1. Field of the Invention
The present invention relates to a moisture pad for wetting one's fingers for a better grip or for moistening the adhesive of an envelope flap or the like.
2. Description of the Prior Art
People find that moistening their fingers affords them a better grip when handling sheets of material such as paper or plastic, allowing them to more easily separate sheets of such materials. For example, when turning the pages of a book or counting paper money, people are commonly observed moistening their fingers with their saliva to allow them to more easily separate the sheets of paper. The same technique is also applied when opening plastic bags at the grocery store. However, such practices are unhygienic, and many people that may have to handle an item, after it is handled by a person who moistened their fingers with their saliva, find such practices objectionable.
Moist sponges placed in open containers are often placed on post office counters for patrons to use for moistening the flaps of the envelopes to activate the pre-applied adhesive. Also, tubes of fluid adhesives with sponge applicators at the tips are known for the purpose of activating the pre-applied adhesive of the flaps of the envelopes. However, these fluid adhesives leave a tacky residue that makes them unsuitable for moistening fingers, and the open containers with wet sponges cannot be conveniently carried on a person as they go about their daily activities. The need persists for a device that allows a person to moisten their fingers in a more hygienic manner and that can be conveniently carried on a person as they go about their daily activities.
The present invention is directed to a moisture pad that is easily portable. The moisture pad includes a porous pad, for example a sponge; a water bladder or reservoir; and a container for securely supporting the porous pad and the reservoir. Optionally, a lid may be provided as a closure for the container to reduce evaporation of the water. As another option, a strap can be provided for the container to allow the moisture pad to be worn on a person's body. The strap can, for example, be a wrist strap or an upper arm strap. The reservoir is preferably provided with a closable filing opening. The porous pad may be placed over the top of the reservoir or to one side of the reservoir. The reservoir is provided with a check valve that allows water to be dispensed to the porous pad when the reservoir is squeezed. The check valve is normally closed to prevent water loss from the reservoir. The user can squeeze the reservoir by pressing on it to pressurize the contents and thus open the check valve to allow water to be applied to the porous pad as necessary to wet the pad when desired.
The check valve, also known as a one-way valve, can be of any suitable type such as, for example, a caged ball check valve; a spring biased, caged ball check valve; or a flexible flap check valve of molded rubber that is self-biased or internally biased to assume the closed configuration, which is also referred to as a slit valve herein. A tube may be provided to convey water from the check valve to at least the proximity of the porous pad within the container. The outlet of the tube may even be in contact with or extend into the porous pad.
Similar reference characters denote corresponding features consistently throughout the attached drawings.
Referring to
Optionally, a lid 208 may be provided as a closure for the container 206 to reduce evaporation of the water. The lid 208 may be hinged or tethered to the container 206. A gasket 222 attached around the periphery of the lid 208, or provided on the surface of the container 206 that engages the periphery of the lid 208, is preferably provided between the lid 208 and the container 206 to seal gaps between the lid 208 and the container 206 in order to reduce evaporation. In the illustrated embodiment, the gasket 222 is attached around the periphery of the back plate 216 of the lid 208. The lid 208 is preferably provided with fastening means to secure the lid 208 to the container 206 in the closed position. The fastening means for releasably securing the lid 208 in the closed position relative to the container 206 can be of any suitable type. In the illustrated embodiment, the fastening means includes one or more raised ribs 234 that are part of the lid 208 and that snap over one or more corresponding raised ribs 236 of the container 206 to releasably secure the lid 208 in the closed position relative to the container 206. When the lid 208 is open, the porous pad 202 can be accessed by the user so that the user can press the porous pad 202 with one or more of his or her fingers in order to wet or moisten his or her fingers. With the lid 208 in the open position, the reservoir 204 can also be accessed by the user so that the user can squeeze or press the reservoir 204 with one or more of his or her fingers in order to transfer water from the reservoir 204 to the porous pad 202 in order to wet or moisten the porous pad 202 when needed.
In the embodiment illustrated in
As another option, a strap 210 can be provided for the container 206 to allow the moisture pad 200 to be worn on a person's body. The strap 210 can, for example, be used to attach the moisture pad 200 to a person's wrist or upper arm. The strap 210 uses hook and loop fastener portions 224 and 226 that allows one portion of the strap 210 to be fastened on to itself after it has been routed through the ring or loop 228. Alternatively, the strap 210 may employ a buckle that cooperates with perforations in at least a portion of the strap to fasten the strap around the wearer's wrist in the same manner as a watch band. The strap 210 may be of one-piece or two-piece construction.
