US 3179080 A
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Description (OCR text may contain errors)
April '20, 1965 D. CAMPBELL SWIMMERS FLOAT 2 Sheets-Sheet 1 Filed July 15, 1963 INVENTOR.
DONALD CAMPBELL FIG-I ATTORNEY United States Patent 3,179,080 SWIMMERS FLOAT Donald Campbell, 12755 E. Eight Mile Road, Warren, Mich. Filed July 15, 1963, Ser. No. 294,871 3 Claims. (Cl. 115-31) The present invention relates to floatable devices and more particularly to such a device adapted to carry a swimmer and having means actuated by leg motion of the swimmer to propel the device through the water.
Heretofore floating devices for swimmers either have not been provided with means to provide extra propulsion beyond that produced by the normal swimming motion or such means have been provided the quite complex mechanism used to produce the desired propulsion has made the manufacturing costs prohibitive.
It is an object then of the present invention to reduce the manufacturing costs of swimmer propelled floating devices by providing such a device having economically constructed propulsion producing means.
It is another object of the present invention to provide a swimmer propelled floating device by providing a floatable bodyadapted to carry a swimmer and a means carried thereby for producing propulsion upon movement of the swimmers legs.
Still further objects of the present invention will readily occur to one skilled in the art to which the invention pertains upon reference to the following drawings in which like reference characters refer to like parts throughout the several views and in which:
FIG. 1 is a top plan view of one preferred embodiment of the present invention.
FIG. 2 is a perspective view of the embodiment illustrated in FIG. 1.
FIG. 3 is a longitudinal cross sectional view of the preferred embodiment illustrated in FIG. 1.
FIG. 4 is a cross sectional View as seen substantially from line 4--4 of FIG. 3, and
FIG. 5 is a fragmentary sectional view of a valve member of another preferred embodiment of the present invention.
Now referring to the drawings for a more detailed description of the present invention, FIGS. 1-4 illustrate one preferred embodiment as comprising a floatable body member 10. As can best be seen in FIGS. 1-3 the body member is preferably formed to provide an elongated forward portion 12 adapted to carry the head and upper body portion of a swimmer. Side portions 14 extend from and are substantially parallel with the forward portion 12 to provide support for the arms of the swimmer. A medial portion 16 extends from the forward portion 12 to a position intermediate and parallel with the side portions 14. The leading edge 18 of the forward portion 12 is preferably rounded as can best be seen in FIG. 3. The body member 10 is constructed of any suitable floatable material such as Styrofoam or the like.
As can best be seen in FIG. 3, the lower surface of the body member 10 is provided with a substantially centrally located elongated recess 20. A tubular member 22 is carried in the recess preferably by longitudinally positioned brackets 24 secured to the body member 10 as by bolts 26. A second tubular member 28 telescopes into the tubular member 22. A spring member 30 is carried by suitable fixtures 32 and 34 secured to the ends of the tubular members 22 and 28 respectively to urge the tubular member 28 toward the solid line position shown in FIG. 3.
As can best be seen in FIGS. l-3, a support bracket 36 is secured to the free end of the tubular member 28. A perforated foot support member 38 is carried on each side of the tubular member 28 by bolts 40 and the bracket 3,179,836 Patented Apr. 20, 1965 36. A strap 41 is secured to each of the members 38 to receive a foot of the swimmer. The bolts 40 are provided with spacers 42 to retain a perforated member 44 in a spaced position from each of the foot support members 38.
In the preferred embodiment illustrated in FIGS. 1-4 a centrally located flat member 45 and a plurality of overlapping flap members 46 are provided extending between and substantially covering the rearwardly facing surface of the perforated members 44. The centrally located flap member 45 is preferably secured to the perforated members 44 on a line substantially along the longitudinal axis thereof and the flap members 46 are preferably secured to the perforated members along the longitudinal edge which is closest to the central flap member 45. The flap members 4546 are preferably constructed of any suitable resilient material such as rubber or the like.
