Nozzle construction for portable carpet cleaning machine

Claim 2

Nozzle construction for a carpet cleaning machine including an outer housing having at least parallel front and rear lip walls, the lower edges of the lip walls forming an elongated nozzle opening; an inner housing having at least parallel front and rear lip walls, the lower edges of thE lip walls forming an elongated spray chamber opening; said inner housing front and rear lip walls being parallel to said outer housing front and rear lip walls; means connected between the inner and outer housings adjustably mounting the inner housing within the outer housing with the inner housing lower lip edges located above the outer housing lower lip edges, and with the inner housing front and rear walls spaced from the outer housing front and rear walls; the parallel spaced housing walls forming first and second passages between the outer and inner housings; means connected with the outer housing and communicating with said first and second passages and a source of air suction; partition means connected with the inner housing front and rear walls dividing the inner housing into an upper fluid chamber and a lower spray chamber; means connected with the inner housing communicating with the fluid chamber and communicating with a source of cleaning solution; and spray nozzle means mounted on the partition means communicating between the fluid and spray chambers for spraying cleaning solution from the fluid chamber through the spray chamber and spray chamber opening onto a carpet to be cleaned; whereby suction air currents passing along the carpet remove from the carpet cleaning solution sprayed from the spray chamber and are drawn through one of said passages and to the source of air suction, whereby simultaneously suction air currents pass along the carpet and are drawn through the other of said passages and to the source of air suction to air clean the carpet, and whereby the size of said passages remains constant throughout adjustment of the inner housing within the outer housing.

Claim 3

The construction defined in claim 1 in which spacer means is provided between the front and rear housing lip walls within the passages; in which said spacer means includes a plurality of projecting members; in which said projecting members extend upwardly from the lip wall edges between said inner and outer housing lip walls; and in which said projecting members are connected to a lip wall of one of said housings and slidably engage a lip wall of the other of said housings preventing relative lateral movement between the inner and outer housing lip walls.

Claim 4

The construction defined in claim 1 in which the inner and outer housing front and rear lip walls are vertical.

Claim 5

Nozzle construction for a carpet cleaning machine including an outer housing having at least front and rear lip walls, the lower edges of the lip walls forming an elongated nozzle opening; an inner housing having at least front and rear lip walls, the lower edges of the lip walls forming an elongated spray chamber opening; means connected between the inner and outer housings adjustably mounting the inner housing within the outer housing with the inner housing lower lip edges located above the outer housing lower lip edges, and with the inner housing front and rear walls spaced from the outer housing front and rear walls; the adjusting means including a tubular member extending through openings formed in the outer and inner housings, said tubular member being secured to the inner housing and adjustably slidable in the outer housing opening, and spring means biasing said inner housing downwardly within the outer housing; the spaced housing walls forming first and second passages between the outer and inner housings; means connected with the outer housing and communicating with said first and second passages and a source of air suction; partition means connected with the inner housing front and rear walls dividing the inner housing into an upper fluid chamber and a lower spray chamber; means connected with the inner housing communicating with the fluid chamber and communicating with a source of cleaning solution; and spray nozzle means mounted on the partition means communicating between the fluid and spray chambers for spraying cleaning solution from the fluid chamber through the spray chamber and spray chamber opening onTo a carpet to be cleaned; whereby suction air currents passing along the carpet remove from the carpet cleaning solution sprayed from the spray chamber and are drawn through one of said passages and to the source of air suction, and whereby simultaneously suction air currents pass along the carpet and are drawn through the other of said passages and to the source of air suction to air clean the carpet.

Claim 6

Nozzle construction for a carpet cleaning machine including an outer housing having at least front and rear lip walls, the lower edges of the lip walls forming an elongated nozzle opening; an inner housing having at least front and rear lip walls, the lower edges of the lip walls forming an elongated spray chamber opening; means connected between the inner and outer housings adjustably mounting the inner housing within the outer housing with the inner housing lower lip edges located above the outer housing lower lip edges, and with the inner housing front and rear walls spaced from the outer housing front and rear walls; the adjusting means including a tubular member extending through openings formed in the outer and inner housings, said tubular member being secured to the inner housing and adjustably slidable in the outer housing opening, and spring means biasing said inner housing downwardly within the outer housing; the spaced housing walls forming first and second passages between the outer and inner housings; means connected with the outer housing and communicating with said first and second passages and a source of air suction; partition means connected with the inner housing front and rear walls dividing the inner housing into an upper fluid chamber and a lower spray chamber; means connected with the inner housing communicating with the fluid chamber and communicating with a source of cleaning solution; and spray nozzle means mounted on the partition means communicating between the fluid and spray chambers for spraying cleaning solution from the fluid chamber through the spray chamber and spray chamber opening onTo a carpet to be cleaned; whereby suction air currents passing along the carpet remove from the carpet cleaning solution sprayed from the spray chamber and are drawn through one of said passages and to the source of air suction, and whereby simultaneously suction air currents pass along the carpet and are drawn through the other of said passages and to the source of air suction to air clean the carpet.

Claim 7

The construction defined in claim 4 in which the tubular member forms part of the means connecting the fluid chamber with a source of cleaning fluid.