Abstract:
A handheld device for providing sexual stimulation includes a plurality of paddles contained by an attachment which can be mounted on a shaft driven by a motor of the device. Different attachments may have different numbers of paddles, and the paddles may be placed differently on different attachments or may have different shapes, among other variations in the paddles. The device is battery-operated, and a charging connection through the device housing is offered through a septum, providing a water-resistant enclosure.

Description:
PRIORITY CLAIM 
     The present application constitutes a continuation of U.S. patent application Ser. No. 13/070,562, entitled SYSTEMS AND METHODS FOR PROVIDING SEXUAL STIMULATION (our ref. WLLR-1-1001-1), naming Eric P. Weller as the inventor, filed Mar. 24, 2011, which is currently co-pending. This application further claims the benefit of U.S. provisional patent application Ser. No. 61/317,066 filed Mar. 24, 2010 (our ref. WLLR-1-1001). The foregoing applications are incorporated by reference in its entirety as if fully set forth herein. 
    
    
     FIELD OF THE INVENTION 
     This invention relates generally to mechanics, and more specifically, to systems and methods for providing sexual stimulation. 
     BACKGROUND 
     Receiving oral sex is a pursuit enjoyed by many. For women, cunnilingus may be an especially enjoyable activity. But for some, several impediments to receiving oral sex with the frequency one might desire may exist. Quite simply, one may not have a partner available to perform the act. Or, a potential partner may be unwilling or not present at the time oral sex is desired. 
     In other situations, a partner is willing and available, but lacks the skill or technique to perform to the satisfaction of the recipient. Other individuals may become fatigued after prolonged periods of providing oral sex. And others may not have any of these problems, but merely desire the variety of a mechanical device to simulate oral sex. 
     Additionally, some report greater satisfaction or likelihood of gratification with oral sex when the technique integrates various motions or rates of repetition. Some have a difficult time expressing to a partner what technique would bring them the most pleasure. A mechanical device for simulating cunnilingus has an advantage because one does not need to worry about how to frame a request to a partner to vary the technique in a manner that will be effective and without the potential for upset. One can merely change the operating mode of the device. 
     A mechanical device can also provide a stronger touch, with greater torque, resistance, or rate of repetition. Further, attachments for a mechanical device can provide a different shape or feel such that the device mimics a human tongue, or feels like something else altogether for variety. For example, for individuals who are survivors of sexual abuse, a non-anthropomorphic attachment may be less threatening. Attachments also facilitate simple cleaning without having to disassemble the device. 
     Additionally, a mechanical device can have a variety of sizes of motors and gearing. Some mechanical devices for sexual pleasure are quite loud or have high rotational speeds that make the device sound like it is whining, which is a distraction and may prevent the device from being pleasurable. If constructed with carefully-selected components, a mechanical device can combine a low rpm motor with gearings to achieve a higher rotational speed of an attachment, minimizing “mosquito-like” whine of the device. The attachment form also ensures the motor is completely enclosed, muting sound from the motor, especially when combined with a sound-absorbing housing. 
     A mechanical device for providing simulated cunnilingus or other stimulation has many benefits. Accordingly, this application discloses a method and system for providing sexual stimulation. 
