Swim simulator with breathing practice function
The invention is related to a swimming teaching apparatus which provides user to make a complete swimming like action on land. The special technical features are a body rotation mechanism, arms guide, a breathing sink and a kick pad for legs, all together to perform on land swimming exercise. All strokes can be skilled with a precise instruction by the coach when the user is stationary on the invention. The invention allows user to do continuous practice of the swimming movements without be interrupted by a breathing problem, when the arms and legs are well coordinated, breathing sink then add to exercise, user can do combined actions slowly to ensure the correctness. The invention is tried to substitute the buoyancy of water as a pre-training machine for those schools which have no swimming pools can still carry out swimming courses for their students to reduce drowning incidents.
1. Field of the Invention
The present invention relates to a machine that emulates strokes which including breathing exercises. The invention is to provide a platform for practice all strokes to familiarize students with the swimming skills.
2. Description of the Prior Art
All of the swimming lessons of schools are held in the swimming pools, for those schools which have no swimming pools, swimming courses must be held in another swimming pool outside their school, this is very inconvenient. In order to solve the problems of non-swimming pool schools, a swim simulator is invented.
Take freestyle for example, the arms should pass the underside of the lying body along the body center line from the front head to the back thigh, the body has to rotate to match the rhythm of breathing and arm cycles which includes palm enter, stretch, catch, pull, recovery to the front. In order to completely simulate the freestyle movements on land, the body needs to be supported from head to feet entirely, meanwhile, a space under the body must be reserved for arms to move, and also a body rotation mechanism is need for linking arm cycle and breathing.
A swimming simulator should allow the user to lie down on it comfortably just like floating on water, and let user learn swimming techniques on land like swimming in water.
How to do it?
My personal view is to have the following requirements.
- 1. It should have an adequate length of backward tilt board to support the whole lying body from head to tiptoes. (like buoyancy of water which support the whole body on water). The backward tilt board is to simulate the body is in an inclined downward position when swimming in water
- 2. It should have an arm and hand guide part. (to give user a precise route to familiar with the arm movement)
- 3. A body rotation part is necessary for freestyle and backstroke. (to simulate the body rotation movement of freestyle and backstroke and to facilitate breathing of freestyle)
- 4. It should have a space below the tilt board for arms to move just like swimming.
- 5. It should have a suitable pad for feet kicking. (for support the legs and feet do the similar motion as in swimming)
- 6. It should have a breathing part (to familiar with the complete swimming technique on land instead of go in water)
- The rhythm of swimming is the first things to be considered in develop the invention, in other words, familiar with swimming technique is more important than increase swimming muscle strength for beginners. User should practice arms and legs move in sequence without disorder.
According to the requirements of item 1, with adequate length of bench board to support the lie down body length is the basic elements of the invention, the user can practice swimming rhythm just as if the body floating in the water. The prior inventions which are missing or short of board to support the foot, user cannot kick freely with the straight foot and use the instep to kick on a surface; the hands and feet coordination cannot be done, either. This would include devices such as disclosed in U.S. Pat. No. 7,291,049 (James H. Davis), U.S. Pat. No. 6,790,164 (James Davis), U.S. Pat. No. 6,790,163 (Keith Van De Laarschot), U.S. Pat. No. 6,142,912 (John Profaci), U.S. Pat. No. 5,158,513 (Michael P. Reeves).
According to the requirements of item 2, the swimming arm cycle which includes open palm entry, open palm stretch, open palm catch, open palm pull and push, exiting the stroke with palm muscle relaxed with high elbow recovery. So the palms are always open during the arm cycle. Many of the prior inventions let hands grab handles, arm cranks or levers without open palms to practice swimming, because the muscles used for the palm grip and the palm open are different, it means grip something with a palm is not the same palm posture as swimming. This would include devices such as are disclosed in U.S. Pat. No. 7,585,256 (David Day Harbaugh, IV), U.S. Pat. No. 7,104,931 (Robert Marc Saul), U.S. Pat. No. 6,790,163 (Keith Van De Laarschot), U.S. Pat. No. 6,764,432 (Joseph B. Hippensteel), U.S. Pat. No. 6,764,431 (Mark Stuart Yoss), U.S. Pat. No. 5,158,513 (Michael P. Reeves), U.S. Pat. No. 4,422,463 (Harry C. Hopkins). U.S. Pat. No. 4,537,396 (Lindsay A. Hooper) have palms opened but tied on a flat paddle, however it still can't totally release their muscles for simulate recovery movement due to a string force kept doing on the arms, but the U.S. Pat. No. 4,537,396 (Lindsay A. Hooper) license date in 1985 Aug. 27 shows an important idea that by placing a paddle on a string handle is a better way to simulate the open palm condition of swimming. Another U.S. Pat. No. 5,354,251 (Robert H. Sleamaker) license date in 1994 Oct. 11 also shows the same usage of a paddle fastened on a string for swimming practice.
