1. Field of the Invention
The present disclosure relates to a device for assisting with entering and exiting a swimming pool, and more particularly, to a device that supports and moves a user between the deck and floor of a swimming pool.
2. Background of the Related Art
People of all ages, fitness, and health levels use swimming pools for a wide array of activities, including recreation, swimming, and physical therapy. Water-based exercises provide numerous substantial benefits to those whose physical health has been compromised by an injury, illness, or age. Medical practitioners often advise patients recovering from various injuries to exercise in a swimming pool to facilitate recovery. Individuals with joint and muscle-skeletal issues may benefit greatly from water-based exercise because it can improve joint health, decrease pain from osteoarthritis, and maintain a healthy skeletal system. Water-based exercise also an excellent fitness activity for pregnant women.
Many disabled, injured, pregnant, and elderly individuals often encounter difficulties entering and exiting a pool. Pool ladders require a fair amount of upper and lower body strength, and can be dangerous. A number of devices and methods addressing this issue are known in the art, but have substantial drawbacks. For example, U.S. Pat. No. 4,630,709 to Taylor, the disclosure of which is hereby incorporated by reference herein in its entirety, teaches a ramp with a downward slope extending from a position above the pool deck at a height of a wheelchair seat to a position adjacent the water. A wheelchair user must position the wheelchair adjacent to the ramp, transfer his or her body onto the ramp, and then use the handrails on the ramp to slide into the pool using upper body strength.
Another pool entry device is disclosed in U.S. Pat. No. 4,418,792 to Cerone, the content of which is hereby incorporated by reference herein in its entirety. This device is a modified version of a pool ladder, and includes two steps, one at essentially the same height as a wheelchair seat, and the other slightly above a wheelchair foot rest. The user must rely on his or her own body strength to transfer from the wheelchair onto the ladder, and must then be sufficiently mobile to use the steps and handrails to enter the pool.
An electronic and hydraulic chair lift for pool entry is disclosed in U.S. Pat. No. 4,221,008 to Nolan, the content of which is hereby incorporated by reference herein in its entirety. This device uses hydraulics to raise and lower a chair in a helical pattern to transfer the user between the pool deck and water. Although hydraulics eliminate or reduce the strength and mobility needed by the user, such devices require professional installation, and often are too expensive to be a viable solution for private residential pools. Further, as the chair of Nolan is incapable of translational horizontal movement, it is not suitable for pools with a lip size of eighteen inches or greater because the chair will be too far away from the deck.
Accordingly, there remains a continued need in the art for a comfortable, safe, simple to use, and storable device capable of assisting users into and out of swimming pools.
The subject disclosure is directed to a system for moving a user between a deck and a floor of a swimming pool. The system includes a rail assembly having at least one rail configured to extend between the deck and the pool floor, a seat assembly configured for rolling engagement with the at least one rail, and a drive mechanism configured to translate the seat assembly along the at least one rail.
The rail assembly can include a first rail having an upper portion configured for coupling to and extending upward from the deck, a lower portion configured for engaging the floor, and an intermediate portion coupled to the upper and tower portions and configured for supporting and guiding the seat assembly between an elevated position adjacent the deck and a lowered position a predefined distance from the pool floor.
The seat assembly can include a seat and a movable platform having one or more wheels and mounting structure for coupling the seat to the plurality of wheels. The mounting structure can include a first plate, a second plate movable relative to the first plate, and one or more axels coupled to the first and second plates and one or more wheels with the wheels configured for rolling engagement with the rail assembly. The seat can be formed with a buoyant material and manually detachable from the movable platform.
In certain embodiments, the rail assembly includes two rails substantially parallel to one another with one or both of the rails defining a stop configured to prevent the seat assembly from translating closer to the floor than a lowered predetermined position.
In certain embodiments, the drive mechanism includes a cable for engaging the seat assembly. A motor is operatively associated with the cable for driving translation of the seat assembly along the at least one rail. The cable can extend through an interior portion and mounting plate of the rail assembly.
