Cleaning implement

A cleaning implement includes a cleaning head having a cleaning operation surface on a bottom, a holding portion arranged on the side opposite the cleaning head, a pipe for coupling the cleaning head and the holding portion, and a valve opening and closing device provided to the pipe so as to be able to hold a first container for receiving a first fluid or a second container for receiving a second fluid. The holding portion includes a lever coupled to the valve opening and closing device so as to open and close a first valve of the first container or a second valve of the second container. A first ejection nozzle can eject the first fluid forward of the cleaning head, and a second ejection nozzle can eject the second fluid rearward of the cleaning head.

This application is based on and claims the benefits of priories from Japanese Patent Application No. 2005-108307, filed on Apr. 5, 2005 and Japanese Patent Application No. 2006-007997, filed on Jan. 16, 2006, the contents of which are incorporated herein by reference.

BACKGROUND OF THE INVENTION

1. Field of the Invention

The present invention relates to cleaning implement. More particularly, the present invention relates to cleaning implements adapted to covers for floors or carpets, for example, and including a liquid supply device.

2. Related Art

By way of example, a cleaning implement including a liquid supply device is designed to have a cleaning head arranged at a distal end of a stem and a manual operation part arranged at a grip of the stem. A pressure-pump-type discharge container and a pump pusher are arrange at the distal end of the stem, and a coupling member for coupling the manual operating part to the pump pusher is arranged along the stem. By manual operation applied to the manual operation part, the pressure-pump-type discharge container is pressed through the coupling member and the pump pusher, discharging a solution from the discharge container to the cleaning head. Refer, for example, to Patent Document 1 (Japanese Published Unexamined Patent Application 2004-337454).

According to Patent Document 1, the cleaning implement allowing wet wiping is provided, which can operate quietly, discharge a solution stably, and contribute to weight reduction.

SUMMARY OF THE INVENTION

According to Patent Document 1, a solution can be sprayed forward of the cleaning head and in the vicinity thereof from a pump spray nozzle. However, when a polish or a wax is applied and wiped away on the floor, if cleaning operation is carried out in advance, an operator will step on the applied floor, raising a problem of leaving footprints, etc. on the applied floor, for example.

The cleaning implement constructed to spray a solution forward of the cleaning head and in the vicinity thereof sometimes raises a problem that a solution may be sprayed on interior furniture or electrical appliance. A cleaning implement may be considered that can spray a solution forward or rearward of the cleaning head by the operator's choice. This is a problem to be solved by the present invention.

In order to solve the above problem, an object of the present invention is to provide a cleaning implement including a cleaning head and a valve opening and closing device connected to the cleaning head and able to hold a first container receiving a first fluid or a second container receiving a second container, in which the cleaning implement can spray a solution forward or rearward of the cleaning head by operator's choice.

In order to achieve the above object, inventors have invented the following new cleaning implement configured such that a valve opening and closing device includes a connection mechanism from which a first container is detachable and an adaptor coupled to the connection mechanism and from which a second container is detachable, wherein a first circulation path extends to a first ejection nozzle for ejecting a first fluid from the connection mechanism to the outside of the cleaning head, and a second circulation path extends to a second ejection nozzle for ejecting a second fluid from the adapter.

In a first aspect of the present invention, a cleaning implement includes: a cleaning head; and a holding portion, a fluid being able to be ejected rearward of the cleaning head when using the cleaning implement by positioning the cleaning head at the front and the holding portion at the rear.

By way of example, the cleaning head may have a cleaning operation surface on a bottom, and the holding portion is arranged on the side opposite the cleaning head. The cleaning head and the holding portion are coupled by a pipe, for example. According to the first aspect of the present invention, when using the cleaning implement by positioning the cleaning head at the front and the holding portion at the rear, a fluid can be ejected rearward of the cleaning head. The fluid may be, for example, a second fluid as will be described later. By way of example, the cleaning implement according to the first aspect of the present invention can eject the second fluid such as polish or wax to the floor, and a user can apply the second fluid on the floor toward the rear. Thus, the user will not step on the applied floor. Moreover, since the second fluid is ejected to a space between the user and the cleaning head, the probability of spraying a solution on interior furniture or electrical appliance is reduced.

In a second aspect of the present invention, a cleaning implement includes: a cleaning head having a cleaning operation surface on a bottom; a holding portion arranged on the side opposite the cleaning head; a pipe that couples the cleaning head and the holding portion; and a valve opening and closing device provided to the pipe, the valve opening and closing device being able to hold one of a first container receiving a first fluid and a second container receiving a second container, the valve opening and closing device including a connection mechanism from which the first container is detachable and an adaptor coupled to the connection mechanism and from which the second container is detachable, the cleaning head including a first ejection nozzle which ejects the first fluid from the connection mechanism to the outside of the cleaning head, the adapter including a second ejection nozzle which ejects the second fluid from the adapter, the holding portion including a lever coupled to the valve opening and closing device, the lever opening and closing the first valve of the first container or the second valve of the second container, in which the first ejection nozzle can eject the first fluid forward of the cleaning head, and the second ejection nozzle can eject the second fluid rearward of the cleaning head when using the cleaning implement by positioning the cleaning head at the front and the holding portion at the rear.

The second aspect of the present invention includes a cleaning head having a cleaning operation surface on a bottom. Also, it includes a holding portion arranged on the side opposite the cleaning head. A pipe couples the cleaning head and the holding portion. A valve opening and closing device is provided to the pipe. The valve opening and closing device can hold a first container for receiving a first fluid or a second container for receiving a second fluid.

By way of example, the cleaning head may have a cleaning sheet detachably attached to the cleaning operation surface. The pipe may be a holding stem, and may be configured by connecting a plurality of pipes, for example. The valve opening and closing device may not be mounted at the position between the cleaning head and the holding portion, but at the position close to the cleaning head or at the position close to the holding portion. The valve opening and closing device is mounted, preferably, at the position close to the cleaning head. With the first and second containers, either of the two may be mounted to the valve opening and closing device without being both mounted thereto. The valves designate valves of the first and second containers. By actuation of the valve opening and closing device, the first or second fluid is ejected.

According to the second aspect of the present invention, the valve opening and closing device includes a connection mechanism from which the first container is detachable. It also includes an adapter coupled to the connection mechanism and from which the second container is detachable. The cleaning head includes a first ejection nozzle that ejects the first fluid from the connection mechanism to the outside of the cleaning head. The adapter includes a second ejection nozzle that ejects the second fluid from the adapter.

