Патент USA US3096540код для вставки
July 9, 1963 L. E. ALMGREN 3,096,530 WATER SKIS Filed Oct. 12. 1960 3 Sheets-Sheet 1 INVENTOR. .1was Z.’19/777 702 , 94322725; July 9, 1963 L, E. ALMGREN 3,096,530 WATER SKIS Filed Oct. 12. 1960 5 Sheets-Sheet 2 w \h.mw\w\m wgYMi\_ My mmm; . \_Wm.nHFL-f. INVENTOR. [02125 FY27 BY #5072765; u July 9, 1963 L. E‘ ALMGREN 3,096,530 WATER sxzs Filed Oct. 12. 1960 s Sheets-Sheet a IN VEN TOR. fowl-5E)?!” r272, 822% ‘ $041416 ?ZZZrneg. United States Patent 0 2 1 Another object is the provision of a plurality 'of mod i?cations of the invention which are easily attachable to ‘or detachable from existing skis so that the advantages 3,096,530 a 7 WATER SKIS Louis E. Almgren, 1928 Rutherford Ave., Chicago 35, Ill. Filed Oct. 12, 1960, Ser. No. 62,248 10 Claims. (Cl. 9-310) 3,096,530 Patented July 9, 1963 of the invention may be realized by the owners of existing skis which are not so equipped. The present application is a continuation-in-part of ,my prior application on Water Skis, ?led September 19, The present invention relates to water skis, and is par 1960, Ser. No. 56,715, now abandoned. . Other objects and advantages of the invention will be skis adapted to be held and maintained by the user in the 10 apparent from the following description and the accom panying drawings, in which similar characters of refer best position for take-off with a minimum amount of ef ence indicate similar parts throughout the several views. fort or skill. Referring to the three sheets of drawings, Various methods of take-off with water skis are prac FIG. 1 is a diagrammatic illustration showing one of ticed by different users, depending upon the point of take off; but the best point of take-off is in fairly deep water; 15 the best positions which may be taken by a user for be ginning the take-oif with the present skis, utilizing a pair and this is also the most frequent point from which take of skis of the present construction and a life saving jacket; off is made on water skis because water skiers often take FIG. 2 is a top plan vview of a water ski embodying a spill in the deeper water, where it is necessary to start off my invention; again. FIG. 3 is a side elevational view in partial section; The proper position for such a take-off is with the feet 20 FIG. 4 is a sectional view taken on the plane of the and skis well spread for better stability and with the skis line 4-4 of FIG. 3, looking in the direction of the ar held at an angle which is diagonal to the surface of the ticularly concerned with the provision of improved water water so that a pull on the skier will cause the skis to rows; rise to the surface into skiing position. It is di?icult to hold the skis in this starting position, FIG. 5 is a sectional view, taken on the plane of the line 5-5 of 1FIG. 3, looking in the direction of the ar especially for the novice or beginner or in rough water; and it is dif?cult to maintain the proper position while rows; the driver of the towing boat is getting ready to start or \ 1FIG. 6 is a sectional view, taken on the plane of the line 6-6 of FIG. 3, looking in the direction of the ar rows; build up speed. When the skier ?nds one ski dropping FIG. 7 is a view similar to FIG. 2 of a modi?cation in below the other and when he tries to raise that ski, the 30 ‘which the ski is provided with a readily attachable uni torque exerted on his body reacts on the position of the tary ?otation body which is located rearwardly of the other ski; and frequently a good take-off depends on exact front end of the ski and which may be of minimum size; timing, as the skier must reach the best position for take FIG. 8 is a side elevational view of the ski of FIG. 7; off at the same time the towing boat begins to build up FIG. 9 is a fragmentary top plan view of another speed, which causes the water to exert a pressure on the 35 modi?cation in which the ski is provided with a readily bottom of the ski. attachable ?otation member which may be in the form One of the objects of the invention is the provision of improved water skis, the structure of which is adapted to of a block of‘balsa wood, cork, polyethylene foam, or speed with a minimum amount of difficulty, Another object of the invention is the provision of im proved water skis which make it easier for beginners and 9 in partial section; with the skis of the prior art. Another object of the invention is the provision of FIG. 11; ‘FIG. 13 is another fragmentary top plan view of the other light material, detachably secured to the ski by a enable the skier to assume an optimum position for take off in the water and to maintain such a position while 40 plurality of screw bolts; FIG. 10 is a fragmentary side elevational view of FIG. waiting for the towing boat to start up and build up FIG. 11 is a fragmentary top plan view of another streamlined form of ?otation body which may be made skiers of moderate skill, as well as those who are most 45 of any