lower outlet and upper outlet of the bore in fluid communication with a shower head, said lower outlet of the bore in fluid communication with a tub spout, said fitting having at least one side inlet;

• said aspirator characterized by:
• a cylindrical section extending in said bore laterally spaced from said at least one side inlet and extending below said side inlet;
• said cylindrical section having an outer radius sized such that an annular clearance is formed between said cylindrical section and an inner wall of said bore with said annular clearance having a cross-sectional area smaller than the cross-sectional area of said at least one side inlet, said annular clearance having a first sealed end and a second open end;
• a sealing means for sealing said first end of said annular clearance above said at least one side inlet, a second end of said annular clearance being in open communication to said bore below said at least one side inlet and said lower outlet;
• a passage means having one end adjacent the second end of said annular clearance, said passage means extending through the interior of said cylindrical section and past the sealing means and fluidly in open communication with said upper outlet such that a negative pressure is exerted on said one end of said passage means created by fluid flow through said annular clearance to said lower outlet;
• and
• said one end of the passage means having a radial outwardly deflector section toward said annular clearance and axially facing said passage means.

A tub/shower diverter aspirator for being positioned in a fitting having a straight bore therethrough, a side inlet, a first end of the bore defining an upper outlet in communication with a shower head and a second end of the bore defining a lower outlet in communication with a tub spout, said aspirator characterized by:

• a first passage means having a cross-sectional area smaller than said inlet to its first end such that its forming a venturi therethrough to its second end;
• a sealing means sealing said passage from said first end of said bore;
• a second passage having a radially extending first end laterally in communication with the first passage;
• said second passage extending through said sealing means to be in open communication with the first end of the bore.

A tub/shower diverter aspirator for being fitted in a fitting having an upper outlet being in fluid communication with a shower head and a lower outlet being in fluid communication with a tub spout;

• said aspirator characterized by:
• a tubular body having an upper end with a fastening means for fastening said body to said fitting;
• said tubular body having a lower end section with an annular opening therethrough;
• a passage means in communication with said annular opening and axially extending through said tubular body to said upper end such that it is in open communication with said upper outlet.

A tub/shower diverter aspirator characterized by:

• a tubular body having a radially enlarged upper end having threaded means constructed for sealingly fastening said body to a threaded bore in a fitting;
• said tubular body having an outer depending cylindrical section having an internally tapered end;
• said tubular body having a fixed inner depending cylindrical section coaxially mounted with said outer cylindrical section to form an annular space therebetween;
• a venturi cap member having a means for fixedly connecting to said inner depending cylindrical section;
• the inner depending cylindrical section having an end constructed to be fastened to said venturi cap member;
• said venturi cap member having a frusto-conical surface extending radially outward to a cylindrical surface having a diameter slightly less than an outer diameter of said outer depending cylindrical section;
• the tapered end of said outer depending cylindrical section being axially spaced from said cylindrical surface of said venturi cap to form a substantially vertically extending annular opening in communication with said annular space, said annular opening being free from any obstructing support rib extending between said outer depending cylindrical section and said venturi cap.

A two piece tub/shower diverter aspirator characterized by:

• a body member having a first end constructed to be sealingly fitted in a pipe fitting;
• said body member having a fixed depending tubular section with a passage axially passing therethrough;
• an attachment means radially within said tubular section for fixedly attaching a deflector member thereto;
• said deflector member having a corresponding attachment means for connection with said attachment means of said body member;
• said deflector member having an outer perimeter axially spaced from an end of said tubular member to define an annular inlet between said deflector member and said body member, said annular inlet extending in an axial direction with respect to said body member and in fluid communication with said passage;
• said deflector member having a solid radially extending surface inside said perimeter to direct substantially all flow through said annular member.