By way of example, provided to the connection mechanism are a cam device and pump as will be described later and for feeding the first fluid from the first container to the first ejection nozzle. The valve opening and closing device has a structure that allows the second container in place of the first container to be detached therefrom through the adapter. A path extending from the connection mechanism to the first ejection nozzle forms the first circulation path through which the first fluid can be ejected from the cleaning head. Furthermore, a path extending from the adapter to the second ejection nozzle forms the second circulation path through which the second fluid can be ejected from the adapter by interrupting the first circulation path.

According to the second aspect of the present invention, the holding portion includes a lever. The lever is coupled to the valve opening and closing device. The lever opens and closes the first valve of the first container or the second valve of the second container.

By way of example, as will be described layer, the holding portion includes a pulley rotated interlockingly with rotary motion of the lever. The connection mechanism includes the cam device including a rocker arm forming a dynamic articulation that reciprocates angularly and a pusher following the rocker arm to reciprocate linearly. When the lever is coupled to the valve opening and closing device, the belt may have one end caught at a moving end of the rocker arm and the other end wound on the pulley so as to transmit a displacement of the lever to the pusher. By interlocking the adaptor with displacement motion of the pusher, the second valve of the second container is opened and closed, for example.

According to the second aspect of the present invention, when using the cleaning implement by positioning the cleaning head at the front and the holding portion at the rear, the first ejection nozzle can eject the first fluid forward of the cleaning head, and the second ejection nozzle can eject the second fluid rearward of the cleaning head.

By way of example, the first fluid may be water, a liquid detergent or a liquid wax, and the second fluid may an atomized wax or a foamed wax. By operating the lever, the second fluid is ejected from the spout of the second ejection nozzle. The term “when using” may be, for example, a state while the cleaning head is placed on the floor, the holding portion is held by user's hands, and the pipe is operated at an angle of inclination of about 45 degrees. The first ejection nozzle can eject the first fluid forward of the cleaning head, or the second ejection nozzle can eject the second fluid rearward of the cleaning head. The second fluid may be ejected to a space between the cleaning head and the user. The second fluid is ejected in the direction substantially parallel to the pipe, for example. The second fluid is ejected, preferably, in the range of an open angle of plus or minus 20 degrees with respect to the direction substantially parallel to the pipe. The wording “ejected” includes a case in which the second fluid is diffused like a fine spray.

Thus, the cleaning implement according to the second aspect of the present invention is a cleaning implement including a cleaning head and a valve opening and closing device connected to the cleaning head and being able to hold a first container receiving a first fluid or a second container receiving a second container, in which the cleaning implement can spray a solution forward or rearward of the cleaning head by operator's choice.

The valve opening and closing device includes a connection mechanism from which a first container is detachable and an adaptor coupled to the connection mechanism and from which a second container is detachable, in which a first circulation path extends to a first ejection nozzle for ejecting a first fluid from the connection mechanism to the outside of the cleaning head, and a second circulation path extends to a second ejection nozzle for ejecting a second fluid from the adapter.

By way of example, the cleaning implement according to the second aspect of the present invention can eject the second fluid such as polish or wax from the second ejection nozzle to the floor, and the user can apply the second fluid on the floor toward the rear. Thus, the user will not step on the applied floor. Moreover, since the second fluid is ejected from the second ejection nozzle to a space between the user and the cleaning head, the probability of spraying a solution on interior furniture or electrical appliance is reduced.

In a third aspect of the present invention, a cleaning implement according to the second aspect of the present invention has a second ejection nozzle that includes a spout to eject the second fluid in the direction substantially parallel to the pipe.

A spout of the second ejection nozzle is arranged, for example, at a position away from the pipe by a predetermined distance so as to eject the second fluid toward the floor. The wording “eject the second fluid in the direction substantially parallel to the pipe” includes ejection in the range of a predetermined open angle with respect to the direction substantially parallel to the pipe. The predetermined open angle is, preferably, in the range of plus or minus 20 degrees. The second fluid is ejected from the second ejection nozzle toward the floor in accordance with operation of the lever.

In a fourth aspect of the present invention, a cleaning implement according to the second or third aspect of the present invention has a connection mechanism connected to the first valve of the first container.

According to the fourth aspect of the present invention, since the first valve of the first container is operated directly, the mechanism of the cleaning implement can be simplified, resulting in cost reduction of the cleaning implement.

In a fifth aspect of the present invention, a cleaning implement according to any one of the second to fourth aspect of the present invention has a first container that is of a type of a bottle, the bottle being moved in the direction parallel to an axis of the first valve so as to drop the first fluid naturally.

According to the fifth aspect of the present invention, the first container can be of a type of a bottle which is commercially available. The first container ensuring natural dropping of the first fluid suitable for cleaning can be mounted to the cleaning implement.

In a sixth aspect of the present invention, a cleaning implement according to any one of the second to fifth aspects of the present invention has a second ejection nozzle connected to the second valve of the second container.

According to the sixth aspect of the present invention, since the second ejection nozzle is directly connected to the second valve, the mechanism of the cleaning implement can be simplified, resulting in cost reduction of the cleaning implement.

In a seventh aspect of the present invention, a cleaning implement according to any one of the second to sixth aspects of the present invention has a second container that is a tilt-type spray can, the tilt-type spray can being tilted in the direction orthogonal to an axis of the second valve so as to eject the second fluid.

According to the seventh aspect of the present invention, since a tilt-type spray can for receiving a polish or a wax suitable for application on the floor can be mounted to the cleaning implement, for example, the second fluid suitable for application on the floor can be used easily.

In an eighth aspect of the present invention, a cleaning implement according to any one of the second to seventh aspects of the present invention has a connection mechanism that includes a cam device including a rocker arm forming a dynamic articulation that reciprocates angularly and a pusher following the rocker arm to reciprocate linearly, the holding portion including a pulley rotated interlockingly with rotary motion of the lever and a belt having one end caught at a moving end of the rocker arm and the other end wound on the pulley, the belt transmitting a displacement of the lever to the pusher.

According to the eighth aspect of the present invention, the belt may be used as a means for transmitting motion of the lever of the holding portion to the rocker arm of the connection mechanism, providing excellent flexibility. Thus, even if an articulation part exists between the holding portion and the connection mechanism, motion of the lever of the holding portion can surely be transmitted to the rocker arm.