     SUMMARY 
     This invention relates generally to mechanics, and more specifically, to systems and methods for providing sexual stimulation. In some embodiments, the invention includes a method including applying a device to a part of the body; setting a desired rotational speed for the device; and holding the device more firmly against the part of the body as desired for more pressure. In other embodiments, the invention includes a method including receiving a desired rotational speed; receiving a current pressure value; adjusting the current rotational speed; and sending a rotational speed. In other embodiments, the invention includes a system for providing sexual stimulation, including a user interface, a pressure sensor, a power source, a charging mechanism, a control unit, and a motor. In other embodiments, the invention includes a system for providing sexual stimulation, including a housing, a user interface, a power supply, a motor, a housed shaft, and an attachment. When the user interface is operated, the motor spins the attachment via the housed shaft, and the device is applied to a part of the body providing sexual stimulation. In some embodiments, the invention may include the attachment pressed against the clitoris providing a simulation of cunnilingus. In certain embodiments, the housing is ergonomically designed to provide a comfortable grip when the device is held by either the person being stimulated or by a partner. In certain embodiments, the housing is constructed of a squeezable rubber to minimize vibration and fatigue from holding the device and may be ornately designed with colors, jewels or other designs for a pleasing visual appearance, or may contain lighting features, either for design effect or to cast illumination. In other embodiments, the housing encompasses a reservoir in which lubricant can be stored and dispensed. In certain further embodiments, the port for the charging mechanism is hidden inside the housing, the housing maintaining an airtight seal when there is no charging mechanism connected, but opening slightly when a charging plug is pushed into the housing. In certain further embodiments, the airtight seal of the rubber of the housing is a septum. 
     In some embodiments, the user interface has separate power and speed controls, may include controls to dispense lubricant, and/or may include controls to change the motion of the device, including gyration, vibration, protrusion/retraction, displacement, and/or similar motions. In a certain embodiment, the user interface is contained in a separate device, which is joined to this system by a wire or by a wireless connection. In some embodiments, the user interface has lighting features and/or still or moving camera functionality and/or is configured to send and/or receive data via wireless and/or wired communication (e.g., to present images to a remote individual and/or to allow that remote individual to at least partially control various aspects of the device for providing sexual stimulation). 
     In some embodiments, the attachment includes a base having one or more paddles disposed thereon, wherein the one or more paddles are configured to contact a body part (e.g., a sexual body part) upon revolution of the attachment to simulate cunnilingus. In some embodiments, a plurality of attachments are provided, each having a base with different placements, numbers, lengths, shapes, and/or sizes of paddles disposed thereon. In some embodiments, variations of a number of paddles results in variation of contacts/unit of time (e.g., 4 paddles at 100 rpm results in 400 contacts per minute and 8 paddles at 100 rpm results in 800 contacts per minute). In some embodiments, a rotation of paddles of an attachment may be 100 uniform, alternative, and/or random (e.g., successive paddles being rotated slightly relative to one another). In some embodiments, a paddle may be rounded, flat, or some other uniform and/or non-uniform shape. In some embodiments, a plurality of different removable attachments may be provided each having varying numbers, sizes and/or placements of paddles. In some embodiments, an attachment  412  has a varied texture including ridges, nubs, or other protrusions  105  or cavities and/or has a cavity into which another device, such as a vibrating dildo can be inserted, providing sexual stimulation such as penetration into a human body. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       Embodiments of the present invention are described in detail below with reference to the following drawings: 
         FIG. 1  is a flow diagram of a method for providing sexual stimulation, in accordance with an embodiment of the invention; 
         FIG. 2  is a flow diagram of a method for providing sexual stimulation, in accordance with an embodiment of the invention; 
         FIG. 3  is a block diagram of a system for providing sexual stimulation, in accordance with an embodiment of the invention; 
         FIG. 4  is a partial perspective cross-sectional view of a system for providing sexual stimulation, in accordance with an embodiment of the invention; 
         FIG. 5  is a partial side cross-sectional view of a system for providing sexual stimulation, in accordance with an embodiment of the invention; 
         FIG. 6  is a partial top cross-sectional view of a system for providing sexual stimulation, in accordance with an embodiment of the invention; 
         FIG. 7  is a partial top cross-sectional view of a system for providing sexual stimulation, in accordance with an embodiment of the invention; 
         FIG. 8  is a front view of a system for providing sexual stimulation, in accordance with an embodiment of the invention; 
         FIG. 9  is a perspective view of an attachment for a system for providing sexual stimulation, in accordance with an embodiment of the invention; 
         FIG. 10  is a side view of an attachment for a system for providing sexual stimulation, in accordance with an embodiment of the invention; 
         FIG. 11  is a perspective view of an attachment for a system for providing sexual stimulation, in accordance with an embodiment of the invention; 
         FIG. 12  is a perspective view of an attachment for a system for providing sexual stimulation, in accordance with an embodiment of the invention; and 
         FIG. 13  is a perspective view of an attachment for a system for providing sexual stimulation, in accordance with an embodiment of the invention. 