In accordance with certain embodiments, the rail assembly includes a wall defining an interior portion and a slot in communication with the interior portion with the cable extending through the interior portion and the slot.
In certain embodiments, the drive mechanism includes a manually operated hand crank mounted to the seat assembly, and additionally or alternatively, a hand crank mounted to the rail assembly. The hand cranks are operatively associated with the cable and a pulley system for manually driving translation of the seat assembly along the at least one rail by a user in the seat assembly or by a second user adjacent the assembly. A counterweight and springs may also be utilized to translate the seat assembly toward the first elevated position when the seat is unoccupied. The counterweight can be configured to store water.
In accordance with certain embodiments, the intermediate portion of each rail can be configured for orientation perpendicular to or at an acute angle relative to the floor of the pool.
These and other features of the systems and methods of the subject disclosure will become more readily apparent to those skilled in the art from the following detailed description of exemplary embodiments taken in conjunction with the drawings.
So that those having ordinary skill in the art to which the subject invention pertains will more readily understand how to make and use the system of the subject disclosure, various embodiments thereof are described in more detail below with reference to the drawings, wherein:
In the following detailed description, reference is made to the accompanying drawings, which form a part hereof, and within which are shown by way of illustration specific embodiments by which the invention may be practiced. It will be understood that other embodiments may be utilized and structural changes may be made without departing from the spirit and scope of the present disclosure.
As used in this specification and the appended claims, the singular forms “a”, “an”, and “the” include plural referents unless the content clearly dictates otherwise, and the term “or” is generally employed in its sense including “and/or” unless the context clearly dictates otherwise. In the drawings, like reference numerals identify similar structural features or aspects of the subject disclosure.
For purposes of explanation and illustration, and not limitation, an exemplary embodiment of a system for moving a user between a deck and a floor of a swimming pool in accordance with the present disclosure is shown in
Rail assembly 12 includes one or more rails 18A, 18B shaped to extend between a deck 20 and a floor 22 of a swimming pool, and in a preferred embodiment, a mounting plate 21 for mounting rails 18A, 18B to deck 20. Rails 18A, 18B can be mounted substantially parallel to one another along the entire length thereof, and each includes an upper portion 24 fixed to deck 20, a lower portion 26 engaged with floor 22, and an intermediate portion 28 coupled to upper and lower portions 24, 26 for supporting and guiding seat assembly 14 between an elevated position adjacent deck 20 (e.g.,
Rails 18A, 18B may be provided with one or more stops for preventing seat assembly 14 from translating along rails 18A, 18B closer to floor 22 than a desired lowered position (e.g., below a depth of eighteen inches under water), which may vary depending on the height of the user's torso in a sitting position. Such stops on rails 18A, 18B may be adjustable to accommodate the specifications of the pool, including the depth of the pool and the distance between the surface of the water and the surface of deck 20. For example, the stops may be formed as metal pieces extending upward from intermediate portion 28 and/or lower portion 26 which contact seat assembly 14 when seat assembly 14 reaches a predetermined lowered position. The stops may alternatively be configured as C-shaped clamps or clamps similar to those used in weight assemblies which slidably engage with or are fixed to intermediate portion 28 of rails 18A, 18B near a bottom portion thereof such that they contact, slow, and stop descent of seat assembly 14 at an end of intermediate portion 28.
Portions of rails 18A, 18B (e.g., upper portion 24) may be formed hollow in order to house cables, electrical wires biasing members, and other such components that could potentially pose a safety concern, especially with respect to children. Housing these components within rails 18A, 18B can reduce or eliminate direct access to them, and thus increase safety. Rails 18A, 18B can also function as a protective housing for various components.
