System and method for cleaning carpet and the like
First Claim
1. A wand with which a liquid is removed from a carpet, the wand comprising:
- an elongated conduit connectable at one end to a vacuum source for drawing liquid from the carpet through the other end of the conduit, the conduit including a hood portion at said other end of the conduit wherein the hood portion includes first and second downwardly-opening compartments wherein each of the first and second hood portion compartments has a mouth having edges which contact the carpet during a liquid-removal operation performed with the wand and a port disposed downstream of the mouths through which the interiors of the compartments are capable of communicating, the first of the hood portion compartments being in direct flow communication with a vacuum source by way of said one end of the conduit so that a vacuum is generated within the interior of the first hood portion compartment by the vacuum source during a liquid-removal operation; and
valve means associated with the port for limiting the pressure of the vacuum generated within the interior of the first hood portion compartment to a preselected vacuum pressure level so that upon generation of the preselected vacuum pressure level within the first hood portion compartment, air is permitted to enter the interior of the first hood portion compartment from the interior of the second hood portion compartment thereby drawing air through the mouth of the second hood portion compartment so that all of the air which is drawn toward the vacuum source by way of the elongated conduit of the wand is drawn through one or both mouths of the first and second hood portion compartments.
1 Assignment
0 Petitions
Accused Products
Abstract
A system for cleaning carpets and other textiles utilizing an applicator wand with which a cleaning liquid is spray-applied to the carpet and with which the cleaning liquid and loosened debris are removed from the carpet under the influence of a vacuum created by a vacuum pump. The applicator wand includes an operator-controlled aerator valve through which air can be introduced into the flow of cleaning liquid routed to the dispensing nozzles of the wand to thereby permit an operator to readily adjust the condition of the liquid being applied to the carpet between an aerated and a non-aerated condition. In addition, the applicator wand utilizes a flow restrictor valve to limit the strength of the vacuum generated at the lower edges of the wand at an amount acceptable to pull a substantial amount of liquid from the carpet while preventing the creation of an undesirable seal between the lower edges of the wand and the carpet. In addition, a dryer attachment for use with the vacuum of the system utilizes a rotatable brush for disturbing the fibers of the carpet as the attachment is moved thereacross, an air-powered turbine for rotating the brush, and a blower and air-heating components for introducing heated air over the fibers of the carpet being disturbed by the brush.
-
Citations
5 Claims
-
1. A wand with which a liquid is removed from a carpet, the wand comprising:
-
an elongated conduit connectable at one end to a vacuum source for drawing liquid from the carpet through the other end of the conduit, the conduit including a hood portion at said other end of the conduit wherein the hood portion includes first and second downwardly-opening compartments wherein each of the first and second hood portion compartments has a mouth having edges which contact the carpet during a liquid-removal operation performed with the wand and a port disposed downstream of the mouths through which the interiors of the compartments are capable of communicating, the first of the hood portion compartments being in direct flow communication with a vacuum source by way of said one end of the conduit so that a vacuum is generated within the interior of the first hood portion compartment by the vacuum source during a liquid-removal operation; and valve means associated with the port for limiting the pressure of the vacuum generated within the interior of the first hood portion compartment to a preselected vacuum pressure level so that upon generation of the preselected vacuum pressure level within the first hood portion compartment, air is permitted to enter the interior of the first hood portion compartment from the interior of the second hood portion compartment thereby drawing air through the mouth of the second hood portion compartment so that all of the air which is drawn toward the vacuum source by way of the elongated conduit of the wand is drawn through one or both mouths of the first and second hood portion compartments. - View Dependent Claims (2, 3, 4, 5)
-
Specification