In a ninth aspect of the present invention, a cleaning implement according to the eighth aspect of the present invention has an adaptor that includes a cylindrical adaptor main body, a cylinder held inside the adaptor main body to be movable axially and the second ejection nozzle coupled to the cylinder, the adaptor main body having one end having a first connection port detachably held to the connection mechanism and the other end having a second connection port for detachably holding the second container, the cylinder having one end abutting on a distal end of the pusher toward the first connection port and the other end having an inclined portion that intersects the axial direction of the cylinder at an acute angle toward the second connection port, in which the second ejection nozzle is formed in a T-shape, the T-shaped second ejection nozzle having one end coupled to the inclined portion and the other end connected to the second valve, the T-shaped second ejection nozzle having a spout at a T-shaped end for ejecting the second fluid to the outside of the adaptor main body.

According to the ninth aspect of the present invention, the adapter includes a cylindrical adapter main body. It also includes a cylinder movably held inside the adaptor main body to be movable axially. It further includes the second ejection nozzle coupled to the cylinder. The adaptor main body has one end having a first connection port detachably held to the connection mechanism and the other end having a second connection port for detachably holding the second container.

According to the ninth aspect of the present invention, the cylinder has one end abutting on a distal end of the pusher toward the first connection port and the other end having an inclined portion that intersects the axial direction of the cylinder at an acute angle toward the second connection port. The second ejection nozzle is formed in a T-shape. The T-shaped second ejection nozzle has one end coupled to the inclined portion and the other end connected to the second valve. The T-shaped second ejection nozzle has a spout at a T-shaped end for ejecting the second fluid to the outside of the adaptor main body.

A weight reduction can be achieved, for example, by molding out of a synthetic resin the adapter main body, cylinder, and second ejection nozzle that are components of the adapter. The adapter may be mounted to the valve opening and closing device in place of the first container. When operating the lever, movement of the pusher is transmitted to the cylinder. When the cylinder is moved, the inclined portion at the other end of the cylinder operates to tilt the second ejection nozzle. The second fluid is supplied from the second container to the second ejection nozzle. On the other hand, when releasing the lever, the pusher returns to the position, and the cylinder returns to the pusher side interlockingy with returning of a tilting posture of the second ejection nozzle. While the cylinder reciprocates, an angle of the inclined portion is, preferably, in the range of 30 to 60 degrees. Thus, the cleaning implement of the present invention can eject the second fluid as appropriate by operating the lever.

In a tenth aspect of the present invention, a cleaning implement according to the ninth aspect of the present invention has a cylinder that includes a pair of side walls arranged on both sides of the inclined portion with a space, the second valve having a part arranged in the space.

A distal end of the second valve is coupled by being restrained by the pair of side walls.

In an eleventh aspect of the present invention, a cleaning implement according to the eighth aspect of the present invention has an adaptor that includes a cylindrical adaptor main body, a cylinder held inside the adaptor main body to be movable axially and the second ejection nozzle coupled to the cylinder, the adaptor main body having one end having a first connection port detachably held to the connection mechanism and the other end having a second connection port for detachably holding the second container, in which the second ejection nozzle includes an L-shaped portion and a collar formed with the L-shaped portion and extending in the direction orthogonal to the axis of the second valve, the cylinder having one end abutting on a distal end of the pusher toward the first connection port and the other end having a protrusion that can push the collar in a position distant from the second valve, the L-shaped portion having a first end coupled to the second valve and a second end formed with a spout for ejecting the second fluid to the outside of the adaptor main body.

According to the eleventh aspect of the present invention, the adaptor includes a cylindrical adaptor main body. It also includes a cylinder held inside the adaptor main body to be movable axially. It further includes the second ejection nozzle coupled to the cylinder. The adaptor main body having one end having a first connection port detachably held to the connection mechanism and the other end having a second connection port for detachably holding the second container.

According to the eleventh aspect of the present invention, the second ejection nozzle includes an L-shaped portion and a collar formed with the L-shaped portion and extending in the direction orthogonal to the axis of the second valve. The cylinder has one end abutting on a distal end of the pusher toward the first connection port and the other end having a protrusion that can push the collar in a position distant from the second valve. The T-shaped portion has one end coupled to the second valve and the other end formed with a spout for ejecting the second fluid to the outside of the adaptor main body.

According to the eleventh aspect of the present invention having a structure different from that of the eighth aspect of the present invention, the second ejection nozzle is tilted based on this principle.

The cleaning implement according to the present invention is a cleaning implement including a cleaning head and a valve opening and closing device connected to the cleaning head and being able to hold a first container receiving a first fluid or a second container receiving a second container, in which the cleaning implement can spray a fluid forward or rearward of the cleaning head by operator's choice.

By way of example, the cleaning implement according to the present invention can eject the second fluid such as polish or wax from the second ejection nozzle to the floor, and the user can apply the second fluid on the floor toward the rear. Thus, the user will not step on the applied floor. Moreover, since the second fluid is ejected from the second ejection nozzle to a space between the user and the cleaning head, the possibility of spraying a solution on an interior furniture or electrical appliance becomes lower.

DETAILED DESCRIPTION OF THE INVENTION

Referring to the drawings, a best mode for carrying out the invention will be described hereinbelow.

FIG. 1is a perspective external view of a cleaning implement according to an embodiment of the present invention.FIG. 2is a perspective exploded view of the cleaning implement according to the embodiment.FIG. 3is a longitudinal sectional view of the cleaning implement according to the embodiment.FIG. 4is a perspective external view of a cleaning head of the cleaning implement according to the embodiment.FIG. 5is a fragmentary perspective external view of the cleaning head according to the embodiment.FIG. 6is a perspective exploded view of a holding portion of the cleaning implement according to the embodiment.FIG. 7is a fragmentary exploded sectional view of the holding portion according to the embodiment.FIG. 8is a fragmentary exploded sectional view of the holding portion according to the embodiment.FIG. 9is a fragmentary exploded sectional view of a valve opening and closing device of the cleaning implement according to the embodiment.FIG. 10is a fragmentary exploded sectional view of a valve opening and closing device according to the embodiment.FIG. 11is a structural view showing an internal structure of a cap of the cleaning implement according to the embodiment.FIGS. 12A to 12Care schematic views showing a structure of a cap main body of the cleaning implement according to the embodiment.FIGS. 13A to 13Care schematic views showing a valve housing of the cleaning implement according to the embodiment.