Upper portion 24 of rails 18A, 18B may be mounted to deck 20 with mounting plate 21 such that mounting plate 21 functions as a structural anchor and enables retro installation of system 10 to preexisting pools. Mounting plate 21 is bolted to deck 20 with screws (not shown), and includes cylindrical hubs 23A, 23B configured to receive the ends of upper portion 24 of rails 18A, 18B respectively. Upper portion 24 may be segmented into multiple pieces as shown in
Referring to
Footer 33 also includes a fixed bracket pair 125A, 125B spaced from each other but connected by an anchor 140. Brackets 125A, 125B extend into above ground feet 129A, 129B, respectively. Again, brackets 125A, 125B are hollow for receiving rails 18A, 18B therein. A footer 33, by contrast, requires minimal drilling into deck 20, and can be bolted into deck 20 using any number of bolts while remaining on the surface of deck 20.
Referring again to
As shown in
Movable platform 34 may include a single or multiple upper wheels 36A to allow sliding of seat assembly 14 along a single rail 18A, 18B (or both), and preferably additionally includes a single or multiple lower wheels 36B below a rail 18A, 18B (or both) (
Mounting structure 38 of movable platform 34 also includes side plates 50, 52, each having respective upper axels 54A, 54B (
As shown in
In this manner, movable platform 34 places seat assembly 14 in rolling engagement with rail assembly 12 with upper wheels 36A, 36B supporting seat assembly 14 and lower wheels 36A, 36B providing further stability for seat assembly 14 and preventing it from derailing or tipping. It will be appreciated that lower wheels 36A, 36B provide an added safety feature since a user will likely move around in seat 32 while getting in and out and during use, which can increase a risk of seat assembly 14 derailing. Other suitable means of achieving a movable (e.g., sliding or rolling) relationship between seat assembly 14 and the rail assembly 14 may be utilized.
Mounting structure 38 of movable platform 34 is also preferably configured with locking structure which interfaces with locking structure on rails 18A, 18B to selectively engage and disengage the rolling relationship between seat assembly 14 and rail assembly 12, particularly in the elevated and lowered positions. In this manner, a user can ensure that seat assembly 14 does not move along rails 18A, 18B while the user is entering or exiting seat 32. For example, holes may be formed along upper and lower portions of intermediate section 28 of rails 18A, 18B in into which a locking member (e.g., hooks) disposed on and attached to seat 32 may be inserted, thus locking seat assembly 14 in place. Other locking means may be utilized including, for example, manually driven and motor powered cables as further discussed below.
Continuing with
A second hand crank 64 may be attached to upper portion 24 of rail assembly 12 and similarly placed in operative engagement with a rear section of seat assembly 14 and a pulley system attached to rail assembly 12. In this manner, hand cranks 62, 64 are manually operable to allow controlled translation of seat assembly 14 downward toward floor 22, or to drive upward translation of seat assembly 14 toward deck 30 along rails 18A, 18B. For example, hand crank 62 positioned on seat 32 may be operated by the user sitting in the seat, while hand crank 64 positioned on upper portion 24 of rail 18B may be operated by a third party, such as a caregiver or medical personnel. It will be appreciated that hand-cranks are simple to operate and inexpensive to produce. Additionally, the absence of electronic parts reduces maintenance, keeps the system 10 simpler, and can reduce the risk of malfunction.
In operation, lowering seat assembly 14 from the first raised position adjacent deck 20 to a second lowered position a predetermined distance from floor 22 is accomplished by gravity. However, seat assembly 14 is preferably guided downward along intermediate portion 28 of rail assembly 12 at a controlled rate. It will be appreciated that in addition to use of hand cranks 62, 64, acceleration and velocity of seat assembly 14 may be adjusted by changing the angle of the slope of rails 18A, 18B relative to deck 20 and floor 22, and/or by using hydraulic dampers, dampening bearings on wheels 36A, 36B, a counterweight mechanically coupled to seat assembly 14, or with other biasing elements.