U.S. Pat. No. 5,391,129 (Viatcheslav K. Zaitsev) shows a pair of fixed traction elements which are curved surfaces from the side view, the arms are stretched without bend when move along the curved traction elements, It is very laborious if swim this way because the stretched arm produce bigger torque to the arms.
The U.S. Pat. No. 6,142,912 (John Profaci) license date in 2000 Nov. 7 shows a paddle assembly is installed on a hand track, the hand tracks is summarized as follows:
- 1. Hand track system includes a pair of hand tracks positioned on opposing sides of the table.
- 2. Hand track is contoured of a preset, yet adjustable path that replicates an “S-shaped” path below the body.
- 3. The paddles will rotate around the rails when move to the back.
- 4. Each hand track is comprised of a plurality of track sections. As we know from above mentioned U.S. Pat. No. 4,537,396 (Lindsay A. Hooper) license date in 1985 Aug. 27 and U.S. Pat. No. 5,354,251 (Robert H. Sleamaker) license date in 1994 Oct. 11 that the paddle had been used for swim simulator since then.
Today, however, swimmers use straight line arm stroke rather than the contoured, S-shaped” path stroke as can be seen in all swimming race and instructional videos, the reason is that the body and the arms should be looked as a whole, the contoured, S-shaped” path stroke is not a streamlined body shape because the lead arm stretch to the front but expand outwards will cause forward resistance and reduce the pushing effect of the other hand.
Another invention needs to be discussed is U.S. Pat. No. 6,409,634 (John Profaci), it has a straight hand track system and is summarized as follows:
- A. The hand track systems are joined by a cable.
- B. The cable is received by a pair of pulleys coupled with forward portions of the enclosure, for directing the cable between the hand track systems.
- C. The pulleys are coupled with the forward portions of the enclosure so that the cable is placed in an orientation which substantially parallels longitudinal axes defined by the hand track systems.
- D. The hand grip which is sliding received by the rail for movement along the longitudinal axis of the rail and for rotation about the longitudinal axis of the rail.
The item A are relation between cable and pulley, many of the prior art had already disclosed this knowledge, such as U.S. Pat. No. 2,716,027 (Fritz Henry Gehri) license date in 1955 Aug. 23, disclosed the same pulley-cable combination. U.S. Pat. No. 3,999,752 (Sam Kupperman) license date in 1976 Dec. 28 disclosed a pulley-cord with adjustable hand grips. U.S. Pat. No. 4,060,240 (Virgil M. Dunston) license date in 1977 Nov. 29, disclosed a design to adjust cord length of pulley-cord device. U.S. Pat. No. 4,948,119 (Richard T. Robertson, Jr) license date in 1990 Aug. 14, disclosed an independent resistance device (same as independent systems including return mechanism mention in U.S. Pat. No. 4,948,119) for simultaneous pulling movement use, so it is a well known knowledge of the usage of pulley and cable combination.
The item B shows the rail and the pulley are Installed separately.
The item C shows the pulleys installed in a higher position of the enclosure than the rails.
The item D states the slide sleeves will rotate on the rail.
The facts about the straight hand track of the U.S. Pat. No. 6,409,634 (John Profaci) is:
- 1. The paddle assembly will roll when sliding along a rail.
- 2. The paddle assembly keeps not rotated by a guiding board of the enclosure.
- 3. The cable is possible to derail from the pulleys because the rails are horizontally but not vertically installed, even if the pulleys are installed a little bit higher than the rails, as when the horizontal forces made by the user disappear, the cable is in a relaxed condition, and the gravity is not able to help the horizontal cable remain on the grooves of the pulleys.
- 4. The tracks and the pulleys are firmly fixed on the enclosure and are not intend to adjust for different users.
In order to satisfy our need, the rotatable hand grip will change to a not rotating paddle and further to solve the problem of derailment.
According to the requirements of item 3, a good body rotation mechanism is the one which only rotates the body (as shown in
- 1. The inverted pendulum movement (which is not a rotation motion but a swing motion) (as shown in
FIG. 15 ):- As long as there is a combination of a supporting board rotated by a shaft, no matter how the rotating shaft is under the supporting board or passes through the center of the supporting board, as the supporting board rotates around the shaft, the lying body on top of it is doing an inverted pendulum movement. It means the body center rotates around the rotating shaft but not itself, the body moves from left to right and from top to bottom. When the body tilts to one side form the highest middle point, the body center is below the highest middle point, it's laborious to against gravity and to make the body return to the highest middle point and then reach to the other side lower point, it takes strength to lift the center of gravity of the body for back and force swing. In actual experiment, once the body tilt to one side, many users failed to tilt the body back to the highest middle point, even if they did, it shows that the body and the head are in a continuous back and forth swing, this is not the expected motions we want as the fact that the head won't offset to the right or left when swim. If a sink is installed in front of it, the user's head will swing back and forth and cannot stay steady above the sink to practice breathing. The inverted pendulum movement is totally different from actual swimming body rotation and should not be adopted for an ideal body rotation mechanism. This would include devices such as disclosed in U.S. Pat. No. 7,601,103 (Her-Chun hen), U.S. Pat. No. 7,591,764 B2 (Brian Zuckerman), U.S. Pat. No. 6,790,164 (James Davis), U.S. Pat. No. 5,860,899 (William R. Rassman), U.S. Pat. No. 5,354,251 (Robert H. Sleamaker), U.S. Pat. No. 5,158,513 (Michael P. Reeves), U.S. Pat. No. 2,109,775 (Jesse B. Hudson).