     
    
    
     DETAILED DESCRIPTION 
     The invention relates generally to mechanics, and more specifically, to systems and methods for providing sexual stimulation. Specific details of certain embodiments of the invention are set forth in the following description and in  FIGS. 1-13  to provide a thorough understanding of such embodiments. The present invention may have additional embodiments, may be practiced without one or more of the details described for any particular described embodiment, or may have any detail described for one particular embodiment practiced with any other detail described for another embodiment. 
       FIG. 1  is a flow diagram of a method for providing sexual stimulation, in accordance with an embodiment of the invention. In some embodiments, method  100  is performed using a system for providing sexual stimulation. Method  100  includes applying a device to a part of the body  102 ; setting a desired rotational speed for the device  104 ; and holding the device more firmly against the part of the body as desired for more pressure  106 . For example, the applying a device to a part of the body  102  may include applying a device to any body part for which stimulation is desired. For example, the device can be applied to the clitoris, the labia, the vulva, or other parts of the anatomy to be stimulated. 
     The setting a desired rotational speed for the device  104  may include setting any value from a range of rpm. For example, 5 rpm may be a desirable rotational speed for optimal stimulation. During method  100 , different rpm can be selected for variety. For example, at the beginning of the stimulation, 5 rpm may be selected, but after a period of time, 10 rpm may be desired and selected. 
     The holding the device more firmly against the part of the body as desired for more pressure  106  may include barely permitting the device to touch the body part. After a period of time, more pressure may be desired and holding the device more firmly against the body part may be included. 
       FIG. 2  is a flow diagram of a method for providing sexual stimulation, in accordance with an embodiment of the invention. In some embodiments, method  200  is performed by a hardware implementation of a system for providing sexual stimulation. Method  200  includes receiving a desired rotational speed  202 ; receiving a current pressure value  204 ; adjusting the current rotational speed  206 ; and sending a rotational speed  208 . 
     At operation  202 , the receiving a desired rotational speed may include receiving the desired rotational speed via a user interface, a remote control, or a data packet. In some embodiments, the system for providing sexual stimulation receives the desired rotational speed  202  from a rotary dial or other similar physical switch on the unit. In different embodiments, the system for providing sexual stimulation receives the desired rotational speed  202  from a remote control embodied in a different physical device connected by wire. In other embodiments, the system for providing sexual stimulation receives the desired rotational speed  202  from a data packet. For example, the system for providing sexual stimulation may include a wireless networking connection, such that a user at a remote computer can select the desired rotational speed. 
     At operation  204 , the receiving a current pressure value may include receiving the current pressure value via a pressure sensor. In some embodiments, the system for providing sexual stimulation includes a pressure sensor that measures how firmly the device is held against a part of the body  106 . The resulting pressure value enables the system to maintain a constant rotational speed even when significant force is being used to hold the device against the body, retarding the rotation. 
     At operation  206 , the adjusting the current rotational speed may include adjusting the rotational speed for various received current pressure values  204 . In some embodiments, the device attempts to maintain the rotational speed received at  202  irrespective of the current pressure value received at  204 . For example, if the system senses more pressure being applied, the friction from which would slow the rotation, at operation  206  the system compensates for the added pressure by adjusting the rotational speed to keep it constant. 
     At operation  208 , the sending a rotational speed may include sending a signal representing the speed at which the device should make rotations. In some embodiments, the device includes a motor, and the rotational speed of the motor is controlled by sending a rotational speed at  208 , taking into account the rotational speed received at  202 , compensating for any current pressure value received at  204 , and adjusting the current rotational speed  206  accordingly. 