FIG. 14is a perspective external view, partly broken, showing a main part of the valve opening and closing device according to the embodiment.FIG. 15is a perspective external view showing an adaptor and a connection mechanism according to the embodiment.FIG. 16is a perspective external view showing part of a second circulation path according to the embodiment.FIG. 17is a perspective external view showing another part of the second circulation path according to the embodiment.FIG. 18is a perspective external view of a cylinder of the cleaning implement according to the embodiment.FIG. 19is a perspective external view showing a state in which a second container is mounted to the adaptor according to the embodiment.FIG. 20is a longitudinal sectional view showing a state in which the second container is mounted to the adaptor according to the embodiment.FIG. 21is a fragmentary exploded sectional view showing a state in which the second container is mounted to the adaptor according to the embodiment.FIG. 22is a fragmentary exploded view of a cleaning implement to another embodiment.FIG. 23is a fragmentary perspective exploded view of the embodiment.

FIG. 24is a perspective external view showing a using state of the cleaning implement according to another embodiment.FIG. 25is a perspective exploded view of a cleaning implement in still another embodiment.FIG. 26is a perspective exploded view of the cleaning implement in the embodiment.FIG. 27is a longitudinal sectional view of the cleaning implement in the embodiment.FIG. 28is a perspective view of a cylinder of the cleaning implement in the embodiment.FIG. 29is a perspective view of the cylinder of the cleaning implement in the embodiment.FIG. 30is an external view of a third container and a third ejection nozzle of the cleaning implement in the embodiment.FIG. 31is a longitudinal sectional view of the third container and the third ejection nozzle of the cleaning implement in the embodiment.FIG. 32is a perspective exploded view of the third ejection nozzle of the cleaning implement in the embodiment.FIG. 33is a longitudinal sectional view of the third ejection nozzle of the cleaning implement in still another embodiment.

FIG. 34is a longitudinal sectional view showing a service state of the cleaning implement in the embodiment.FIG. 35is a perspective external view showing a service state of the cleaning implement in the embodiment.FIG. 36is a longitudinal sectional view of the cleaning implement in a further embodiment.FIGS. 37A to 37Care perspective views of a fourth ejection nozzle of the cleaning implement in the further embodiment.FIGS. 38A to 38Care perspective views of the fourth ejection nozzle of the cleaning implement in the embodiment.FIG. 39is a longitudinal sectional view of the fourth ejection nozzle of the cleaning implement in the embodiment. Furthermore,FIG. 40is a longitudinal sectional view of a still further embodiment.

Referring toFIG. 1,2or3, a cleaning implement10includes a cleaning head2, a pipe8coupled to the top face of the cleaning head2through an universal joint21, and a holding portion7mounted to an upper end of the pipe8. A valve opening and closing device3is provided at a portion of the pipe8located between the cleaning head2and the holding portion7. A first container61as will be described later can be mounted to the valve opening and closing device3. The pipe8is formed by coupling a plurality of pipe members8a,8b,8c, and8d.

Referring toFIG. 4, the planar shape of the cleaning head2is rectangular, for example. A front face2aand a rear face2bare formed at one and the other long sides of the cleaning head2. A right end face2cand a left end face2dare formed at one and the other short sides of the cleaning head2.

The cleaning head2includes a hard holder24and a pad25secured to the underside of the holder24. The holder24is injection molded out of a synthetic resin material such as acrylonitrile-butadiene-styrene (ABS) resin, polyethylene (PE) resin, polypropylene (PP) resin, polyethylene terephtalate (PET) resin or the like. The pad25is formed out of a foamed resin such as ethylene-vinyl acetate (EVA) copolymer, urethane or the like or a soft and resilient material such as rubber or the like. The pad25may be formed out of soft PP or PE. The holder24and pad25are secured by bonding.

Referring toFIG. 5, the bottom of the pad25serves as a cleaning operation surface22. A cleaning sheet22ais arranged on the cleaning operation surface22. The cleaning operation surface22is essentially flat. However, in order to prevent the cleaning sheet22afrom sliding with respect to the cleaning operation surface22, a plurality of small protrusions may integrally be formed with the cleaning operation surface22.

Referring toFIG. 4, the universal joint21is coupled to the top face of the holder24between the right end face2cand the left end face2d. Sheet retaining mechanisms26are arranged on the top face of the holder24in the inner position of four corners. The cleaning sheet22ais mounted to the sheet retaining mechanisms26. A hole26ais formed in each sheet retaining mechanism26on the top face of the holder24. The hole26ais covered with a deformable sheet26cformed out of PE, PP, PET or the like. The cuts26bare formed on each sheet26c. Referring toFIG. 5, the cleaning sheet22ais retained to the holder24by squeezing parts of the cleaning sheet22ainto cuts26b.

Referring toFIG. 4, a liquid ejecting portion20is mounted on the holder24. The liquid ejecting portion20is arranged between the right end face2cand the left end face2dof the holder24and in front of the universal joint21. The liquid ejecting portion20includes a base27and the first ejection nozzle23arranged on the base27. The base27and first ejection nozzle23are injection molded out of a synthetic resin such as ABS, PP, PET or the like. The first ejection nozzle23is fixed on the base27by fixing means such as fitting, bonding or screwing. The base27and the first ejection nozzle23of the liquid ejecting portion20may be formed integrally.

Referring toFIG. 4, a recess24athat opens toward the front face2ais formed in the top face of the holder24between the right end face2cand the left end face2d. The universal joint21is engaged in the recess24a. The liquid ejecting portion20is arranged in the recess24a. At a position reasonably distant from the cleaning operation surface22toward the height direction, the liquid ejecting portion20can eject a first fluid as will be described later from a spout23of the first ejection nozzle23forward outward of the cleaning head2.

Referring toFIG. 6, the holding portion7is provided to the pipe8on the opposite side of the cleaning head2, and is formed by assembling two holding casings7b. The holding portion7is coupled to the valve opening and closing device3, and includes a lever71for opening and closing a first valve93(refer toFIG. 10) of the first container61or a second valve62a(refer toFIG. 21) of a second container62as will be described later.

Referring toFIG. 6or7, the lever71is supported to the holding portion7to be rotatable about a pivot7cformed with the holding portion7. Referring toFIG. 8, in order to allow an user to pull the lever71by an angle γ, part of the lever71protrudes outward from the inside of the holding portion7by a biasing force of a torsion coil spring75arranged in the holding portion7.

