Not applicable.
Not applicable.
1. Field of Art
The invention relates to a hand held sanitary washer or hand-held bidet.
2. Prior Art
The advantages of using running water for personal hygiene are well known, and the practice, more widespread in some parts of the world, is becoming more prevalent in the United States. This invention incorporates the addition of liquid soap and other modifications to facilitate e its use. The term “soap” appearing anywhere in this application refers to any substance that can be dispensed, including disinfectants, medications, lotions, etc.
The advantages of washing with soap, compared to washing with water only, are self-evident. The presence of soap dramatically increases the cleansing action of water by creating a film which bonds to the undesired organic matter, said film being easily rinsed afterwards. This results in a much more complete cleaning action, as well as leaving the user feeling fresh and pleasant smelling.
While the principle of a cleaner perineum should appeal to everybody, there are some conditions that make this device almost essential. Those suffering from hemorrhoids experience significant pain and bleeding from wiping with paper towels. Any person afflicted with perineal conditions such as an abscess, fistula, trauma, would similarly benefit from the use of this device. The device is also suitable for improving female genital hygiene.
Inventors have created several types of bidet-type washers. U.S. Pat. No. 4,890,340 to Lovitt describes one such device. In the is apparatus, the amount of water is limited to what can be filled inside the device since there is no source of constantly running pressurized water. The device also has no provision for supplying warm water. It has no way to deliver soapy water and no anti-splashing features. The same limitations also apply to another portable perineum cleaning device described by U.S. Pat. No. 6,955,662 B2 to Moser et al.
U.S. Pat. No. 4,195,369 to Lesick, describes a portable bidet attachment. It involves supplying water from a sink faucet to an apparatus that clamps on the back of the toilet rim. It is a bulky device that requires prior installation on the toilet rim with clamps. After installation, the ability to finely control the aim of the water during use is not possible. To change from cleaning the anal area to cleaning the female genitalia, the user would have to unclamp the whole apparatus from the posterior rim of the toilet bowl and reattach it to the front rim of the toilet bowl. The water tube that connects from a sink faucet would be a nuisance if left permanently in place, and therefore the design is not good for long-term use. The clamps described are bulky and would abut against the user's buttocks while sitting down. In addition, to clean around and underneath the clamps, the user would have to remove those clamps. The device has no aerator to reduce splashing, no removable head, and no filtration ability. A major drawback is the lack of ability to deliver soapy water.
U.S. Pat. No. 7,127,750 to Lim, also describes a hand-held bidet apparatus. Lim's apparatus is not portable and the sprayer head also does not have an aerator. Lim does not describe any means of making the device adapted to portable or outdoor use. A major drawback to Lim's invention is the lack of any soap delivery provision.
U.S. Pat. No. 6,973,679 to Schad describes a personal cleansing spray device with an integrated trigger mechanism. The design uses a gun-shaped sprayer and a squeezable trigger. It has an external soap reservoir, which is connected to the handle via an external soap supply tube. It can readily be seen that its gun-shaped spray handle will be very difficult to aim upwards, and simply cannot allow the fine movements necessary for a device of this nature to be effective. This difficulty in aiming the water spray can result in the unintentional splashing of the back of the toilet seat, the users back, and into the toilet bowl itself. This is clearly undesirable, as it poses the risk of splashing dirty toilet water back onto the user. This is completely avoided with the current design, since the water jet is naturally directed upwards, and the water falls passively in the toilet bowl. Schad's external soap supply tube also adds bulk to the connection from water source to handle, and this extra-bulk will make it unwieldy to maneuver the hose. Furthermore, Schad indicates the use of a soap release button on the side of the handle, without showing internally how it could work. There is no description of a clear embodiment with a plausible soap pumping mechanism. In addition, even if the soap supply button can work somehow, the user has to pump soap the whole length of the external soap supply tube before any soap gets out. There are also no design features for mixing soap with water, such as a mixing chamber. In addition, Schad does not describe any means of portability for outdoor use or use away from home, a removable head, or antisplashing mechanism such as an aerator. All these deficiencies are solved in the current design.
U.S. Pat. No. 5,991,937 to Safara describes a hand held bidet with soap. However, soap comes out without mixing with water. Therefore, the undiluted soap will reach certain spots and miss others, and unless the user pumps soap repetitively, may miss the most soiled spots altogether. Also, some undiluted soap can drip back in the toilet bowl and be wasted. Safara's design has no provision for refilling the soap bladder. It is also apparent that water could reflux into the soap bladder, thus causing progressive dilution of the soap over time and thus reducing its cleaning effect. The water and soap delivery systems and controls are problematic. Safara describes a three-position slide switch (off position, water only position, wash-soap position). This switch operates a spring-biased roller to squeeze a soap bladder. The switch can possibly deliver one dose of soap as it is pushed forward into the wash soap position, but is not able to deliver additional doses from that position, unless the roller is repeatedly moved forward and backwards. This single slide switch apparently does not control both water flow and soap delivery.