       FIG. 3  is a block diagram of a system for providing sexual stimulation, in accordance with an embodiment of the invention. In one embodiment, a system for providing sexual stimulation includes a user interface  302 , a pressure sensor  304 , a power source  306 , a charging mechanism  308 , a control unit  310 , and a motor  312 . The user interface  302  enables the device to be turned on and off, and a rotational speed value to be selected. In some embodiments, the user interface  302  is a part of the device itself. In other embodiments, the user interface  302  is remote. In a certain embodiment, the user interface  302  is contained in a separate device, which is joined to this system by a wire. In another certain embodiment, the user interface  302  is contained in a separate device, which is joined to this system by a wireless connection. In some embodiments, the user interface  302  has lighting features. In other embodiments, the user interface  302  provides still or moving camera functionality. In some embodiments, the user interface  302  includes controls for other motions, which may include gyration, vibration, protrusion/retraction, displacement, and/or similar motions. In some embodiments, the user interface  302  is configured to enable the speed to be varied in a binary fashion, or in adjustable increments. In other embodiments, the user interface  302  can accept various audible commands at varying intensities. In further embodiments, the user interface  302  can make audible sounds, such as computer-generated tones or music, or simulated and/or recorded human voices. In different embodiments, the user interface  302  includes a projector configured to project images on a surface (e.g., a ceiling). In other embodiments, the user interface  302  is configured to send and/or receive data via wireless and/or wired communication (e.g., to present images to a remote individual and/or to allow that remote individual to at least partially control various aspects of the device for providing sexual stimulation). In other embodiments, the user interface  302  can include controlling a desired amount of lubricant to be dispensed. 
     The pressure sensor  304  provides a current pressure value. In some embodiments, the current pressure value represents the pressure with which the device is being pressed against a body part. 
     The power source  306  provides power to the device. In some embodiments, the power source  306  may be one or more disposable battery cells. In other embodiments, the power source  306  may be one or more rechargeable battery cells. In other embodiments, the power source  306  may be a direct connection to household electric power. In other embodiments, the power source  306  may be a direct connection to any source of electric power, including alternating or direct current, with any range of input voltage from 0 to 500 VDC (e.g. 9-220 VDC). 
     The charging mechanism  308  provides a means of providing power to the device. In some embodiments, the charging mechanism  308  is a direct electrical connection. In other embodiments, the charging mechanism  308  is a touch-free magnetic connection. In other embodiments, the charging mechanism  308  is a solar charge. In other embodiments, the charging mechanism  308  is one or more of the above charging mechanisms. 
     The control unit  310  receives input from the user interface  302  and the pressure sensor  304  to maintain a desired rotational speed. In some embodiments, the control unit  310  is powered by the power source  306 . In other embodiments, the control unit  310  receives power directly from the charging mechanism  308 . In certain embodiments, the control unit  310  diverts power from the charging mechanism  308  to the power source  306  to recharge the power source  306 . In some embodiments, the control unit  310  controls output to the user interface  302 . For example, the output to the user interface  302  could be display data, camera controls, networking packet data, an indication of remaining battery charge, an indication of the current speed and/or pressure, and/or other types of output. The control unit  310  may also include controls for lighting features of the device, or audio programming such as computer-generated tones, music and/or voices. The control unit  310  may facilitate different motions of which the device is capable, including gyration, vibration, protrusion/retraction, displacement, and/or similar motions. 
     The motor  312  receives a desired rotational speed from the control unit  310 . The motor  312  drives a shaft to which various attachments are couplable. In one embodiment, the motor  312  is configured to cause rotation from approximately 0 to 1000 rpm (e.g., 0-200 rpm). In some embodiments, the motor speed is provided by the user interface at  302 . In other embodiments, the motor  312  is capable of facilitating various motions, including gyration, vibration, protrusion/retraction, displacement, and/or similar motions. In a certain embodiment, the motor  312  has a cutoff feature where if too much pressure is applied that retards the motion of the motor, the motor stops operating before the motor experiences a mechanical fault. 