A gear71ahaving the pivot7cas center of a pitch circle is partly formed with the lever71. A pulley74is assembled to be rotatable about a pivot7dformed with the holding portion7. A gear74ahaving the pivot7das center of rotation is assembled to the pulley7.4. When the lever71is pulled, the gear71ameshes with the gear74a. Normally, the gear71adoes not mesh with the gear74a. A spiral coil spring (not shown) is built in the pulley74. Referring toFIG. 6or7, the spiral coil spring operates to rotate the pulley74having one end of a belt73wound thereon in the direction of winding the belt73.

Referring toFIG. 7or8, when the user does not pull the lever71, the pulley74winds the belt73by a winding force of the spiral coil spring, always providing a predetermined tension to the belt73. When the user pulls the lever71, the gear71ameshes with the gear74aso that the pulley74can wind the belt73by a force produced by pulling the lever71and a tension of the spiral coil spring.

Referring toFIGS. 1 and 2, the pipe8is provided with the valve opening and closing device3between the cleaning head2and the holding portion7and on the side that the user is situated. Referring toFIG. 9or10, the valve opening and closing device3includes a connection mechanism31and a cam device33. The connection mechanism31renders the first container61detachable. The connection mechanism31is covered with a cover31cfor facilitating attachment and detachment of the first container61. The cam device33is composed of a rocker arm34forming a dynamic articulation that reciprocates angularly and a pusher35following the rocker arm34to reciprocate linearly. The pusher35is formed out of a synthetic resin and is mounted in a pump36.

The pump36has a shape having a U-shaped section with one end opened. An opening36aat one end of the pump36is hermetically connected to a frame31aof the connection mechanism31. A hole36bis formed at the other end (bottom) of the pump36. The hole36bis hermetically connected to one end of a hose4that defines a first circulation path. The other end of the hose4is hermetically connected to the first ejection nozzle23through the inside of the pipe8.

Referring toFIG. 9or10, the pusher35includes a distal end35athat abuts the first valve93and a collar35bthat closes the hole36bof the bottom of the pump36. A ring35cmounted to the bottom of the pump36makes sliding contact with a convex34bof the rocker arm34. The distal end35aand the collar35bare both positioned inside the pump36, whereas the ring35cis positioned outside the pump36. The collar35band the ring35chold the pump36therebetween. The collar35bcloses the hole36bby a resilient force of the pump36toward the hole36b. The distal end35aprotrudes toward the opening36a.

The rocker arm34reciprocates angularly with a pivot31bprovided to the frame31aas center of rotation. The other end73aof the belt73is caught at a moving end34aof the rocker arm34. Therefore, the belt73extending from the pulley74passes through the inside of the pipe members Bb to8dto be caught at the moving end34. The convex34b(refer toFIG. 9) is formed with the rocker arm34. The convex34protrudes from the middle of the rocker arm34toward the ring35cso as to be capable of making sliding contact with the ring35c.

Referring toFIG. 10, the first container61includes a tank61bfor receiving the first fluid and a cap90mounted to an opening of the tank61b. A valve hole91ais formed at a distal end of the cap90.

The internal structure of the cap90will be described. As shown inFIG. 11, the cap90includes a cap main body91, a first ring member92, a first valve93, a compression coil spring94, a second ring member95, a valve housing96, a seal member97, a tube member98, a valve protection member99, and a valve member100.

As shown inFIGS. 12A to 12C, the cap main body91includes a distal end91b, a mesh portion91c, and an air hole91d. The valve hole91ais arranged at one end of the distal end91b. The distal end91baccommodates the first ring member92, the first valve93, the compression coil spring94, the second ring member95, the valve housing96, and the seal member97. The mesh portion91cis formed with a mesh groove that meshes with the opening of the tank61b. The air hole91dis arranged in a substantially flat surface arranged on the top of the mesh portion91c.

The first ring member92includes a circular ring packing. The first ring member92seals the first fluid charged in the first container61. The first valve93includes a head93aand a leg93b. The head93aincludes a cylindrical head main body and a pair of flanges arranged on both sides of the head main body. The first ring member92is arranged between the flanges, i.e., on the peripheral face of the head main body. One end of the head93ais formed with an insertion hole into which one end of the pusher35is inserted. The other end of the head93ais formed with the leg93b. The leg93bincludes four blades. Each blade is formed with a convex for catching the compression coil spring94. One end of the compression coil spring94is caught in a catch groove96eas will be described later. On the other hand, the other end of the compression coil spring94is caught at the convex.

As shown inFIGS. 13A to 13C, the valve housing96includes a valve housing main body96h, a slide hole96athrough which the first valve93slides, a flange96b, and a long tube96cengaged with the tube member98. The slide hole96aincludes a first slide hole96a′ and a second slide hole96a″ that have different diameters. The catch groove96eis arranged between the first and second slide holes96′ and96″. An opening96fforming the first slide hole96a′ is engaged with the cap main body91. The second ring member95is arranged between the opening96fand the flange96b. The second ring member95includes a circular ring packing. The long tube96cis arranged at the side of the other opening96gforming the second slide hole96a″ and on the flange96b. The long tube96cincludes an air hole96d. Two convexes96iare arranged on the flange96bon the side having the long tube96c.

The seal member97includes a flange97aas shown inFIG. 11. The flange97ahas a diameter greater than that of the flange96bof the valve housing96. The seal member97includes in substantially the center a through hole97bthrough which the opening96gis arranged. The long tube96cand the convexes96iare arranged through the seal member97. The seal member97is formed out of a silicone resin.

The tube member98has a columnar shape. The section of the tube member98is shaped like a ring to allow air from the air hole91dto flow into the tank61b. One end of the tube member98is engaged with the long tube96c. The tube member98is formed out of polyurethane (PU) resin. The valve protection member99is shaped like a bell. A horn portion99ahaving an apex as engaged is arranged at an upper end of the valve protection member99. The horn portion99ais engaged with the other end of the tube member98. The top of the valve protection member99includes a pair of recesses99b. A convex (not shown) having a through hole engaging with the valve member100is arranged in the valve protection member99. The valve member100is arranged in the valve protection member99.