Drive mechanism 16 may also be configured to automatically raise seat assembly 14 to the elevated default position adjacent deck 20 after a user exits seat 32. Such automatic elevation of seat assembly 14 may be achieved by connecting biasing members, such as resistance rubber bands or springs, between upper portion 24 of rails 18A, 18B and a portion of seat assembly 14. As mentioned above, a counterweight (e.g., configured to store water and/or other weights) may additionally be utilized. The counterweight can be operatively coupled to the pulley system and configured to translate seat assembly 14 toward the elevated position adjacent deck 20 when seat 32 is unoccupied. The counterweight may be configured to store varying amounts of pool water to generally reduce overall weight, and to apply different biasing forces. Thus, its weight can be selected proportional to the weight of the user to help with controlled descent when the user is in seat 32. After the user exits seat 32, the counterweight may drive translation of seat assembly 14 back to the default raised position. It will be appreciated that such biasing members will also help control the rate of descent of seat assembly 14 and decrease the amount of work required to raise seat assembly 14 via cranks 62, 64.
Referring now to
Motor 162 is powered by battery 164, which is housed in a separate, easily removable compartment 174 in drive system enclosure 170. Battery 164 may be connected to a voltage regulator to additionally supply power to electronic circuitry 167, which may include a wireless receiver, processing unit, and feedback system. The wireless receiver within enclosure 170, along with a wireless transmitter controller operatively associated with (e.g., mechanically or electrically coupled to) seat assembly 14, can provide input signals to a processing unit (e.g., circuit board or microcontroller of electronic circuitry 167) for controlling operation of motor 162 to ravel and unravel cable 168 on winch 166.
Cable 168 has a distal end 169 attached (e.g., hooked or snared) to a portion (e.g., mounting structure 138) of seat assembly 114, and may be looped over a pulley 171 disposed inside an upper portion 124 of a rail 118A of rail assembly 112 (
As best shown in
In certain embodiments, electronic circuitry 167 may be configured with a feedback system and sensors capable of monitoring and measuring various parameters, including, but not limited to, internal temperature, internal humidity, motor voltage, current, torque applied by motor 162, potential voltage difference with ground. Force sensors may also be provided within seat 132 to measure the weight of the user. Such components can function as diagnostic equipment which relays appropriate data to technicians for customer service if needed.
In certain embodiments, additional circuitry may be provided on seat assembly 114 which collects data associated with the user (e.g., input from a joystick control 115 on seat 32, arm 33 or the like) or other input device or interface which allows the user to control operation of drive mechanism 116 and/or seat assembly 114. For example, if a user inputs a particular position of joystick control 115, a wireless input to components of electronic circuitry 167 in drive system enclosure 170 causes engagement of motor 162 and winch 166 to pull seat assembly 114 back to the elevated position. Such inputs may also be provided remotely by other users such as assistants or medical personnel by remote devices which run on batteries that can be either recharged in a waterproof housing, or by, for example, foot pedals coupled to drive system 116 adjacent enclosure 170. A safety button may also be provided to such remote devices for situations where a user is in the pool and the seat assembly 114 is at the elevated position. The button, once depressed, supplies a wireless input to electronic circuitry 167 to engage drive assembly 116 to lower seat assembly 114.
In accordance with certain embodiments, components of system 100 may be equipped with solar panels for recharging batteries, an umbrella attachment to help keep components cool and maintain an aesthetically pleasing appearance, and a separate flotation device 137 on seat 132 which may automatically detach if seat 132 submerges too far in the water, or which the user can detach from seat 132 and use as a floatation device in the water; otherwise flotation device 137 helps maintain buoyancy of seat 132.
While the system and method of the subject disclosure has been described with respect to preferred and exemplary embodiments, those skilled in the art will readily appreciate that various changes and/or modifications can be made to the disclosure without departing from the spirit or scope of the disclosure as described herein.
The subject application claims the benefit of priority from U.S. Provisional Patent Application Ser. No. 61/824,538, filed May 17, 2013, the disclosure of which is hereby incorporated by reference herein in its entirety.
Number | Date | Country | |
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61824538 | May 2013 | US |