       FIGS. 4-8  are various views of a system for providing sexual stimulation, in accordance with an embodiment of the invention. In one embodiment, system  400  includes a housing  402 , a user interface  404 , a power supply  406 , a motor  408 , a housed shaft  410 , and an attachment  412 . When the user interface  404  is operated, the motor  408  spins the attachment  412  via the housed shaft  410 , and the device  400  is applied to a part of the body providing sexual stimulation. For example, the applied to a part of the body providing sexual stimulation may include the attachment  412  pressed against the clitoris providing a simulation of cunnilingus. 
     In certain embodiments, the housing  402  is ergonomically designed to provide a comfortable grip when the device  400  is held by either the person being stimulated or by a partner. In certain further embodiments, the housing  402  is elongated and cylindrical. In certain other embodiments, the housing  402  is differently shaped, such as with a bend (e.g., an approximately 20 degree bend) to further improve ergonomics. In some embodiments, the housing  402  is adjustable in length and/or bend. In some embodiments, the housing  402  includes one or more posts to support the device  400  against a surface. In other embodiments, the housing  402  includes a strap so that the device  400  does not have to be gripped but is held in place by the strap, enabling easier use of the device  400  and/or use of the device  400  by those who are unable to grip it due to physical disability or arthritis. In another embodiment, the housing  402  is constructed of a sound-absorbing material to mask the noise of the motor  408  for less aural distraction and greater enjoyment. 
     In other embodiments, the housing  402  includes a removable cover to provide access to the compartment in which batteries are contained for a power source. In certain embodiments, the housing  402  is constructed of a squeezable rubber to minimize vibration and fatigue from holding the device  400 . In other embodiments, the housing  402  is ornately designed with colors, jewels or other designs for a pleasing visual appearance. In some embodiments, the housing  402  is transparent. In other embodiments, the housing  402  contains lighting features, either for design effect or to cast illumination. In other embodiments, the housing  402  encompasses a reservoir in which lubricant can be stored and dispensed, and the housing  402  has a port for adding lubricant to the reservoir. In some embodiments, the housing  402  has a port for a recharging mechanism. In certain further embodiments, the port for the charging mechanism is hidden inside the housing  402 , the housing  402  maintaining an airtight seal when there is no charging mechanism connected, but opening slightly when a charging plug is pushed into the housing  402 . In certain further embodiments, the airtight seal of the rubber of the housing  402  is a septum. 
     In some embodiments, the user interface  404  is a speed control only, at which the lowest setting is off. In other embodiments, the user interface  404  has separate power and speed controls. In other embodiments, the user interface  404  includes controls to dispense lubricant. In other embodiments, the user interface  404  includes controls to change the motion of the device, including gyration, vibration, protrusion/retraction, displacement, and/or similar motions. In other embodiments, the user interface  404  enables the user to select whether the device  400  should maintain a constant rotational speed, or allow pressure to slow the device  400 . In other embodiments, the user interface  404  is a touch screen allowing access to all functions of the device  400 . In other embodiments, the user interface  404  displays information, such as the rotational speed, power source, or remaining charge of the battery. In some embodiments, the user interface  404  is configured to enable the speed to be varied in a binary fashion, or in adjustable increments. In other embodiments, the user interface  404  can accept various audible commands at varying intensities. 
     In some embodiments, the user interface  404  is a part of the device  400  itself. In other embodiments, the user interface  404  is remote. In a certain embodiment, the user interface  402  is contained in a separate device, which communicates with system  400  by a wire. In another certain embodiment, the user interface  404  is contained in a separate device, which communicates with system  400  by a wireless connection. In some embodiments, the user interface  404  has lighting features. In other embodiments, the user interface  404  provides still or moving camera functionality. In further embodiments, the user interface  404  can make audible sounds, such as computer-generated tones or music, or simulated and/or recorded human voices. In different embodiments, the user interface  404  includes a projector configured to project images on a surface (e.g., a ceiling). In other embodiments, the user interface  404  is configured to send and/or receive data via wireless and/or wired communication (e.g., to present images to a remote individual and/or to allow that remote individual to at least partially control various aspects of the device  400  for providing sexual stimulation). In other embodiments, the user interface  404  has a timer. 