The valve member100includes a valve main body100aand a flange100b. The valve main body10ais shaped substantially cylindrically. The valve main body10ais formed out of a resilient member. A distal end100cof the valve main body10ahas a cut shape obtained by cutting the cylindrical shape from both side faces thereof. It is noted that the cut shape is such that two plate-shaped valves are arranged to be superimposed one upon another at the distal end, and are constructed to open or close in substantially the center of the distal end. With such a construction, the distal end100callows the valves to open in substantially the center so that air from the air hole91dis fed to the tank61bthrough the tube member98. A flange100bis arranged at the other end of the valve main body100a.

With the above structure, the first valve93is biased by the compression coil spring94from the inside of the cap90, thereby obtaining the closed state of the valve hole91a.

When the first container61is mounted to the connection mechanism31, the outer periphery of the cap90makes close contact with the pump36hermetically, whereas the first valve93of the first container61is pressed to the distal end35aagainst a biasing force of the compression coil spring94. At this time, the first valve93of the first container61is slightly moved toward the tank61b. However, no clearance allowing part of the first fluid received in the first container61to flow out toward a space defined by the pump36and the first valve93is formed between the first valve93and the valve hole91a.

As a result, part of the first fluid received in the first container61does not flow out toward a space defined by the pump36and the first valve93. Moreover, since the hole36bis closed by the pump36and the pusher35, the first fluid in the first container61is not moved into the hose4in this state.

On the other hand, when the user pulls the lever71, the belt73is moved to the holding portion7so that the rocker arm34is rotated by a pulling force of the belt73. Furthermore, since the pusher35is linearly moved to the holding portion7, the first valve93of the first container61is moved in the direction of the tank61b, and the collar35bis moved in the direction of separating from the hole36bof the pump36. Therefore, concurrently with a clearance being produced between the collar35band the hole36b, air taken in from the air hole91dis supplied into the tank61bthrough the tube member98and the valve member100. With this, the first fluid in the first container61is supplied to the first ejection nozzle23through this clearance and the hose4. The supplied first fluid is ejected forward of the cleaning head2from the first ejection nozzle23. That is, the first fluid passes through the first circulation path.

Referring toFIG. 14, the valve opening and closing device3allows mounting of the second container62through an adaptor32in place of the first container61. The adaptor32includes a cylindrical adaptor main body32a, a cylinder32baxially movably held in the adaptor main body32a, and a second ejection nozzle51coupled to the cylinder32b. The second ejection nozzle51serves as a second circulation path through which a second fluid flows.

Referring toFIG. 15, the adaptor main body32aincludes at one end a convex321of substantially the same shape as that of the cap90of the first container61. Referring toFIG. 14, a first connection port32chaving a size that allows non-contact entry and retraction of the distal end35aof the pusher35is formed in the center of the convex321. Referring toFIG. 20, the other end of the adaptor main body32ais formed with a second connection port32dthat holds detachably the second container62. An opening32g(refer toFIG. 19) is formed in the side face of the adaptor main body32aon the side of the second connection port32dso as to arrange a spout51cof the second ejection nozzle51outside the adaptor main body32a. Referring toFIG. 24, the spout51cis positioned, preferably, at a distance in the range of about 50 to 80 cm from the cleaning operation surface22(refer toFIG. 3), and more preferably, at a distance of about 70 cm from the cleaning operation surface22. Therefore, as shown inFIG. 24, in the state in which the cleaning implement10is used by being inclined at an angle of about 45 degrees, for example, a height H of the spout51cfrom a floor surface F can be in the range of 40 to 60 cm from the floor surface, and more preferably, about 50 cm.

Referring toFIG. 18, a collar323extending in the direction orthogonal to an axis of the cylinder32bis formed at one end of the cylinder32b. Referring toFIG. 21, the other end of the cylinder32bincludes an inclined portion32ethat intersects the axial direction at an acute angle toward the second connection port32d. An intersection angle of the axial direction and the inclined portion32eis, preferably, in the range of 30 to 60 degrees. The cylinder includes a pair of side walls32farranged on both sides of the inclined portion32ewith a space. Referring toFIG. 20, a collar324that can abut on a step325from inside is integrally formed with the center of the cylinder32b.

Referring toFIG. 16or17, the second ejection nozzle51includes a main-body portion511and a nozzle portion512. The second ejection nozzle51is formed in a T-shape by assembling the main-body portion511and the nozzle portion512. Referring toFIG. 16or21, one end51aof the main-body portion511makes contact with the inclined portion32e. The other end51bof the main-body portion511is connected to the second valve62a. A connection end51eof the main-body portion511is connected to the nozzle portion512. Referring toFIG. 17, the spout51cfor ejecting the second fluid is arranged at a T-shaped end of the T-shaped second ejection valve51in a position outside the adaptor main body32a. Part of the second valve62ais arranged in the space of the pair of side walls32f.

Referring toFIG. 14, the cylinder32band the second ejection nozzle51are accommodated in the adaptor main body32afrom the second connection port32d. Since one end of the adaptor main body32ahas substantially the same shape as that of the cap90of the first container61, one end of the adaptor main body32ais engaged with the pump36of the connection mechanism31so that the adaptor main body32ais held by the connection mechanism31. At this time, the spout51cprotrudes from the opening32g(refer toFIG. 19). The spout51cprotrudes from the opening32gso as to allow ejection backward or opposite of the first ejection nozzle23in the front and back direction of the cleaning head2.

The second container62is mounted to the adaptor main body32aon the side of the second connection port32d. The second container32is a spray can including a tilt-type valve that is tilted in the direction orthogonal to an axis of the second valve62aso as to eject the second fluid received in the second container62. Therefore, when the second ejection nozzle51is tilted, the second fluid is ejected from the spout51c. Moreover, since the spout51cis positioned at the height H from the floor surface F, the second fluid ejected from the spout51cmay be a fluid of lower viscosity such as water as well as a fluid of higher viscosity such as foam.

By way of example, the first container61may be of a type of a bottle that is moved in the direction parallel to an axis of the first valve93(refer toFIG. 10) so as to drop the first fluid naturally. By way of example, the first fluid includes water, a liquid detergent or a liquid wax. The second fluid includes a polish such as a synthetic wax that becomes solid at room temperatures after drying such as acryl resin wax or polyethylene wax or a natural wax such as Carnauba wax. Adoption of such a wax or polish facilitates coating or wiping on the floor surface.

When the user pulls the lever71, the lever71is pushed into the holding portion7against a biasing force of the torsion coil spring75, rotating the gear71a. With this, the gear74ais rotated together with the pulley74to wind the belt73. When the belt73is wound on the pulley74, the pusher35moves the cylinder32bto the second container62.