of the materials just mentioned, and which is , quickly attachable to existing skis; skillful, .to get in the best position for take-off and to FIG. 12 is a fragmentary side elevational view of maintain that position with greater ease and facility than improved skis which are easier to ‘?nd in the water after 50 front end of a ski provided with a minimum size stream lined ?otation body, which may be made of light wood, a ski has become lost by becoming detached from the foot balsa wood, cork, polystyrene foam, or similar material, , which is quickly attachable to a ski; Another object of the invention is the provision of an FIG. 14 is a fragmentary side elevational view of improved ski structure provided with a buoyant cham ber located at the forward end of each ski above the body 55 FIG. 13; FIG. 15 is a fragmentary top plan view of another of the ski and immediately behind the curved forward end ski having a ‘?otation body which is detachably secured, so that the buoyancy takes effect at the front end of the of the skier. ski. Another object of the invention is the provision of a ski having such a buoyant chamber which is simple in construction, has a minimum number of parts, is adapted to be manufactured at a low cost, and which may be con structed of the same materials as are now used in various and which may be shaped in imitation of a seal or any other desired artistic shape; 15FIG. 16 is a fragmentary side elevational view of FIG. FIG. 17 is a fragmentary view in perspective of a por tion of a ski having a short ?otation body in the form of a block, which is located rearwardly of the front end and just Another object of the invention is the provision of im 65 in front of the foot fastening, where it is secured by a ?ex different types of ski structures. proved skis which may serve as safety devices for use as a‘ life saving body by anyone needing such support in , the water. ible band having a buckle; ‘ FIG. 18 is va similar view of another modi?cation in which a ?otation block is secured by means of stirrups and Another object of the invention is the provision of an a pair of ?exible straps having buckles. improved shape for water skis, the parts of which are 70 Referring to FIG. 1, this is a diagrammatic illustration streamlined and suitably curved so that there are no sharp of a new combination of elements including my improved projections which might cause injury to users. 3,096,530 3 skis in which the user 10 is provided with any suitable form of life preserver jacket 11 and a pair of my skis 12, 13, hav ing buoyant chambers 14, 15 toward the front end of the skis. These chambers are preferably located as far forward as possible; and this portion of the skis may be colored or decorated in such manner that they are more readily vis ible when a ski has been lost and is ?oating in the Water. Ordinarily water skis are so made that they ?oat; but as they ?oat level or nearly level in the water, they are prac tically submerged and hard to see, whereas my water skis will ?oat with the front end upward, as the buoyant cham bers tend to ?ll that end of the ski above the water, while the other end extends downward, when the ski is made of aluminum or “Fiberglas,” heavier than water. When the ski is made of wood, only the ?oat projects above the horizontally ?oating ski in the water. Each ski may be constructed with the usual components; and the ski has a ?at body 16 with an upwardly turned end 17, terminating at a rounded point 18. Tile rear end of the ski is preferably rounded at 19; and it may be pro vided with a metallic aluminum ?n 20 having a central at taching ?ange 21, which is secured to the bottom of the body 16 by bolts or rivets 22. The ski is preferably provided with suitable foot receiv ing means or harness for engagement with the feet of the user; and this may comprise a forward U-shaped soft, 4 may also be made out of Fiberglas or any of the materials now used for making water skis. _ Referring to FIGS. 7 and 8, these are views showing a modi?cation of the invention in which the ski 41 is pro vided with a readily attachable and detachable buoyant member 42 located just rearwardly of the front end 18 of the ski, since it has been found that this is a suitable and effective location for a buoyant member of smaller size. The upward projection of member 42 is less than the upward projection of the forward end 18 of the ski (FIG. 8) whereby the member does not interfere with the normal travel of the ski through water when in use. In the embodiment of FIGS. 1-6, where the top of the ski is provided with a buoyant unit extending to the front tip of the ski, much of this buoyant unit is actually lo cated above the water, indicating that it may be larger than absolutely necessary for use in facilitating the easy take-off. Also, there are thousands of skis already in use, to which such a buoyant unit may be applied if it is con structed as a separate accessory to be attached