     In some embodiments, the power supply  406  provides power to the device. In some embodiments, the power supply  406  may be one or more disposable battery cells. In other embodiments, the power supply  406  may be one or more rechargeable battery cells. In other embodiments, the power supply  406  may be a direct connection to household electric power. In other embodiments, the power supply  406  may be a direct connection to any source of electric power, including alternating or direct current, with any range of input voltage from 0 to 500 VDC (e.g., 9-220 VDC). 
     In some embodiments, the motor  408  drives a shaft to which removable hub assemblies are couplable. In some embodiments, the motor  408  is configured to cause rotation from approximately 0 to 1000 rpm (e.g., 0-200 rpm). In other embodiments, the motor  408  can provide a constant rotational speed irrespective of the pressure with which the device is held against a body part. In other embodiments, the motor  408  is capable of facilitating various motions, including gyration, vibration, protrusion/retraction, displacement, and/or similar motions. In a certain embodiment, the motor  408  has a cutoff feature where if too much pressure is applied that retards the motion of the motor  408 , the motor  408  stops operating before the motor experiences a mechanical fault. 
     In some embodiments, the housed shaft  410  is directly driven by the motor  408  and is couplable to attachments  412 . In other embodiments, the housed shaft  410  is driven the motor  408  by an angled gearing, the gearing provided to either facilitate a bend in the device, or to permit different rotational speeds of the motor  408  and housed shaft  410 . In some embodiments, the housed shaft  410  is partially covered by the housing  402 , and partially exposed when the attachment  412  is removed. In some embodiments, the housed shaft  410  is configured to removably receive one or more attachments. In some embodiments, the housed shaft  410  is configured to being substantially permanently coupled to one or more attachments  412 . In some embodiments, the housed shaft  410  is articulatable. In other embodiments, the housed shaft  410  is configured to rotate obliquely. In other embodiments, the housed shaft  410  moves, shifts, and/or rotates under pressure to provide “give”. In other embodiments, the housed shaft  410  may also house a pressure sensor. 
     In some embodiments, the housed shaft  410  houses a removable hub assembly. A removable hub assembly may include a hexagonal spindle, which may include two surface projections to resist attachment slippage. A hexagonal spindle may range from 0.25″ to 24″ in length (e.g., 1.25″ in length). A hexagonal spindle may range from 0.1″ to 3″ in diameter (e.g., 0.25″ in diameter). In other embodiments, the removable hub assembly is non-hexagonal (e.g., cylindrical, triangular, cubical, or other uniform or non-uniform shape) having length and diameter ranges articulated for the hexagonal spindle. In some embodiments, the removable hub assembly is a different uniform and/or non-uniform diameter and/or length. In some embodiments, a removable hub assembly is configured to being substantially permanently coupled to one or more attachments. In some embodiments, a removable hub assembly is magnetic. In some embodiments, a removable hub assembly couples via a ball and socket mechanism. In some embodiments, a removable hub assembly includes one or more surface projections, which may be differently positioned and/or differently shaped (e.g., no surface projections). 
     In some embodiments, the housed shaft  410  houses a fixed hub assembly. A fixed hub assembly may include a hexagonal spindle, which may include two surface projections to resist attachment slippage. A hexagonal spindle may range from 0.25″ to 24″ in length (e.g., 1.25″ in length). A hexagonal spindle may range from 0.1″ to 3″ in diameter (e.g., 0.25″ in diameter). In other embodiments, the fixed hub assembly is non-hexagonal (e.g., cylindrical, triangular, cubical, or other uniform or non-uniform shape) having length and diameter ranges articulated for the hexagonal spindle. In some embodiments, the fixed hub assembly is a different uniform and/or non-uniform diameter and/or length. In some embodiments, a fixed hub assembly is configured to being substantially permanently coupled to one or more attachments. In some embodiments, a fixed hub assembly is magnetic. In some embodiments, a fixed hub assembly couples via a ball and socket mechanism. In some embodiments, a fixed hub assembly includes one or more surface projections, which may be differently positioned and/or differently shaped (e.g., no surface projections). 