The reservoir 204 is preferably provided with a closable filing opening 218 that is provided with a cap 220. The cap 220 may be hinged or tethered to the container 206 or the reservoir 204. A gasket 238 is preferably provided between the cap 220 and the container 206 or the reservoir 204 to prevent water leakage from the filing opening 218 when the cap 220 is in the closed position. The cap 220 is preferably provided with fastening means to secure the cap 220 in the closed position. The fastening means for releasably securing the cap 220 in the closed position can be of any suitable type provided that it is capable of holding the cap in the closed position with a large enough reaction force such that the cap 220 will not pop off when the reservoir 204 is being pressurized, for example by being squeezed, to transfer water to the porous pad 202. In the illustrated embodiment, the fastening means is a raised rib 240 that is part of the cap 220 and that snaps over a corresponding raised rib 242 on the container 206 to releasably secure the cap 220 in the closed position as shown in
In the illustrated embodiment 200′ of
The porous pad 202, 202′ may be placed over the top of the reservoir 204, 204′, as shown in
The check valves 212 can be of any suitable type such as, for example, a spring biased caged-ball check valve or a flexible flap check valve 212, 212′, as illustrated, that is of molded rubber and is self-biased or internally biased to assume the closed configuration. The latter type of valve, illustrated in
A syringe (not shown) or an eye dropper (not shown), either one with an optional thin, elongated plastic tube at the discharge end, may be used to fill the reservoir 204, 204′ with water. Also, the reservoir may be located outside the container 206, 206′. For example, the reservoir may be located on the strap 210. Also, because the lid 208 limits evaporation, the porous pad 202, 202′ may remain sufficiently wet for hours without the need for being rewetted or saturated by water from the reservoir 204, 204′. Accordingly, when a supply of water is readily accessible, the reservoir 204, 204′ may be eliminated from the moisture pad 200, 200′, allowing for a more compact and inexpensive device.
Referring to
The valve 212 of the illustrated embodiments has a flange 252 at its inlet end to help secure the valve at the inlet end of the tube 214. The valve 212′ is identical to the valve 212 except that it lacks the flange 252. The valves 212, 212′ can be fixed in place by adhesive, cement or the application of heat and pressure. Also, the valves 212, 212′ may be of one-piece construction with the bladder 204, 204′ or with the tube 214, 214′. The valves 212, 212′ may be located at or near the inlet end of the tubes 214, 214′ as illustrated in
Although, as illustrated, the tubes 214, 214′ and valves 212, 212′ have circular cross sections, it is possible for the tubes 214, 214′ and valves 212, 212′ to have elongated cross sections that, for example, extend for approximately the inside width of the reservoir 204, 204′. As another alternative design, the tubes 214, 214′ may be eliminated altogether and the valves 212, 212′ attached directly to the reservoir 204, 204′. The partition wall 244 would then be eliminated, and the valves 212, 212′ would then allow water to enter the interior of the housing, responsive to user input, where it can be absorbed by the porous pad 202, 202′.
Referring to
The vent 254 is not necessary for the successful operation of the moisture pad 200. If the vent 254 is not provided for the reservoir 204, the reservoir 204 will collapse further and remain collapsed with each emission of water from the reservoir 204; thus, providing a visual indication of the amount of water remaining in the reservoir and of the need for refilling the reservoir. Preferably, the reservoir 204, 204′ is made of a transparent polymeric or elastomeric material to allow a user to determine the amount of water remaining in the reservoir, or whether or not the reservoir needs refilling, by visual inspection.
As yet another alternative design, the reservoir 204 can be made rigid. The moisture pad would then be provided with a push button or pressure pad that would be accessible from the exterior of the housing 206 that would operate or actuate a pump mechanism, such as the kind that is used in conventional spray bottles for example, provided inside the housing 206. Spray nozzles or a tube such as tube 214, supported by the partition 244, would then provide water to the porous pad 202 when the pump mechanism is actuated using the push button. A rigid reservoir would particularly benefit from a vent such as, for example, the vent 254.