- 2. The body rotation movement (as shown in
FIG. 7A ):- U.S. Pat. No. 2,109,775 (Jesse B. Hudson) license date in 1938 Mar. 1 has shown an arc shaped body support was adopted in swimming machine, nevertheless, this invention with arc shaped body support didn't promise a true body rotation effect because its underside part is a shaft and the shaft will pivot the arc shaped body support, therefore swing the above body, this invention shows the arc shaped body support had been used but cannot ensure a pure body rotation movement (as shown in
FIG. 15B ). - U.S. Pat. No. 5,429,564 (Michael P. Doane), license date in 1995 Jul. 4, U.S. Pat. No. 5,628,632 (Michael P. Doane), license date in 1997 May 13, U.S. Pat. No. 6,142,912 (John Profaci) license date in 2000 Jan. 7 are three nice approaches to body rotation mechanisms. The U.S. Pat. No. 5,628,632 (Michael P. Doane) is modified from U.S. Pat. No. 5,429,564 (Michael P. Doane), this two can be regarded as one. So only two of the above three inventions left for discussion.
- U.S. Pat. No. 2,109,775 (Jesse B. Hudson) license date in 1938 Mar. 1 has shown an arc shaped body support was adopted in swimming machine, nevertheless, this invention with arc shaped body support didn't promise a true body rotation effect because its underside part is a shaft and the shaft will pivot the arc shaped body support, therefore swing the above body, this invention shows the arc shaped body support had been used but cannot ensure a pure body rotation movement (as shown in
The body rotation features of the U.S. Pat. No. 5,628,632 (Michael P. Doane) is: (for easy to watch, we redraw a perspective illustration of the invention as shown in
- 1. It is a rolling rotation movement.
- 2. The bottom of the torso support has two curved tracks (called the crescent shaped support pieces) rest upon two pairs of rollers.
- 3. The rollers are grooved such that the curved tracks sit in the grooves of them to prevent the torso support from any forward or rearward movement.
- 4. Use springs or resilient bands serve to fix the torso support down to the rollers. The spring or resilient bands also help to pull the body from rolled down position back to the neutral position.
The body rotation features of the U.S. Pat. No. 6,142,912 (John Profaci) is:
- 1. It is a sliding rotation movement.
- 2. The lower frame and the above tray are coupled by bearing structures.
- 3. The lower frame is a curved surface base which is a sliding part.
- 4. The underside of the tray has curved races to engage the curved tracks on the frame and a channel of the frame for receiving a stop of the tray.
- 5. For purposes of safety, an elastic band attached to and extending between the tray and stationary portions of the table, for stabilizing the tray relative to frame or to bias the tray toward a neutral (centered) position.
The similarities between the above mentioned patents are:
- 1. Both have either projected or recessed tracks to guide the rotation. One is curved races of upper torso support to grooves of rollers and the other is curved races of tray to engage the curved tracks of frame.
- 2. Both of their contact interfaces of rotation, by side view, are not at the ends of the torso support or the tray.
- 3. Both have elastic band or resilient bands to stabilize the upper torso support or tray.
The reason why elastic band be used to secure the body rotation mechanism is because of the contact interfaces of rotation is in the middle section, the length of the two contact interface is shorter than the length of above torso support or tray, this is an unstable condition, when a force applied on the front edge or the rear edge of the torso support or the tray, a bending moment is formed to turn over the torso support or the tray, so the spring or resilient bands is to resist the bending moment. But the spring or resilient bands also limit the rotation effect of the torso support and the tray. We will abandon the use of the spring or resilient bands and be more stable by improved supporting structure.
According to the requirements of item 4, the overall dimensions of the body rotation mechanism should be as compact as possible and should not be too big to obstruct the arm movement under the body along the body center line.