     In some embodiments, the attachment  412  is spun by the motor  408  via the housed shaft  410  with which the attachment  412  is couplable. In some embodiments, an attachment  412  includes a base having one or more paddles disposed thereon, wherein the one or more paddles are configured to contact a body part (e.g., a sexual body part) upon revolution of the attachment  412 . In one embodiment, the attachment  412  is configured to removably circumscribe a removable or fixed hub assembly inside the housed shaft  410 . In some embodiments, the attachment  412  includes one or more indentations to receive one or more surface projections of a removable or fixed hub assembly inside the housed shaft  410 . In some embodiments, a plurality of attachments  412  are provided, each having a base with different placements, numbers, lengths, shapes, and/or sizes of paddles disposed thereon. In some embodiments, the attachment  412  is constructed of a porous, “weeping” material through which lubricant is dispensed over a period of time. 
     In some embodiments, variations of a number of paddles results in variation of contacts/unit of time (e.g., 4 paddles at 100 rpm results in 400 contacts per minute and 8 paddles at 100 rpm results in 800 contacts per minute). In some embodiments, variations of a length of paddles results in variations of force/contact (e.g., a short paddle results in more force per contact than a long paddle). In some embodiments, a number of paddles of an attachment may range from approximately 1 to 1000 (e.g., around 4 to 8). In some embodiments, a length of paddles of an attachment  412  may range from approximately 0.01″ to 24″ (e.g., around 0.25″ to 1″). In some embodiments, a width of paddles of an attachment  412  may range from approximately 0.01″ to 5″ (e.g., 0.25″ to 0.375″). In some embodiments, a placement of paddles of an attachment  412  may be uniform, alternative, and/or random (e.g., each paddle being aligned, successive paddles being oppositely disposed along sides of an attachment  412 , successive paddles being randomly disposed along a width of an attachment  412 ). In some embodiments, a rotation of paddles of an attachment  412  may be uniform, alternative, and/or random (e.g., successive paddles being rotated slightly relative to one another). In some embodiments, a paddle may be rounded, flat, or some other uniform and/or non-uniform shape. In some embodiments, a paddle may include a plurality of strands, strings and/or hair or hair-like structures. In some embodiments, a paddle may be rotatable, anglable, vibratable, gyratable, and/or configurable to protrude and/or retract relative to an attachment  412  base. In some embodiments, a paddle moves, shifts, and/or rotates under pressure to provide “give”. In some embodiments, a paddle may include one or more internal channels to deliver lubricant. In some embodiments, a paddle may include a lighting feature to achieve either a design effect, illumination, or for any other purpose. In some embodiments, a paddle may be movable, removable, and/or replaceable relative to an attachment  412  base. In some embodiments, a plurality of different removable attachments  412  may be provided each having varying numbers, sizes and/or placements of paddles. In some embodiments, an attachment  412  is configured to substantially permanently couple to a removable hub assembly contained in the housing shaft  410 . In some embodiments, an attachment  412  is composed of silicone or other similar material. In some embodiments, an attachment  412  has a varied texture including ridges, nubs, or other protrusions or cavities. In some embodiments, an attachment  412  has a cavity into which another device, such as a vibrating dildo can be inserted, providing sexual stimulation such as penetration into a human body. In some embodiments, an attachment  412  has no paddles and no cavity and is itself a dildo, which may or may not vibrate, which provides sexual stimulation such as penetration into a human body. 
       FIGS. 9-13  are various views of attachments for a system for providing sexual stimulation, in accordance with embodiments of the invention. In one embodiment, an attachment  900  includes a base  902  and one or more paddles  904 . In some embodiments, an attachment  900  may further include a rubber cover at  906 . In other embodiments, an attachment  900  may have a solid center at  906 . 