to present skis. Thus the modi?cation of FIGS. 7 and 8 may consist of a molded plastic or drawn metal upper wall 43 made of aluminum or any suitable plastic, and having a border ?ange 44 which may be secured to a lower wall member 45 with an intermediate gasket, or may be cemented or welded in such manner as to form a closed chamber 46. resilient, ?exible rubber member 22 having attaching The lower wall ?ts the contour of the ski where it is to ?anges 23, which are clamped to the ski by a pair of metal be attached; and it may be secured to the ski by a plu strips 24, 25 secured by through rivets 26, which extend 30 rality of wood screws or bolts 47, provided they are ar through the rubber and through the ski body, but are lo cated ?ush or below the surface on the lower side of the ranged in such manner that there are no projections on the bottom of the ski. The buoyant unit 42 may be molded out of rubber and may be secured by waterproof glue or adhesive to any ward the toe of the user and has its largest opening at the 35 type of existing ski. In the event it is made of metal, the rear end 28 over the instep and a smaller opening 29 at lower wall may be Welded, brazed or riveted to the top the front end for the toes. wall; and if desired, it may be empty and ?lled with air The foot of the user is held in the U-shaped member 27 or it may have a ?lling of “Styrofoam” or other buoyant by a rear molded rubber member 30 of resilient, ?exible plastic foam. rubber having an attaching ?ange which is secured to the 40 Referring to FIGS. 9 and 10, this is a modi?cation in metal base plate 31 by a plurality of rivets 32 passing which a self-contained rectangular block 48 of balsa, cork, ski. The U-shaped rubber member 27 tapers downward to through the base plate through the rubber attaching ?ange and through a curved top plate 33. > The heel securing member 30 slopes forward toward its top so that it overhangs the heel and has a U-shaped formation 34, open at the top, engaging above the heel. The base plate 31 is preferably rectangular in form, but has a U-shaped opening 34 around the heel; and it is provided with a pair of lateral slots 35 receiving a pair or light Wood is secured to the top of the ski 49 in front of the foot fastenings, but rearwardly of the front end 18. Such a buoyant block may be made also of plastic foam, such as “Styrofoam”; and it may be solid or hol low, or made of non-buoyant materials when it is hollow and ?lled with air or gas. It may be attached to the ski by having through bolts 50, the heads 51 of which are countersunk in the bottom of screw bolts 36, which are threaded into nuts located 50 of the ski; and the bolts may pass through bores 52 in the ?ush with the lower surface of the ski so that the heel block 48 and may be provided with washers 53 and wing member may be adjusted forward and backward and clamped in position to secure the ski on the foot of the user. nuts 54, clamping the buoyant unit to the ski. Referring to FIGS. 11 and 12, these are views of an other modi?cation in which a stream-lined buoyant body 55 of buoyant balsa, cork, light wood, or plastic foam The buoyant chambers 14, 15 may be identical and they are located, as shown, between the foot harness for is shaped to ?t the top of the ski 56 and secured to the ward portion 22 and the rounded point 18 of the ski. The ski by a plurality of screw bolts 57 provided with washers chambers may consist of an upper wall 37, which is and wing nuts 58, thereby providing an assembly which stream-lined to substantially U-shape, as shown in FIG. 4, can be attached to any existing ski. and tapered backward to become shallower at 38, near its 60 Referring to FIGS. 13 and 14, in this modi?cation the rear end; and the lower edges 39, 40 of the wall 37 are buoyant unit 59 is stream-lined and made of minimum shaped to abut against the top of the ski, which they ?t, thickness to provide the necessary amount of buoyancy. and with which they form the buoyant chamber 14 that It is located rearwardly of the curved end 18 to eliminate is ?lled with air. In some embodiments of the invention the necessity for shaping the buoyant unit to ?t the curved the buoyant chamber may be ?lled with plastic foam. end of the ski; and it is secured by a plurality of bolts 60 having wing nuts ‘61. The edges 39, 40 are secured to the top of the ski by Referring to FIGS. 15 and 16, in this embodiment the waterproof cement; and when made of wood, the entire buoyant member 62 simulates the shape of a seal; but it ski is primed and coated with waterproof varnish so that may be varied in its design to simulate any animal, ?sh, it will not absorb water and will not become water-logged. or bird, and may be attached to the ski by a plurality of I desire it to be understood that the illustration of the wood screws 63 screwed into the wood of the ski, but ski construction is merely exemplary of one type; and the not penetrating to the bottom of