Referring to
In
Similarly, if the vent 254 is attached in a fixed position to the container 206, the vent could be connected to the reservoir via an extendable conduit to reduce the stress on the attachment of the vent with the container when the reservoir is depressed. This concept is illustrated in
As an alternative, shown in
Referring to
The container 306 has two side by side compartments, one for the porous pad 302 and one for the reservoir 304. The two compartments of the container 306 are separated by a wall 344. The container 306 has two top openings 358 and 360. The opening 358 allows a user to press or squeeze the porous pad 302. The opening 360 provides enough clearance to allow the outward projecting portion of the push button 366 to extend through the opening 360. The push button 366 has a flange 370 that is too large to fit through the opening 360 and thus limits the outward projection of the push button 366. When the button 366 is pushed inward it squeezes the reservoir 304 and supplies water to the porous pad 302. The opening 358 is preferably provided with a closure 372 that snaps into the closed position over the opening 358. The closure 372 is snap fitted to the opening 358 for securing the closure 372 in the closed position over the opening 358.
As shown in
Similarly, if the vent 354 is attached to the container 306 at a fixed position relative to the container 306, the vent 354 could be connected to the reservoir 304 via an extendable conduit to reduce the stress on the attachment of the vent with the container when the reservoir is depressed. As shown in
Referring to
The container 406 has two side by side compartments 476 and 478. The compartment 476 houses the porous pad 402, and the compartment 478 houses the reservoir 404. The two compartments of the container 406 are separated by a wall 444. The container 406 has two top openings 458 and 460. The opening 458 allows a user to press or squeeze the porous pad 402. The opening 460 provides enough clearance to allow the outward projecting portion of the push button 466 to extend through the opening 460. The push button 466 is connected to a plate or piston 470 by a shaft 480. The piston 470 is located inside the pump housing 482. The top of the pump housing 482 has an opening or hole 484 that provides enough clearance for the shaft 480 to slide through the opening 484, but the piston 470 is too large to fit through the opening 484 and thus limits the outward projection of the push button 466. The spring 468 surrounds the shaft 480 and acts between the top of the pump housing 482 and the push button 466 to bias the button 466 toward the extended position.
The piston 470 is embedded in the pump bellows or diaphragm 486. The bellows 486 and the pump housing 482 cooperatively form a sealed, variable volume pumping chamber 488. When the button 466 is pushed inward, the piston 470 is pushed farther into the pump housing 482 toward the bottom of the pump housing, which collapses the bellows 486 and reduces the volume of the pumping chamber 488 to eject water from the pumping chamber 488 and in turn from the pump 474. When the button 466 is released, the spring 468 pushes the button 466 toward the extended position and moves the piston 470 away from the bottom of the pump housing, which expands the bellows 486 and increases the volume of the pumping chamber 488 to draw water into the pumping chamber 488 and in turn into the pump 474. The bellows 486 has a peripheral sleeve that is folded over on itself in outside-in fashion. As the piston 470 moves toward the bottom of the pump housing 482, more of the peripheral sleeve of the bellows is folded inward on itself allowing the bellows to collapse farther and reduce the volume of the pumping chamber 488. As the piston 470 moves toward the top of the pump housing 482, less of the peripheral sleeve of the bellows is folded inward on itself allowing the bellows to expand farther and increase the volume of the pumping chamber 488.
The pump 474 has an inlet 490 and an outlet 491. The pump inlet 490 is in fluid communication with the reservoir 404 via the inlet conduit 492. The pump outlet 491 is in fluid communication with the compartment 476, and in turn with the porous pad 402, via the outlet conduit 493. An inlet one-way valve 494 allows water to flow from the reservoir 404 to the pump 474 and prevents flow from the pump 474 to reservoir 404. An outlet one-way valve 495 allows water to flow from the pump 474 to the pad compartment 476 and prevents flow from the pad compartment 476 to the pump 474. The pressable member 466, a push button in the illustrated example, can be pressed by the user to operate the pump 474 in order to supply water from the reservoir 404 to the pad compartment 476 and thus wet the porous pad 402.
In the illustrated example, the one-way valves 494 and 495 are slit valves. Any suitable type of one-way valve, including captive ball valves and any of the other types of one-way valves referred to previously, may be used in the moisture pad device 400. A convergent-divergent nozzle, or any other type of suitable nozzle, may be provided at the point where water issues from the conduit 493 into the compartment 476, in other words at the outlet of the conduit 493, if desired. The moisture pad device 400 may also be provided with any of the types of closures 208 or 372 previously discussed.
When the button 466 is pushed inward it squeezes the pumping chamber 488 and supplies water to the porous pad 402.
Referring to
In all other respects, the embodiments of
It must be understood that all permutations of the features of the various disclosed embodiments are contemplated as being part of the present invention. It is to be understood that the present invention is not limited to the embodiments described above, but encompasses any and all embodiments within the scope of the following claims.
Number | Date | Country | |
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62384680 | Sep 2016 | US | |
62278388 | Jan 2016 | US |