The lower frame of the U.S. Pat. No. 6,142,912 (John Profaci) is a fixed rigid body, the dimensions of the lower frame won't change, when the above tray rotates from side to side, the lower frame is remain intact, the arm moves to the back will be restricted by the top edges of the lower frame, the arm is hardly to move along the body as we can see from the end elevation view that the unchanged lower frame stops the way. In fact this body rotation mechanism only provide a first half space for the arms, there is no enough room for arms pushing to the second half space under the body like swimming, forced the rails of the hand tracks be installed on the opposite sides of the table from its middle portion.
The lower part of the U.S. Pat. No. 5,628,632 (Michael P. Doane) is a single beam, because strings are used for the arms movement, no arms guide tried to install under the body rotation mechanism.
Another U.S. Pat. No. 7,291,049 (James H. Davis) has a different body rotation mechanism, but has the same problem that there is no space reserved for arms movement under the body.
According to the requirements of item 5, a suitable pad for legs is the one which has more downward sloping than the inclined board. The reason is when we kick in the water, our legs start near the water level and finish under the water with some depth, the position of the underwater leg is more downward sloping than the body line, so we installed an inclined pad on the second half of the inclined board for legs to kick with the foot straight as in swimming. My point of view is let the pad provide a space for the legs to kick freely and support them when not kick, guide the legs with any modules is not necessary because user can control the legs doing a simple up and down motion and they will not deviate. In fact, with foot straight and use the instep to kick the pad surface is the key point to be noticed and can promise forward propulsion be produced when in swimming.
The prior art about the lower body support are fall into the following categories:
- 1. Feet are guided or bounded so leg kick by the instep cannot be performed. This would include devices such as U.S. Pat. No. 7,104,931 (Robert Marc Saul), U.S. Pat. No. 5,707,320 (Huei-Nan Yu), U.S. Pat. No. 5,376,060 (John J. Murray), U.S. Pat. No. 5,366,426 (James P. Glavin), U.S. Pat. No. 5,282,748 (Oscar L. Little), U.S. Pat. No. 5,158,513 (Michael P. Reeves), U.S. Pat. No. 4,830,363 (Robert J. Kennedy).
- 2. The whole support pad doesn't bend from the middle. They are flat surface to support the user from head to foot, be horizontal or tilted placed, but there is no bending downwards since the middle point of the support for legs to kick like swim. This would include devices such as U.S. Pat. No. 7,585,256 (David Day Harbaugh), U.S. Pat. No. 7,044,818 (Craig Askins), U.S. Pat. No. 6,790,163 (Keith Van De Laarschot), U.S. Pat. No. 6,409,634 (John Profaci),
The U.S. Pat. No. 5,628,632 (Michael P. Doane) illustrates its font torso support is sloped upward from the horizontal hip support; this is contrary to my concept. If we observe the swim posture of freestyle under water, we can find the legs are kicking downward relative to the body which is in the level.
According to the requirements of item 6, a breathing sink appeared for the first time could be added as a useful tool for a complete practice of swimming on land, allows user concentrate on breathing practice and will not be as nervous in the water.
SUMMARY OF THE INVENTIONThe design of the swimming machine is very subjective, inventors build it by their personal perception of swimming, and I always compare the swimming profile on my invention to my swimming posture in the water, try to make then consistent. A view of an embodiment of freestyle of the invention is shown in
The first thing is to support the full body from head to foot toe like float on water. The head position is a little higher than the foot when swimming, so I use an elongated and inclined board to support the body on land to simulate the floating on the water.
The arm and hand guide is necessary part which can guide the user to familiar with the arm and hand posture by self practice and reduce the burden of the coach. Our arm and hand guide module use two linear motion systems (or hanging roller and hanging track) as straight line motion guidance which are readily available commodities for any linear motion to use, each has a slide block on the rail and the sliding block can carry thing to sliding on the rail (or has a hanging roller which can also carry thing and sliding inside the track). First install a paddle on each of the slide block, then install a pulley which has outer casing directly on each of the front end of the rail, so each of the pulley is in combination with the rail and integrated as one, connect the two slide blocks with a inelastic rope pass through the two pulleys, an arm and hand guide module is assembled and ready for use. It is an independent module which can be moved to any desired position to operate, the rail prohibits the slide block to rotate and makes only linear motion, the slide block won′ t touch the flat bottom surface of the rail so the rail can be placed on any flat surface to operate the module, the paddle locked on the top of the slide block is always fixed in a upright position and won′ t rotate because the slide block won′ t rotate, the rope which connect the two paddles will not derail from the pulleys' grooves in any case because there are casings encase each of the pulleys, so the cable is always restricted inside the space created by the casing and the pulley groove, the system is completely independent, as shown in
The arms and hand guide module is a straight track with a locked, not rotating paddle rather than the U.S. Pat. No. 6,142,912 (John Profaci) using the contoured, S-shaped tracks with rotatable paddle assembly, the reasons are as follows:
- 1. In my personal point of view, the straight arm path stroke is consistent with the trend of modern swimming technique. Straight tracks positioned under and parallel to the body center line can guide the user to maintain streamlined body shape. If we watched the 2012 London Olympics' underwater camera you will see the swimmers drop their arm immediately rather than taking the long route of the S-shape. Dropping your arm results in more direct propulsion force to the back rather than making an S-shape movement that will disperse rearward force.