the ski. ski may be made of light metals, such as aluminum, in Referring to FIG. 17, in this modi?cation a minimum which case the wall 37 would be secured by suitable bolts size ?otation unit 64 comprises a hollow metal or plastic and a gasket to insure an air-tight construction. The skis 7 box ?lled with air or plastic foam, or it may consist of 3,096,530 a block of balsa, cork, or plastic foam secured to the top of the ski by a fabric strap 65 having buckle 66; and the strap may pass through a suitable aperture 67 located in the ski and extending from edge to edge above the bot tom of the ski. , Referring to FIG. 18,_ this is a modi?cation in which a similar block 64 is secured by straps 68 which are car and quickly attachable means for securing said ?otation member to the top of the ski. 3. A water ski having an elongated body and an up wardly turned front end, the said ski having its bottom substantially plane and having its upper side provided with a ?otation member only at its front end and having foot engaging means on its upper side between the ends of the ski in the proper location to support a skier, said ski assuming a position diagonal to the water surface with by wood screws 70 to the top of the ski. front end projecting upward out of the water when Any of the buoyant units mentioned may be stamped 10 its supported on the foot of the skier, due to the downward out of thin steel, brass, copper, plastic, Fiberglas, rub pressure on the ski by the foot .of the skier at the foot ber, or any suitable material. engaging means behind the ?otation member, which It will thus be observed that the present invention is ?otation member holds the front end of the ski upper equally adaptable to existing skis, which may be equipped most at this time with the front end of the ski out of the with various types of ?otation units adapted to hold the 15 water in such position that the skier may start from a forward end of the ski in an uppermost position. still position slowly and gradually increasing speed until he The size and length of the-members 14, 15 may vary is skiing on top of the water. according to the size of the ski and the weight of the user; ried by the metal stirrups ‘69, which in turn are secured 4. A device for use in combination with a water ski to simplify the use of the ski and provide desirable skiing 20 with a volume of approximately 231‘ cubic inches, or characteristics particularly in starting and stopping, where and one example of a water ski has a ?otation chamber one gallon, displacing one gallon of water and having sufficient flotation to hold the water skis in the position of FIG. 1 when the user is wearing a life preserver jacket as illustrated in FIG. 1. in the ski comprises an elongated relatively narrow body substantially ?at for the major portion of its length from a rear end to adjacent a forward end, said forward end being curved upwardly, said body having a bottom side The buoyant chambers on the skis hold the forward end 25 and an upper side, and foot receiving means on said upper of the skis in an uppermost position and enable the user side between said rear and forward ends, said device com to assume the position shown in FIG. 1, which is prac prising a self-contained highly buoyant element positiona tically the optimum position for take-off; and the user ble only on the ski upper side in a location between the ski may maintain this position without the idif?culty that is forward end and the foot receiving means, means for 30 encountered with the skis of the prior art. attaching said chamber to the ski, said ski when at-rest The matter of the timing of the take-off becomes less in Water and with a person applying a downward force at critical with the present water skis because it is easier said foot receiving means and rearwardly of said ele to hold the skis in the take-off position; and the skis may ment causing the ski rear end to submerge, the body of the also be used as a buoy to aid in the support of the user 35 ski assuming an angle to the surface of the water and said when he is in the water at a distance from the boat. forward end projecting upwardly out of the water, the As previously stated, they are also visible; and a lost ski may be found more easily because the front end tends to project upward, out of the water. It will thus be observed that I have invented an im proved ski construction which makes the take-off easier for beginners and those not skilled in water skiing; but the present skis are also advantageous to anyone, as they make the take-off easier, they are more readily visible when it is necessary to ?nd a lost ski; and one or both skis may be used as a buoy for supporting the user in the water in case it is necessary. buoyancy provided by said element being such that the ski forward end is prevented from submerging under the Weight of the person applying said force to said foot receiv ing means. 