The present invention pertains to a mop and, in particular, a mop having a clamping assembly.
Mops having handles or levers for retracting the mop head in order to wring liquid from an absorbent mechanism, such as a sponge, attached to the mop head are well known. Such mops may include a sponge which is permanently attached to an end of the mop head, but is movable between a pair of rollers in order to compress the sponge and squeeze the liquid from the sponge. Such mops require that when the sponge is no longer able to clean properly, the entire mop including the mop head, mechanism and handle would have to be discarded. Other mops provided for disengagable sponges, for example by sliding the sponge assembly off of a bar at the end of the mop head. The removal of the sponges from such mops is difficult and requires the dirtying of the user's hands because the sponge must be grasped tightly in order to remove it from the mop head.
Therefore, there is a need for a sponge and mop head assembly which allows for the sponge to be quickly and easily removed without handling of the sponge and without requiring a great deal of physical strength.
This application discloses an embodiment which comprises a mop including an elongated handle having a bore and a mop head. A rod extends through the bore and a lever is attached to a first end of the rod and the lever pivotally attaches to the handle and is movable among a neutral position, a wringing position and a release position. A clamping assembly is attached at a second end of the rod and the clamping assembly clampingly engages a sponge and includes a hinge having a release arm. A roller is mounted to the mop head and a release member is attached to the handle so that upon activation of the release member, the lever may be moved to the release position, forcing the release arm to engage the roller in order to release the sponge from the clamping assembly. In an embodiment, the hinge may be formed by a first leaf and a second leaf and each leaf includes a proximal end having a cylindrical eye and the release arm and a distal end which includes a flange and a pin interposed between each of the cylindrical eyes of each hinge leaf. In an embodiment, the hinge may include a coil spring mounted on the pin in order to urge the clamping assembly to a closed position. In an embodiment, a pair of legs may abut each release arm from the coil spring. In an embodiment, each flange may grip a corresponding finger protruding from a top of the sponge in order to attach the sponge to the clamping assembly.
In an embodiment, a rib may run along a side of the sponge and an “L” shaped finger protrudes from the rib. In an embodiment, the rod may include an attachment head at the second end of the rod for attachment to the clamping assembly. In an embodiment, the attachment head includes a pair of cylindrically shaped couplers for receipt of the pin to attach the head to the hinge. In an embodiment, the pair of cylindrical couplers may straddle a coil spring and the couplers are centered on the pin with the cylindrical eyes of each hinge leaf located toward each end of the pin. In an embodiment, each release arm may protrude from each hinge leaf on opposing sides of the clamping assembly.
In an embodiment, each release arm may include a metal tab that extends at an angle from between 10 to 45 degrees from an axis formed transversely through the center of the clamping assembly, collinear with a longitudinal axis of the rod when the clamping assembly is in the closed position. In an embodiment, the clamping assembly may move from the closed position to an open position when the clamping assembly is moved to a position adjacent the roller so that the release arm abuts the roller in order to pivot the hinge leaves to spread the flanges apart upon movement of the lever from the neutral position to the release position. In an embodiment, upon opening of the clamping assembly, each flange of the hinge leaf may pivot away from an “L” shaped finger protruding from the sponge in order to disengage the sponge from the clamping assembly.
In an embodiment, the release member may include a spring-mounted button having a hole for receiving the rod and in a non-depressed position the button may prevent the rod from sliding therethrough. In an embodiment, the rod may include a retaining sleeve that abuts against the button in order to prevent the rod from passing therethrough. In an embodiment, the hole may be formed in a body of the button and the hole has a diameter slightly larger than the diameter of the retaining sleeve and upon depression of the button, the hole is axially aligned with the retaining sleeve so that the retaining sleeve may pass therethrough when the lever is moved towards the release position. In an embodiment, the hole includes a lead-in chamfer on a side of the body so that after release of the sponge from the clamping assembly and movement of the lever from the release position to the neutral position, the retaining sleeve engages the lead-in chamfer in order to force the button to slide back to its axially aligned position so that the retaining sleeve may slide back through the hole and back to a position where the lever is in the neutral position.
In an embodiment, the mop head may comprise a housing having a cavity for encasing the clamping assembly and for receiving the sponge therein in a retracted position. In an embodiment, the mop head may also include therein the release member mounted thereto. In an embodiment, a pair of rollers may be attached at the distal end of the mop head adjacent the cavity opening. In an embodiment, the housing may include side openings from which the sponge may protrude.
In an embodiment, the housing may include a plurality of roller retainer members at its distal end. In an embodiment, the mop head housing may include a plurality of ribs formed on an interior of the housing in order to guide the clamping assembly when it is slid in and out of the cavity. In an embodiment, the housing may include a plurality of stop abutments formed on the interior of the housing in order to stop the clamping assembly from movement within the cavity and defining the wringing position of the lever. In an embodiment, the sponge may be formed of a first half having a soft absorbent material and a second half of a semi-absorbent, durable material.