- 2. The S shape stroke is always right if you look at a freestyler's hand from outside bystanders, as it is a combined motion of body rotation and hand pull. But from the freestyler's own perspective, it is always not necessary to imitate the S-shape pull by hand because combine the contoured, S-shaped path stroke together with body rotation but will distort the forward motion.
The arm and hand guide module give the user a good guideline to do the pull and push of the arm stroke, but the arm is in a horizontal straightening posture before pull the paddle back. When in practice, a horizontal hand stay is used to attract the arm straight forward and hold the arm on the horizon. The horizontal hand stay is a plate with telescopic rods installed on the forefront of the inclined board ahead of the user's head. It is retractable and can guide the arm straight to front and make the arm remains horizontal. Conjunction use of the arm and hand guide module and the horizontal hand stay, as shown in
The most distinctive difference with the other inventions is a breathing sink be installed on the forefront gap of the inclined board for breathing practice. No patent reports about breathing sink have ever been found in swim simulator categories. The breathing sink is packed into the front support frame which is the surrounding of the forefront gap of the inclined board. Several blocking things surround the support frame are used to secure the breathing sink. It is better to use a transparent sink for eyes to see far because we don't like our sight be blocked by a very closed article such as the inclined board, by seeing through the transparent breathing sink and the forefront gap of the inclined board, the user can as seen in the swimming pool water. Even if practice swimming on the land, the breathing sink with water inside gives the user a similar scene like swimming pool. With the emergence of the breathing sink, user can practice the complete swimming skills with breathing on land before entering the water. It is very excited for the user to go to the swimming pool to check if he has learned to swim with on land practice.
For freestyle, the breathing sink must be work with a body rotation mechanism to perform the breathing movement otherwise we have to turn our heads alone for getting a breath. The neck will hurt with such turn. Breathing for people tends to be the hardest concept to get while putting together the whole strokes. It is why the invention intend to build a breathing sink on the inclined board to practice breathing together with the arms and legs movements. Users may in an unhurried way to practice swimming. But a sink only cannot perform freestyle breathing movement because our body needs to roll from side to side when we breathe; our heads are actually rolled when the body rolls, to get that breath. Since breathing is to rotate the body and the head together, breathing need to turn the head about 90 degrees (from face down direction to face right or face left directions) to get a breath, with the help of a body rotation mechanism, rotate the body for 45 degrees first, for example, then turn the head for the rest 45 degrees to get a breathe. Thus a simulator with good body rotation mechanism is necessary to assist the freestyle breathing be achieved.
For body rotation mechanism, to solve the bending moment problem and the stable problem of the prior arts, we use an arc panel (or called curved plate) for a contact surface for rotation instead of the crescent shaped support pieces of the U.S. Pat. No. 5,628,632 (Michael P. Doane) and the curved races of the tray of the U.S. Pat. No. 6,142,912 (John Profaci), thus the narrow area of the races or tracks for rotation is substituted by a large piece of curved surface; the whole convex surface of the arc panel is a surface for contact and rotation. Next, support the arc panel with at least two cylindrical conveyor rollers to replace the small contact interfaces of the grooved rollers of the U.S. Pat. No. 5,628,632 (Michael P. Doane) and the small contact interfaces of the channel on the frame of the U.S. Pat. No. 6,142,912 (John Profaci), therefore, the new supporting region covers the whole upper body of the user. The cylindrical conveyor rollers holds the arc panel and drives the arc panel to rotate, as shown in
In the prior art, in order to fasten or stabilize the torso support or the tray, the elastic band are used. However, the elastic band become a brake of these mechanisms, it means the more angle you rotate your body, the longer the elastic band stretched, and the more efforts you have to pay, the resistance of the elastic band will cause the user to spent more effort to rotate the body, this is contrary to the body rotation of swimming, when we swim in water, the bodies rotate effortlessly, a body rotation mechanism should be rotate freely without the binding force (the elastic band is one of the binding force) and can drive the body to rotate effortlessly, so the prior inventions with elastic band design didn't satisfy our expectation of body rotation mechanism.
When the axial torque and lateral stability problems of the prior art are resolved by an example of conjunction use of the arc panel (or curved plate) and the conveyor rollers, a new problem arise: will the rotation center of the body match the rotation center of the arc panel naturally? The answer is no. There are three rotation conditions for the arc panel.