The swimmer positions himself as shown by the dotted lines in FIGS. 2 and 3 with his head and body resting on the forward portion 12. A central depression 47 in the upper surface of the body 10 accommodates the swimmers body in a comfortable manner. The side portions 14 provide support for the arms and the feet are received by the straps 41. To propel the device forward, the legs are extended to the dotted line position shown in FIG. 3 to move the tubular member 28 outwardly against the force of the spring member 30. The force of the water against the flap members 45-46 prevents them from opening and since little water can pass through the perforated members 44 the device will be propelled forward. As the legs of the swimmer are drawn toward the body, the tubular member 28 will be urged by the spring member 30 toward the solid line position shown in FIG. 3. During retraction of the tubular member 28 the force of the water through the forwardly facing surface of the perforated members 44 will open the flap members 45-46 to permit water to pass therethrough to prevent a backward propulsion as the device is moved into position for the next stroke.
FIG. 5 is a fragmentary illustration of another preferred valving means of the present invention. A frustoconical valve seat member 142 is carried in a position longitudinally spaced from each of the foot support members 38 by means of bolts 40 and spacers 42. A valve guide 144 is carried between the foot support member 38 and a perforated member 145. The valve guide 144 is positioned to extend substantially axially through the seat member 42 and provides the means by which a valve member 146 is axially slidably carried.
It is apparent that the float device using the valve means illustrated in FIG. 5 will operate substantially similar to the device described above. During movement of the legs away from the body the force of the water will close the valve member 146 to produce the desired forward propulsion. During retraction of the legs the force of thewater will open the valve member 146 to prevent backward propulsion.
It is also apparent that although I have described several embodiments of my invention other chan es and modifications can be made without departing from the spirit of the invention or the scope of the appended claims.
1. A device for use by a swimmer, comprising:
(a) a buoyant body member formed in a thick planar configuration and having a central forward section and a pair of side sections attached to and disposed on opposite sides, and displaced rearwardly with respect to the forward section;
said central section and extending between said side :3 sections and projecting rearwardly from said'central section beyond'the projection of side sections;
() a second tubular member operative to telescope with and being slidably supported by said first tubular member'so that it may be disposed in a first, retracted position wherein its length is substantially telescope'd Within said first'tubul'ar member or a second, extended position wherein a substantial portion of its length extends beyond said first tubular member;
(d) a propelling member carried on the free end of said second tubular member and having an extension in a plane perpendicular to the axis of said tubular members;
(e) valve meanscarried by said propelling member and operable to close a passage through said propelling member at such time as said second tubular member is movedfrom itsretracted position to its extended position and to open said valve means at such time as said second tubular member is moved from V itsexte'nded position toward its retracted position;
(1) and foot support means carried on said propelling member and'oper'ative to'engage the legs of an operatorlsupported With'histrunk on said central portion of the body member and his arms on said side portions ofthe body member.
2. The structure of claim 1 wherein said valvemeans comprise a substantial frusto-conical passage substantially coaxial with said-tubular members and having its point facing in the direction of said tubular members and a conical valve member axially movable within said passage and adapted to be urged by water pressure so as to close said passage upon movement of said second tubular member from its retracted to its extended position and to open said passage upon movement of said tubular member from its extended to its retracted position.
3. The structure of claim 1 wherein said valve means comprise a perforated member having a forward facing surface and a rearward facing surface carried by said second tubular member in a position with said surfaces substantially transverse to the line of movement of said second tubular member and a resilient flat member having an edge portion secured to said rearward facing surface and its opposite edge free and operable to open and close a water passage through said perforated member as said second tubular member is moved toward and away from its retracted position.
References (liked by the Examiner UNITED STATES PATENTS 1,030,525 6/12 Myers '26.3 X 1,495,201 5/24 Rado 115-26.3 X 1,587,605 6/26 Scroggins 1l5-26.3 X
FOREIGN PATENTS 414,490 8/46 Italy.
OTHER REFERENCES Popular Science Magazine, April 1960, page 83. MILTON BUCHLER, Primary Examiner. RALPH D. BLAKESLEE, Examiner.