In a further embodiment, a method is provided of disengaging a sponge from a mop comprising the steps of rotating a lever attached to a rod having a clamping assembly engaging a sponge, depressing a release member so that the rod may pass therethrough, pushing the rod through a handle of the mop so that the clamping assembly engages a pair of rollers causing the clamping assembly to open and releasing the sponge from between a pair of flanges at the end of the clamping assembly in order to disengage the sponge.
For the purpose of facilitating an understanding of the subject matter sought to be protected, there are illustrated in the accompanying drawings, embodiments thereof, from an inspection of which, when considered in connection with the following description, the subject matter sought to be protected, its construction and operation, and many of its advantages should be readily understood and appreciated.
a is an enlarged, fragmentary view in partial sections of a portion of the mop head of
The invention may be understood with respect to an embodiment disclosed by
Turning to
The distal end 61 of the housing 60 includes rollers 51, 52 attached thereto by attachment members 105, 106. The housing 60 forms a cavity 110 for receiving the clamping assembly 70 and sponge 50 therein. Also mounted within the housing 60 is rod 35 along the longitudinal axis L. The first end 16 of the rod 35 protrudes through the neck 103 to which the handle 15 is attached. The rod 35 protrudes up through the handle 15 and attaches to the lever 40. The second end 114 of the rod 35 includes an attachment head 115. The attachment head 115 includes a pair of cylindrical couplers 118, 119 in order to attach the rod 35 to the clamping assembly 70.
The clamping assembly 70 consists of a hinge formed of a first leaf 121 and a second leaf 122. Each leaf 121, 122 includes a proximal end 124a, 124b having a pair of cylindrical eyes 125, 126, 127, 128. Also on the proximal end 124a, 124b is a release arm 131, 132. Each distal end 130a, 130b includes a flange 76, 77. In an embodiment, the hinge is made of metal and each release arm 131, 132 is a metal tab angled from between 10 to 45 degrees from an axis formed transversely through the center of the clamping assembly collinear with a longitudinal axis of the rod when the clamping assembly is in a closed position. A coil spring 134 is situated in the gap between the cylindrical couplers 118, 119 of the attachment head 115. The coil spring 134 includes a pair of legs 135, 136 that urge the hinge to a closed position. The attachment head 115 is assembled to the clamping assembly 70 by inserting pin 137 through the cylindrical eye 128 of the second leaf 122, then through the cylindrical eye 126 of first leaf 121, then through the coupler 118, then through coil spring 134, then through the coupler 119, then through the cylindrical eye 127 and finally through the cylindrical eye 125 of first leaf 121. The pivotal hinge is formed which provides for a clamping assembly 70 in order to clamp onto L-shaped fingers 141, 142, 143 protruding from a rib 145 formed at a top 146 of the sponge 50. The clamping assembly 70 operation will be explained in more detail below and includes an annular recess 148 for engaging an annular protrusion 155 protruding from within the hole 100 of the release button 90.
A retaining sleeve 95 is assembled onto the rod 35 and includes an annular recess 148 for engaging an annular protrusion 155 protruding from within the hole 100 of the release button 90. As shown in
In the neutral position the clamping assembly 70 is located within the cavity 110 near the distal end 61 of the housing 60. The first half 94 includes a plurality of ribs 150 that protrude into the cavity 110 but include shaped or tapered edges in order to guide the clamping assembly as it is moved through the cavity 110. The ribs 150 also form stop abutments 151 in order to limit the upward movement of the clamping assembly 70 and the rod 35. The stop abutment 151 abuts the clamping assembly 70 as the sponge is moved to its wringing position (
Turning to
When the lever 40 is pivoted away from the grip 30 at the end of the handle 15 from the wringing position to the neutral position, the sponge 50 expands as shown in
The sponge 50 may be released from the mop head 20 as shown in
In an embodiment, the release button 90 may include a safety release so that when the lever 40 is depressed with a large force and the retaining sleeve 95 is forced against the body 92 without depressing the release button 90 the retaining sleeve 95 abuts against a chamfered notch on the body 92 of the button 90 in order to engage the button body 92 and cause the button 90 to move to its depressed position with the hole 100 aligned with the longitudinal axis L so that the retaining sleeve 95 may slide through.
After the clamping assembly 70 is opened and the old sponge 50 is removed, the clamping assembly 70 is maintained in its open position by locking the clamping assembly between the rollers 51, 52 via the retaining sleeve 94 annular recess 148 abutting the annular protrusion 155 within the hole 100 of the release button 90 (
The matter set forth in the foregoing description and accompanying drawings is offered by way of illustration only and not as a limitation. While particular embodiments have been shown and described, it will be obvious to those skilled in the art that changes and modifications may be made without departing from the broader aspects of applicants' contribution. The actual scope of the protection sought is intended to be defined in the following claims when viewed in their proper perspective based on the prior art.
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Number | Date | Country |
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1000046 | Feb 1952 | FR |