When the cylinder32bis moved to the second container62, the inclined portion32etilts the second ejection nozzle51in the direction of orthogonal to the moving direction of the cylinder32b. With this, referring toFIG. 24, the second fluid in the second container62can be ejected backward of the cleaning head2from the spout51cof the second ejection nozzle51.

When the user stops pulling the lever71, the lever71rotates the pulley74in the direction of loosing the belt73by a biasing force of the torsion coil spring75. With this, the pusher35is moved in the direction away from the cylinder32b, providing no force of pushing the cylinder32b. Furthermore, a returning force of the second valve62aof the second container62acts on the inclined portion32eof the cylinder32b. Then, the cylinder32bis moved in the direction away from the second container62. Thus, the inclination of the second valve62awith respect to the second container62returns to the vertical state, stopping ejection of the second fluid from the second ejection nozzle51.

In another embodiment as shown inFIGS. 22 and 23, the second ejection nozzle51includes an L-shaped portion51hand a collar51fformed with the L-shaped portion51hand extending in the direction orthogonal to the axis of the second valve62a. The other end of the cylinder32bincludes a protrusion32hthat can push the collar51fin the position away from the second valve62a. The L-shaped portion51hhas one end coupled to the second valve62a, and the other end formed with the spout51cfor ejecting the second fluid to the outside position of the adaptor main body32a.

The surface with which the protrusion32hmakes contact is separated from a center P of rotation on which the second valve62atilts by a distance h in the axial direction. The protrusion32hmakes contact with the collar51fspaced with respect to the second valve62ain the direction away from the axial direction. As a result, reciprocation of the cylinder32bis converted into rotation with the center P of rotation as center so that the second valve62ais tilted by this rotation by an angle α.

In still another embodiment as shown inFIG. 25, the valve opening and closing device3allows mounting of a third container63through an adaptor120in place of the first container61. The third container63is a spray can including a tilt-type valve that is tilted in the direction orthogonal to an axis of a third valve63aso as to eject a third fluid received in the third container63. In this embodiment, the third container63contains the third fluid such as wax.

The adaptor120includes a cylindrical adaptor main body130, a cylinder140axially movably held in the adaptor main body130, and a third ejection nozzle150coupled to the cylinder140. The third ejection nozzle150serves as a third circulation path through which the third fluid flows.

Referring toFIG. 25,26or27, the adaptor main body130includes a cylindrical main-body portion131, a convex132arranged at one end of the main-body portion131and having substantially the same shape as that of the cap90of the first container61, a third connection port133arranged at the other end of the main-body portion131and for holding detachably the third container63, and an opening134arranged in the vicinity of the third connection port133and for leading a third ejection nozzle150from the cylindrical inside to the outside of the adaptor main body130.

A fourth connection port135having a size that allows non-contact entry and retraction of the distal end35aof the pusher35is formed in the center of the convex132. The fourth connection port135is connected to a cylindrical inner surface136of the main-body portion131. The cylindrical inner surface136is connected to the opening134. A groove is formed in the cylindrical inner surface136that extends axially.

Referring toFIG. 27,28or29, the cylinder140includes a cylinder main body141obtained by combining plate-shaped members141ain the shape of a cross, a collar142formed at one end of the cylinder main body141, a collar144formed through a support143formed with the collar142and having a smaller diameter than the collar142, a collar146formed through a support145formed with the collar144, a collar147formed at the other end of the cylinder main body141, and a pair of pressing portions148aand148b.

The pair of pressing portions148aand148beach have a substantially triangular shape with an apex positioned offset with respect to the center, and are formed with the collar147with a clearance therebetween that allows arrangement of the third ejection nozzle150(refer toFIG. 26). The collar144has a shape that allows contact with the step137of the adaptor main body130from inside. The collar142has a shape that allows sliding on the cylindrical inner surface136of the adaptor main body130.

Referring toFIG. 30,31or32, the third ejection nozzle150includes a main body151, an arm152, and a nozzle portion153. The main body151is formed in a T-shape obtained by two pipe-shaped portions151aand151bintersecting each other substantially orthogonally. Collars154aand154bextend from one end of the pipe-shaped portion151b. A groove151dextending axially is formed in the inner peripheral surface of the pipe-shaped portion151a.

A fit hole151fthat can fit with the third valve63aof the third container63is formed at an end of pipe-shaped portion151b. The fit hole151fis connected to a through hole151ethat passes through the main body151. One opening of the through hole151eis formed with a fit portion151cthat can fit with a fit portion152hof the arm152. The arm152is formed in a roughly L-shape obtained by two pipe-shaped portions152aand152bintersecting each other, and has a through hole152g. A convex152e(refer toFIG. 30) is formed on the outer peripheral surface of the pipe-shaped portion152a. An end of the pipe-shaped portion152aincludes fit portion152hthat fits with the pipe-shaped portion151aso that the convex152efits in the groove151d. With this, the pipe-shaped portion152aand the pipe-shaped portion151aensure a relative positional relationship, and allow hermetic connection between the through hole151eand the through hole152g.

A ring-shaped convex152fis formed on the circumference of an end of the pipe-shaped portion152b. A concave152dis formed in the pipe-shaped portion152aon the side of the pipe-shaped portion152b.

Referring toFIG. 33, the nozzle portion153includes a nozzle main body153ahaving a hollow pipe-shaped through hole153eand a spout153dformed at one end thereof and connected to the through hole153e. The other end of the nozzle main body153ais open to form a fit opening153b. A convex153cthat can fit in the concave152dis formed on part of the circumference of the fit opening153b. A groove153cthat can fit with the convex152fis formed in the center of the fit opening153b. With this, the nozzle portion153ensures a relative positional relationship with respect to the arm152, and allows hermetic connection between the through holes152gand153eof the arm152.

Referring toFIG. 31, the third ejection nozzle150provides hermetic connection from the third valve63aof the third container63to the spout153d, forming a third circulation path. Therefore, liquid, such as wax, which is ejected from the third valve63a, can be ejected from the spout153d.

Referring toFIG. 25or26, the cylinder140is accommodated into the adaptor main body130from the third connection port133. The cylinder140is maintained in the state in which the collars142and the collar147are slidable axially on the cylindrical inner surface136. The cylinder140includes plate-shaped member141aextending axially, and is slidably arranged in a groove (not shown) formed in the cylindrical inner surface136. With this, the cylinder140is placed on the cylindrical inner surface136in the state of being movable axially, but not rotatable with the axial direction as center of rotation. The collar146of the cylinder140is positioned in the vicinity of the connection port135(refer toFIG. 27).