     In some embodiments, an attachment  900  has a base  902  which circumscribes a cavity by which a spindle or other removable or fixed hub assembly inside the housed shaft  410  is couplable. 
     In some embodiments, an attachment  900  has one or more paddles  904  disposed thereon, wherein the one or more paddles  904  are configured to contact a body part (e.g., a sexual body part) upon revolution of the attachment  900 . In one embodiment, the attachment  900  is configured to removably circumscribe a removable or fixed hub assembly inside the housed shaft  410 . In some embodiments, the attachment  900  includes one or more indentations to receive one or more surface projections of a removable or fixed hub assembly inside the housed shaft  410 . In some embodiments, a plurality of attachments  900  are provided, each having a base  902  with different placements, numbers, lengths, shapes, and/or sizes of paddles  904  disposed thereon. In some embodiments, the attachment  900  is constructed of a porous, “weeping” material through which lubricant is dispensed over a period of time. 
     In some embodiments, variations of a number of paddles  904  results in variation of contacts/unit of time (e.g., 4 paddles  904  at 100 rpm results in 400 contacts per minute and 8 paddles  904  at 100 rpm results in 800 contacts per minute). In some embodiments, variations of a length of paddles  904  as in  FIG. 12  results in variations of force/contact (e.g., a short paddle  904  results in more force per contact than a long paddle  904 ). In some embodiments, a number of paddles  904  of an attachment  900  may range from approximately 1 to 1000 (e.g., around 4 to 8). In some embodiments, a length of paddles  904  of an attachment  900  may range from approximately 0.01″ to 24″ (e.g., around 0.25″ to 1″). In some embodiments, a width of paddles  904  of an attachment  900  may range from approximately 0.01″ to 5″ (e.g., 0.25″ to 0.375″). In some embodiments, a placement of paddles  904  of an attachment  900  may be uniform, alternative, and/or random (e.g., each paddle  904  being aligned as in  FIG. 11 , successive paddles  904  being oppositely disposed along sides of an attachment  900  as in  FIG. 13 , successive paddles  904  being randomly disposed along a width of an attachment  900 ). In some embodiments, a rotation of paddles  904  of an attachment  900  may be uniform, alternative, and/or random (e.g., successive paddles  904  being rotated slightly relative to one another). In some embodiments, a paddle  904  may be rounded, flat, or some other uniform and/or non-uniform shape. In some embodiments, a paddle  904  may include a plurality of strands, strings and/or hair or hair-like structures. In some embodiments, a paddle  904  may be rotatable, anglable, vibratable, gyratable, and/or configurable to protrude and/or retract relative to an attachment  900  base  902 . In some embodiments, a paddle  904  moves, shifts, and/or rotates under pressure to provide “give”. In some embodiments, a paddle  904  may include one or more internal channels to deliver lubricant. In some embodiments, a paddle  904  may include a lighting feature to achieve either a design effect, illumination, or for any other purpose. In some embodiments, a paddle  904  may be movable, removable, and/or replaceable relative to an attachment  900  base  902 . In some embodiments, a plurality of different removable attachments  900  may be provided each having varying numbers, sizes and/or placements of paddles  904 . In some embodiments, an attachment  900  is configured to substantially permanently couple to a removable hub assembly contained in the housing shaft  410 . In some embodiments, an attachment  900  is composed of silicone or other similar material. In some embodiments, an attachment  900  has a varied texture including ridges, nubs, or other protrusions or cavities. In some embodiments, an attachment  900  has a cavity into which another device, such as a vibrating dildo can be inserted, providing sexual stimulation such as penetration into a human body. In some embodiments, an attachment  900  has no paddles and no cavity and is itself a dildo, which may or may not vibrate, which provides sexual stimulation such as penetration into a human body. 
     While preferred and alternative embodiments of the invention have been illustrated and described, as noted above, many changes can be made without departing from the spirit and scope of the invention. Accordingly, the scope of the invention is not limited by the disclosure of these preferred and alternate embodiments. Instead, the invention should be determined entirely by reference to the claims that follow.