5. A device for use in combination with a water ski as recited in claim 4 wherein said element is elongated in the direction of elongation of the ski and having a ?at bottom side which seats against said ski upper side rearwardly of the curved forward end. 45 6. A device for use in combination with a water ski as recited in claim 4 wherein said means for attaching said element to the ski comprises a ?rst fastening member which connects a forward end of said element to the ski While I have illustrated a preferred embodiment of my invention, many modi?cations may be made without departing from the spirit of the invention, and I do not and .a second fastening member which connects a rear end wish to be limited to the precise details of construction of the element to the ski, both of said members being de set forth, but desire to avail myself of all changes within tichable whereby the element may be removed from the the scope of the appended claims. s 1. ‘Having thus described my invention, what I claim as 7. A device for use in combination with a water ski as new and desire to secure by Letters Patent of the United recited in claim 5 wherein said element bottom side has 55 States is: portions which extend outwardly of the remainder of the 1. A water ski having an elongated body and an up element to provide ?anges with which said attaching means wardly turned front end, the said ski having its bottom substantially plane and having its upper side provided iiengageable to facilitate connection of the element. to the with a ?otation member at its front end only and hav 8. A device for use in combination with a water ski as s 1. ing foot engaging means on its upper side between the 60 recited in claim 4 wherein said element has a width not ends of the ski in the proper location to support a skier, greater than the width of the ski whereby the chamber said ski assuming a position diagonal to the water sur does not extend beyond the ski and impair the travel of face with its front end projecting upward out of the water the ski in the water. when supported on the foot of the skier, due to the down 9. A device for use in combination with a water ski as ward pressure on the ski by the foot of the skier at the 65 recited in claim 4 wherein the upward projection of said foot engaging means behind the ?otation member, which element from said ski upper side is less than the upward holds the front end of the ski uppermost at this time with projection of the upturned forward end of the ski where the front end of the ski out of the water in such position by the element does not interfere with the normal travel that the skier may start from a still position slowly and gradually increasing speed until he is skiing on top of the 70 of the ski through water when in use. 10. A device for use in combination with a water ski water, and means for attaching said ?oation member to to simplify the use of the ski and provide desirable skiing the ski. characteristics particularly in starting and stopping, Where ‘2. A water ski according to claim 1, wherein said ?o in the ski comprises an elongated relatively narrow body tation member comprises a shaped upper shell having an attaching ?ange, a bottom wall attached to said ?ange, 75 substantially ?at for the major potion of its length from 3,096,530 8 a rear end to adjacent a forward end, said forward end 1,723,473 being upturned, said body having a bottom side and an upper side, and foot receiving means on said upper side between the rear and forward end of the ski, said device 1,758,289 1,793,905 _ 1,869,186 1,918,508 comprising a highly buoyant element positionable on the ski upper side in a location between the ski forward end and the foot receiving means, means for attaching said 2,124,062 ' element to the ski, said ski when at-rest in water and with a person applying a downward force at said foot receiv 2,740,972 2,938,220 ing means and rearwardly of said buoyant element causing the body of the ski to assume an angle to the surface of 10 the water with said rear end submerged and said forward end projecting upwardly out of the water, the buoyancy provided by said element being such that the ski forward end is held from submerging. References Cited in the ?le of this patent UNITED STATES PATENTS 1,104,441 Nelsen _______________ __ July 21, 1914 2,482,074 15 3,031,697 Erickson ______________ __ Aug. 6, Loy _________________ __ May 13, Chesnut ______________ __ Feb. 24, Davidson _____________ __ July 26, Wheeler ______________ __ July 18, Grant ________________ __ July 19, Stephens _____________ __. Sept. 13, Taylor _______________ __ Apr. 10, Puckett ______________ __ May 31, Klein _________________ .. May 1, 1929 1930 1931 1932 1933 1938 1949 1956 1960 1962 FOREIGN PATENTS 909,421 515,386 1,126,789 Germany _____________ __ Apr. 15, 1954 Canada _______________ __ Aug. 9, 1955 France _______________ __ July 30, 1956 OTHER REFERENCES A magazine called: “Boats,” volume 54, No. 7, page 3, July 1957.