Safara also does not describe a detachable head, and therefore his device would be only a single user device. Any potential for commercial multi-user use such as in a hospital setting, would not be possible
U.S. Pat. No. 4,903,347 to Garcia et. al. describes a cleansing that is not a hand-held. It is a large, bulky, commode-like design, utilizing electrical pumps and has provisions for automatic toilet flushing. It is aimed essentially at the physically handicapped population and their caregivers. With its bulk and cost involved, it offers no benefit to the average consumer. Multi-individual use is also excluded. There are no provisions for eliminating splashing.
Several objects and advantages of the present invention are:
(a) to provide a cleansing apparatus with a constant, virtually unlimited source of pressurized, temperature controlled water.
(b) to provide cleansing apparatus that is capable of introducing soap and producing a soap and water mixture.
(c) to provide a cleansing apparatus that reduces unhygienic splashing of the water stream.
(d) to provide a cleansing apparatus with an efficient profile that allows unobstructed cleaning of the surrounding toilet facility or basin.
(e) to provide a cleansing apparatus that reduces the possibility of cross contamination allowing use by more than one person thereby increasing the value of the device in an institutional setting.
(f) to provide a cleansing apparatus with filtration capabilities.
(g) to provide a cleansing apparatus that allows the user to easily direct the water jet to the desired area of the perineum or other target, and doing so while holding the handle in a relaxed manner, and without applying any undue strain on the wrist, the user's hand is kept well away from the buttocks further enhancing infection control and cross contamination.
(h) to provide a cleansing apparatus with an internal soap reservoir that avoid the aspiration of water into the compartment thereby avoiding the dilution and loss of effectiveness of soap or disinfectant.
Although the design was inspired by a need to improve personal hygiene of the perineum and other body areas, and to extend this enhanced hygiene to a large number of people at a reasonable cost, the device lends itself to other intuitive uses. In the first aid setting, this device can be used to perform an initial cleansing of grossly contaminated wounds. Pet owners can use it to help in washing their pets with more ease, without having to stop to open a pet shampoo container, pour the shampoo onto a hand, and lather it into the animal's fur. With the animal being held with the non-dominant hand, the user can use the dominant hand to spray shampoo, then water, then more shampoo, without letting go of the animal. The device can be extended to use in the bathtub or shower, either for body washing or for cleaning the shower or tub walls. The device can also be used in kitchen sinks, produce departments or any other location where cleaning is done.
The preferred embodiment is illustrated in
The bottom surface of the handle shows an actuator 5 to release soap from the soap reservoir 3, which is aspirated by a small pump 19 via a soap uptake tube 20. The soap propelling mechanism is here represented by a 2-stroke, reciprocating piston pump 19, but other mechanisms can be used. The soap then moves across a one-way valve 23 into the pump cavity 19a. This one-way valve 23 prevents the backflow of soap into the soap reservoir 3 when the trigger 5 is activated. The soap is then pumped under pressure into a soap delivery tube 22 that reaches the head 2. However, the soap delivery tube 22 can be embodied to join the water channel more proximally. The soap then exits the head 2 under pressure, to be sprayed onto the perineum. A second one-way check valve 23a at the soap outlet prevents back flow of air or water into the soap delivery tube.
Two major embodiment classes were described above, but different variations can be envisioned. The main concepts of the design can be adapted in different ways, to accommodate different user preferences or manufacturing efficiency, without deviating from the substance of the design. These different embodiments are listed as a matter of illustration and are not meant to be limiting the applicability of this versatile design.
Any permutation of the position of the actuators relative to each other and relative to the body of the device may be offered. For example, the position of the two actuators can be reversed, with the soap actuator 5 on the top of the handle and the water actuator 4 on the bottom (
The cylindrical handle can be replaced with any other suitable design of a different dimension, i.e., different length, width, volume or cross-sectional shape (square, rectangle, hexagonal, octagonal, etc).