First, an inverted pendulum motion caused by the rotation center of the body is higher than the rotation center of the arc panel, as shown in
Second, a true body rotation motion caused by the rotation center of the body is the same height as the rotation center of the arc panel. This condition is achieved by using a proper thickness of pad to elevate the body's center to match the rotation center of the arc panel, as shown in
Third, a pendulum motion caused by the rotation center of the body is lower than the rotation center of the arc panel. This condition is achieved by let the body lying directly inside the arc panel with no pad or with less pad, as shown in
To sum up, an apropos arc panel for user means the arc panel is bigger enough to hold the body's chest, but not too wide to obstruct the arms movement. When pad properly, the two centers overlap and is good for freestyle use. When there is no pad or less pad inside the arc panel, the rotation center of the body is below the rotation center of the arc panel, a pendulum motion formed (as shown in
For breaststroke and butterfly, the body don't rotate, the body rotation mechanism is not necessary, a not rotating regular torso pad is enough for them, as shown in
For backstroke, breathing sink is unnecessary, a pillow is instead for support the face up head, the body rotation mechanism is needed for face up body rotation practice, as shown in
Legs provide several functions for swimming, some of which directly aid the propulsion, some of which lift the body, some of which balance the arm. So it is necessary to have a surface to provide legs performing above multi-functions for leg kicking practice. So the leg support should slope downward from the longitudinal body line.
The inclined kicking pad of my invention is an inclined surface pad which has a downward inclined surface relative to the to the inclined board surface, as shown in
With proper combination of the above mentioned special technical features, swim simulators for different strokes are assembled as follows:
A swim simulator for freestyle includes (as shown in
an inclined board with an opening at the forefront,
a breathing sink,
a body rotation mechanism,
an inclined kicking pad,
a horizontal hand stay and
an arm and hand guide module which is suspended under the inclined board and the connecting rope of the two tracks is an inelastic one to perform alternating movement of the two paddles.
A swim simulator for backstroke includes (as shown in
an inclined board,
a pillow,
a body rotation mechanism,
an inclined kicking pad and
an arm and hand guide module which is support or suspended with independent level supports beside the inclined board and the connecting rope of the two tracks is an inelastic one to perform alternating movement of the two paddles.
A swim simulator for butterfly includes (as shown in
an inclined board with an opening at the forefront,
a breathing sink,
a not rotating regular torso pad,
an inclined kicking pad,
a horizontal hand stay and
an arm and hand guide module which is suspended under the inclined board which the connecting rope is an elastic one to perform synchronized motion of the two paddles.
The swim simulators of butterfly and freestyle have lot in common, we can use the swim simulator of freestyle to practice butterfly just put the inelastic connecting rope into an elastic one, allow the two paddles do the synchronized motion like the arm stroke of butterfly. But on the other hand, without the body rotation mechanism, the swim simulator of butterfly is not suitable be used for freestyle practice.
A swim simulator for breaststroke includes (as shown in
an inclined board with an opening at the forefront,
a breathing sink,
a not rotating regular torso pad,
a specialized breaststroke kicking pad which has cross section of trapezoid or semicircle.
a horizontal hand stay and
an arm and hand guide module which is suspended under the inclined board which the connecting rope is an elastic one to perform synchronized action of the two paddles.
A simplified swim simulator with minimum elements of the above combinations is a board with the body rotation mechanism plus a pad for legs is enough for practice swimming on land, as shown in
The present invention allow user to do the same swimming movements such as freestyle, backstroke, buttery and breaststroke, furthermore, even swimming breathing can be practiced together with. The present invention comprises the adequate lengths of inclined board to support the whole body. The first appeared swimming breathing sink has achieved breathing on land. The body rotation mechanism not only makes rotation for the body but also reserves space for the arms to move under the body. The inclined kicking pad is a surface for legs to kick and allow the legs to coordinate with arms and breathing. The breaststroke trapezoidal column pad especially for breaststroke kicks practice. The straight line arm and hand guide module works with the horizontal hand stay to practice the complete arm movement, all together achieve the goal of simulating swimming on land. Our theory is, once you can do the right swimming technique on land, you can learn to swim very soon. The theory has been confirmed to be true by an experiment of a six year old not swim boy who had practiced swimming with the invention for four times within two weeks, then try a test swim in the water, reached for 20 meters with breathings.
The object of the present invention is to provide a swim simulator which can practice a complete swimming movement on land which includes breathing.
It is thus an object of the present invention to provide those schools which have no swimming pools a new tool and method to teach swimming by using the swim simulator on land.
It is thus an object of the present invention to substitute the swimming pool as the only mean for swimming teaching and learning place, allowing coaches to demonstrate swimming technique and correct the students' swimming movement on land.
Another object of the present invention is to create a body rotation mechanism for simulating the body rotation effect of freestyle and backstroke on land by use of the arc panel and underside rolling elements.
Another object of the present invention guides the user to become familiar with the arm cycle by use of the combination of the arm and hand guide module and the horizontal hand stay.