The fit hole151fof the third ejection nozzle150assembled by the main body151, arm152, and nozzle portion153is hermetically fitted with the third valve63aof the third container63(refer toFIG. 31).

Referring toFIG. 31, the third container63is fitted and held in the third connection port133of the adaptor main body130. At this time, the spout153dof the third ejection nozzle150protrudes from the opening134. The third ejection nozzle150protrudes from the opening134so as to allow ejection backward or opposite of the first ejection nozzle23in the front and back direction of the cleaning head2.

Since one end of the adaptor main body130has substantially the same shape as that of the cap90of the first container61, it can be fitted in the pump36of the connection mechanism31so that the adaptor main body130is held by the connection mechanism31.

Referring toFIG. 34, the apexes of the pair of pressing parts148aand148bof the cylinder140are arranged in the position where they can push the collars154aand154b(refer toFIG. 25or26).

When the user pulls the lever71, the lever71is pushed into the holding portion7against a biasing force of the torsion coil spring75, rotating the gear71a. With this, the gear74ais rotated together with the pulley74to wind the belt73. When the belt73is wound on the pulley74, the pusher35pushes the convex146aformed in the collar146of the cylinder140, moving the cylinder140to the third container63.

Referring toFIG. 34, when the cylinder149moves to the third container63, each of the pair of pressing parts148aand149bpresses the collar154aand154brespectively. Then, the pair of pressing parts inclines the third valve63a. With this, the third liquid which is in the third container63can be ejected from the spout153dof the third ejection nozzle150backward of the cleaning head2.

Therefore, referring toFIG. 33, when the third ejection nozzle51is tilted, the third fluid is ejected from the spout153d. Moreover, since the spout153dis positioned at the height H from the floor surface F, the third fluid ejected from the spout153dmay be a fluid of lower viscosity such as water as well as a fluid of higher viscosity such as foam. Specifically, the spout153dis positioned, preferably, at a distance in the range of about 50 to 80 cm from the cleaning operation surface22(refer toFIG. 35), and more preferably, at a distance of about 70 cm from the cleaning operation surface22. Therefore, in the state in which the cleaning implement10is used by being inclined at an angle of about 45 degrees, for example, the height H of the spout153dfrom the floor surface F can be in the range of 40 to 60 cm from the floor surface F, and more preferably, about 50 cm.

Referring toFIG. 35, when adopting the pipe8of 1145 mm length, an angle of 60 degrees between the pipe8and the floor surface F, and the third container63with a tilt-type valve, trial calculation is made about the minimum ejection area and maximum ejection area of a wax ejected from the spout153dof the third ejection nozzle150. The results of trial calculation are given by points P3and P4. In this case, the minimum designates a state in which the third valve63aof the aerosol can (third container63) with a tilt-type valve just begins to open when a force of pulling the lever is 20N, whereas the maximum designates a state in which the third valve63aopens maximally when a force of pulling the lever71is 24N.

In the drawing, points P1and P2correspond to the case in which an angle between the floor F and the pipe8is 45 degrees. The point P1designates a content landing point when pulling the lever71slightly so that the third valve63ajust begins to open, whereas the point P2designates a content landing point when pulling the lever71maximally so that the third valve63aopens to the maximum extent.

When the user stops pulling the lever71, the lever71rotates the pulley74in the direction of loosening the belt73by a biasing force of the torsion coil spring75. With this, the pusher35is moved in the direction away from the cylinder140, providing no force of pushing the cylinder140. Furthermore, a returning force of the third valve63aof the third container63acts on the pair of pressing portions148aand148bof the cylinder140. Then, the cylinder140is moved in the direction away from the third container63. Thus, the inclination of the third valve63awith respect to the third container63returns to the vertical state, stopping ejection of the third fluid from the third ejection nozzle51.

In still another embodiment as shown inFIG. 36, a fourth ejection nozzle160is provided to the third container63in place of the third ejection nozzle150. The fourth ejection nozzle160has a shape roughly like a hammer, and is composed of a support162and a nozzle portion163in place of the arm152and nozzle portion153of the third ejection nozzle150.

Referring toFIGS. 37A to 37C, the support162is formed by making a cylindrical portion162awith a through hole162band a head portion162fintersect each other. A convex162eextending axially is formed on the outer periphery of the cylindrical portion162a. The convex162eengages in a groove151d, and one end162hof the cylindrical portion162afits in the fit portion151c. A wedge-shaped inner surface162jis formed on the head portion162f, and has a bottom formed with an opening162k. A thorough hole162bis connected to the inner surface162j.

Referring toFIGS. 38A to 38C, a nozzle portion163of a wedge shape includes a wedge portion163aand a plate portion163b. A groove163cis formed in one surface of the wedge portion163a, which is linked with an end face of the wedge portion163a. A concave163dis formed in the other surface of the wedge portion163a.

Referring toFIG. 39, the fourth ejection nozzle160is formed by press fitting the wedge portion163aof the nozzle portion163into the inner surface162jof the head portion162f. With this, the groove163cand the inner surface162jof the head portion162fcooperate to define part of a fourth circulation path that communicates with the through hole152g. Specifically, fluid flowing through the through hole162bstrikes the bottom of the groove163cand turns to the opening162kfor ejection therefrom.

Referring toFIG. 40, the adaptor121uses a fourth container64provided with a press-down-type valve in place of the third container63provided with a tilt-type valve. A cylinder140′ includes a convex149in the center of the collar147. When the cylinder140′ is moved axially (direction of an arrow), the convex149pushes the third ejection nozzle150, so that the content of the fourth container64is ejected from the spout153dof the third ejection nozzle150. Therefore, the cleaning implement10using the fourth container64provided with a press-down-type valve can carry out ejection in a given range even if pulling conditions of the lever71change during cleaning, since an angle of the third ejection nozzle does not change.

While preferred embodiments of the present invention have been described and illustrated above, it is to be understood that they are exemplary of the invention and are not to be considered to be limiting. Additions, omissions, substitutions, and other modifications can be made thereto without departing from the spirit or scope of the present invention. Accordingly, the invention is not to be considered to be limited by the foregoing description and is only limited by the scope of the appended claims.