The aerator also prevents splashing of liquid from the perineum. Eliminating splashing is an improvement over the prior artMixing of the soap with water and the addition of an aerator which improves the mixing of the soap and water are also improvements over the prior art. The mixing chamber and/or aerator can also be made as a replaceable head 25 as shown in
This replaceable head 25 allows for easy cleaning of the device, such as soaking it in disinfectant. Head 25 can also be marked on the outside with identifying numbers or letters, thus allowing each family member or user to have his/her own individually marked head. This seen in the prior art. The replaceable aerator/mixing chamber can also be disposable, thus allowing for more hygienic use in guest bathrooms, vacation homes, or other locations involving multiple users. Such sanitized, disposable attachments can be provided in individually sealed packages in commercial establishments such as restaurants, hotels, office buildings, etc. The prior art does not provide for hygienic, multi-user adaptation.
Additional embodiments are shown in
The water pathway is also illustrated in
The soap pathway is also illustrated. The bulk of the volume of the handle is occupied by the soap reservoir 3. However, soap reservoirs of various volumes may be employed. Alternatively, as seen in
Note the significant reduction in the dimensions of the water channel 11. This is designed to accelerate the speed of water, thus lowering its pressure inside the water channel. This in turn creates a pulling force, drawing the soap into the flowing water stream. The Venturi effect, combined with the one-way soap valve 10, prevents the reflux of water in the soap reservoir 3.
The soap and water are mixed together distal to the one-way soap valve 10 in the soap and water channel 11a, created a mixed soap and water pathway. The mixture then flows to the distal handle end 1b, into head 2 of the device and through the water outlets 8. To obtain soapy water, the user pushes both actuators simultaneously, the soap actuator 5 with the thumb and the water actuator 4 with the second and third fingers. To obtain water only, the user pushes only the water actuator 4.
A key feature of the device is to allow the liquid soap to enter the water stream, without the water refluxing into the soap reservoir 3. Such water backflow would progressively dilute the soap in the soap reservoir, and the reservoir will not empty, since water would gradually replace the soap. Preventing water backflow can be accomplished with different design features, which can be used singly or in combination: As is seen in
Coincident use of the plunger and collapsible reservoir is another embodiment. The plunger 12 may be positioned in the back of the handle, and collapsible reservoir 15a in the front of the handle. The opening from the collapsible reservoir 15a into the water channel 11 will be placed in a deliberately designed narrowing of the water channel, taking advantage of the Venturi principle.
The introduction of liquid soap into the water stream can also occur by creating positive pressure inside the soap compartment, by a spring backed piston mechanism.
Creating positive pressure inside the soap compartment with an air/gas compression mechanism is seen in
An air vent 18, sown in
Any of the above embodiments can be provided with warm water capability in two major ways. First, as seen in
This second T-connector 31a also receives hot water from a hot water valve 33 via a hot water supply hose 33a. An additional mixing valve can be added at this junction to further fine-tune the ratio of cold to hot water. The warm water then flows from the second T-connector 31a to enter the warm water supply tube 34, which is fluidly connected to the hand-held bidet. An optional water filter 34a is shown in this embodiment. This would be especially useful in areas with elevated water sediments, and will prolong the useful life of the device. The head 2 of the device can be placed in a cradle 2a, which is shown attached to the sidewall of the toilet tank.
Outdoor use expands the usage of the device to washing pets, cars or anything else.
Many individuals would desire to use their bidet device away from home and without having onerous installation steps prior to use.
Sink faucets come in a multitude of shapes and sizes. There are available in the market universal faucet couplers with dual threading, internal and external, which allow for attaching aerators or other items to almost any faucet design. A common such coupler in the U.S. has 55/64 inch-27 thread and 15/16 inch-27 thread.
Universal coupler 47a exhibits universal coupler internal threads 47b, universal coupler external threads 47c, coupler male threaded lower stem 47d, which will engage into female threads 51a of brass nut 51. Coupler collar 47e, compression coupler 48, rubber seal, 48a and brass insert, 49 will fit snuggly inside plastic tubing 52. Brass sleeve 50, keeps insert 49 from slipping out of tubing 52 and is compressed by brass nut 51a.
The foregoing descriptions of specific embodiments of the present invention have been presented for the purposes of illustration and description. They are not intended to be exhaustive or to limit the invention to the precise forms disclosed, and obviously many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and its practical application, to thereby enable others skilled in the art to best utilize the invention and various embodiments with various modifications as are suited to the particular use contemplated. It is intended that the scope of the invention be defined by the Claims appended hereto and their equivalents.
This application claims the benefit of Provisional Patent Application 60/962,385 filed Jul. 27, 2007.
Number | Date | Country | |
---|---|---|---|
60962385 | Jul 2007 | US |