Another object of the present invention is to provide a linear motion arm and hand guide module to guide the user's arms to do swimming stroke along the sides of the shoulders for backstroke.
Another object of the present invention is to provide a quick release arm and hand guide module which can be assembled and disassembled quickly from freestyle use to backstroke use.
Another object of the present invention is to provide an inclined kicking pad which gives legs and feet a surface to rest and to practice legs kick with insteps.
Another object of the present invention is to provide a specialized breaststroke kicking pad which is a trapezoid column pad, gives straight legs a narrow surface to rest and retract the legs along the two bevel edges of the trapezoidal column to practice legs kicking of breaststroke.
Advantageously, the present invention allows user to practice a joint motion of arms, legs and breathing, all work together, with a slow or even paused pose to check each action is correct or not, user may completely ignore the buoyancy problem which will be faced when practice in water because the inclined board always support the body and the user doesn't has to hold his breath to practice arms and legs joint movements.
The same reference numerals refer to the same parts throughout the various Figures.
DETAILED DESCRIPTION OF THE INVENTIONAbove the forefront opening 11 is installed a swimming breathing sink kit 3 which is fixed in position by numbers of blocking things 31 surround the forefront opening 11. These blocking things 31 can prevent the swimming breathing sink kit 3 from dumping.
An example of body rotation mechanism 4 is shown in
We reserved some space between the cylindrical conveyor rollers 45 and the sides' edge of the inclined board 1 for installing an anti-slip armrest 9 on both sides of the inclined board 1 as shown in
The head of the user will keep in its original position when the body rotates with this body rotation mechanism 4. Several symmetrical high and low adjusting holes 42 are drilled on the sides of the arc panel 41, as shown in
An inclined kicking pad 5 installed immediately after the body rotation mechanism 4.
An arm and hand guide module 6 is a guidance of all strokes, for freestyle, it is suspended by brackets 61 under the inclined board 1. We use the linear motion systems which are mature and readily available commodities as the straight-line gliding mechanism. It is consist of a track 62 to guide a hanging roller 63 or a rail 64 to guide a sliding block 65, as shown in
A horizontal hand stays 7 is consist of two parts, a set of telescopic rails 71 and a palm-rest plate 72, as shown in
An elastic mark rod 8 is fixed on two opposite sides of the inclined board 1 adjacent to the sink 3 as shown in
An anti-slip armrest 9 is installed on two opposite sides of the inclined board 1 adjacent to the body rotation mechanism 4 as shown in
For backstroke, the swimming breathing sink 3 is replaced by a pillow 34 for supporting the head and the horizontal hand stays 7 is not needed. The arms stroke of the backstroke are along the sides of the body, unlike the arms are under the body of freestyle, so the two tracks 62 of the arm and hand guide module 6 is moved to positions parallel to and with a distance outside the inclined board 1. Three embodiments are shown here, one is the arm and hand guide module 6 be placed beside the inclined board 1 and the paddles 66 position are below the body level, as shown in
The other embodiment is to install four adjustable suspension brackets 102 on the underside of the inclined board 1 as shown in
For butterfly, as shown in
For breaststroke, all parts are the same as used in freestyle except the following three, the body rotation mechanism 4, the arm and hand guide module 6 and the inclined kicking pad 5. The body rotation mechanism 4 could be replaced by a not rotating regular torso pad 49 for avoiding the rear edge of the arc panel 41 of the body rotation mechanism 4 obstruct the legs retraction movement to the front as shown in
-
- 1. inclined board
- 11. forefront opening
- 2. descending straight line arranged supporting legs
- 21. the shortest supporting leg
- 22. the longer supporting leg
- 23. the longest supporting leg
- 24. adjustable supporting leg
- 25. hinge
- 3. swimming breathing sink
- 31. blocking things
- 32. transparent sink
- 33. mirror
- 34. pillow
- 4. body rotation mechanism
- 41. arc panel
- 42. adjusting hole
- 43. adjusting bolt
- 44. underside rolling support parts
- 441. base plate
- 45. conveyor roller
- 46. locating tab
- 47. semicircular column pad
- 48. rolling barrier component
- 49. not rotating regular torso pad
- 5. inclined kicking pad
- 51. specialized breaststroke kicking pad
- 6. arm and hand guide module
- 61. bracket
- 62. track
- 63. hanging roller
- 64. rail
- 65. sliding block
- 66. paddle
- 67. shell pulley
- 68. inelastic connecting rope
- 69. elastic connecting rope
- 7. horizontal hand stay
- 71. telescopic rail
- 72. palm rest plate
- 8. elastic mark rod
- 9. anti-slip armrest
- 10. level stand
- 101. invert suspension bracket
- 102. adjustable suspension bracket
Claims
1. An apparatus for practice the freestyle and backstroke by a user on land, comprising:
- a high to low inclined board for supporting the user's full body length which has a forefront opening.
- On the upper surface of the inclined board, successively installed, from front to back are:
- a horizontal hand stay,
- a swimming breathing sink,
- an upper body rotation mechanism,
- a lower body supporting pad, and
- an arm and hand guide module.
2. The apparatus of claim 1 wherein the inclined board is an downward inclined surface from front to back, by using several decreasing length of inverted T-shaped bench legs for supporting the inclined board.
3. The apparatus of claim 1 wherein the horizontal hand stay consists of a set of telescopic rails and a palm rest plate installed horizontally at the forefront of the inclined board so that the palm rest plate is adjustable in length and may lead the arm keeping straight and horizontal, helping the hand reducing ahead resistance and waiting for starting the next arm cycle movement of swimming.
4. The apparatus of claim 1 wherein the arm and hand guide module comprises a pair of linear motion systems fitted with paddles and shell pulleys. Each linear motion system comprises a sliding element and a guide rail, a paddle is fixed on top of the sliding element and a shell pulley is installed at the front end of the guide rail, an inelastic rope passes through the two shell pulleys and connects to the two sliding elements. The two paddles are tracked with each other and guide the arms and hands doing an alternating back and forth swimming movement.
5. For freestyle, the apparatus of claim 4 wherein the arm and hand guide module are installed under the inclined board.
6. For backstroke, the apparatus of claim 4 wherein the arm and hand guide module are supported by separate level stands or invert suspended by separate inverted suspension brackets outside the inclined board and parallel to the longitudinal center line of the inclined board, the inelastic rope is longer than the one used in freestyle for a wider arrangement of the two guide rails.
7. The apparatus of claim 1 wherein the swimming breathing sink is secured above the inclined board's forefront opening by blocking things and provide the user a chance to practice swimming breathing on land while he can see through the forefront opening from the breathing sink water for a good vision just like swimming.
8. For backstroke, the apparatus of claim 1 wherein the swimming breathing sink is no longer needed and is replaced with a pillow for support the face up head.
9. The apparatus of claim 1 wherein the body rotation mechanism is a mutual rolling system, comprising two parts, the above part for rotating the body of a user and the under part for rotating the above part, both of the two will rotate around their own rotation centers when move together.
10. The apparatus of claim 9 wherein the above part comprises an arc panel and a detachable column pad joined in its concave surface for supporting and rotating the user's body.
11. The apparatus of claim 9 wherein the under part comprises a combination of all kinds of itself can be rolled elements, fixed on a base frame to form an arc support surface for supporting the above arc panel and rotating the above arc panel.
12. The apparatus of claim 10 wherein the arc panel which further includes blocking things Protruding from the holes of the arc panel's both transverse sides and can be blocked by the under part to get the desired rotation angle and avoid the arc panel from oversetting.
13. The apparatus of claim 9 wherein a rolling barrier component is fixed immediately after the body rotation mechanism and is in contact with the back edge of the arc panel to avoid the arc panel backward sliding and can guide the arc penal to roll side to side smoothly.
14. The apparatus of claim 1 wherein the lower body supporting pad is a kick pad with a inclined surface which has a further downward inclined angle according to the inclined board surface for the legs to do alternating kick with instep flat on the pad surface.
15. An apparatus for practice the butterfly and breaststroke by a user on land, comprising:
- a high to low inclined board for supporting the user's full body length which has a forefront opening as in claim 1.
- On the upper surface of the inclined board, successively installed, from front to back are:
- a horizontal hand stay as in claim 1,
- a swimming breathing sink as in claim 1,
- a not rotating regular torso pad for supporting the upper body
- a lower body supporting pad, and
- an arm and hand guide module as in claim 1.
16. For the butterfly legs kick, the apparatus of claim 15 wherein the lower body supporting pad is the same as in claim 1.
17. For the breaststroke legs kick practice, the apparatus of claim 15 wherein the lower body supporting pad is a pad with a larger surface area on bottom gradually converge to a smaller surface area on top which allows both legs retract to the front along the pad's sides and let straight and closed legs to stay on top of the smaller area after kick.
18. The apparatus of claim 15 wherein the arm and hand guide module is the same as in claim. 1 except the connecting rope is replaced with an elastic one to make the two paddles doing a synchronized motion and is installed under the inclined board.
19. For simplified training for freestyle and backstroke, an apparatus for practice the basic coordination of arms and hands of swimming with the body rotation mechanism by a user on land, comprising:
- a board with inverted T shaped legs for supporting the user's full body length.
- an upper body rotation mechanism as in claim 1 installed on the top surface of the board.
Type: Application
Filed: Apr 23, 2013
Publication Date: Oct 23, 2014
Inventor: Tzu-Jan Tsai (Taipei)
Application Number: 13/868,324