Circular Patents (Class 441/67)
  • Patent number: 9364699
    Abstract: An inflatable recreation device is formed of a plurality of inflatable donut-shaped tubular members secured in stacked configuration and having an opening extending therethrough. With a first end of the plurality of stacked members facing upwardly, a rebound surface secured to the first end extends over a first end of the opening to form a rebound surface upon which a user can jump. When the device is turned over, the rebound surface faces downwardly to form a bottom of the opening and a second end of the plurality of stacked members and the opening face upwardly whereby users can sit around the second end of the stacked members with feet extending into the opening, or can walk around the second end as a balance beam. Further, the stacked members can be turned on their side and rolled with users inside the opening.
    Type: Grant
    Filed: December 6, 2013
    Date of Patent: June 14, 2016
    Inventor: Donald W. Gordon
  • Patent number: 8974262
    Abstract: An apparatus for providing enhanced traction for an inflatable device is disclosed. The apparatus includes an inflatable gear assembly attachable to the inflatable device. The inflatable gear assembly defines an outside diameter that is greater than the largest cross-sectional distance of the inflatable device. The inflatable gear assembly and the inflatable device may be configured as totally integrated, partially integrated, or totally separated air chambers.
    Type: Grant
    Filed: July 16, 2013
    Date of Patent: March 10, 2015
    Assignee: SDS Asia Limited, BVI #1748971
    Inventor: Leroy L. Peterson
  • Patent number: 8523621
    Abstract: The cover for inflatable tube includes a hollow, toroidal member made from a durable, puncture-resistant, abrasion-resistant fabric, the toroidal member being adapted for covering an inflatable float tube. The cover may also include a plurality of spaced, elongate, flexible eyelets are formed about a periphery of the cover portion on the outer surface and are arranged to extend radially about the periphery of the cover. The cover may further include a flat bottom member the extends across the annular opening defined by the toroidal member, providing a flat surface so that the tube may be used for sledding on snow-covered surfaces, or to prevent swimmers from extending their torsos through the tube, thereby permitting the swimmers to sit on the bottom sheet instead of dangling their feet below the tube, presenting the risk that the swimmer's foot may be entrapped by underwater obstructions in a river or other shallow water.
    Type: Grant
    Filed: August 19, 2011
    Date of Patent: September 3, 2013
    Inventor: Lucian D. Whitman
  • Patent number: 8475288
    Abstract: A snow and water sliding carrier for amusement center has a body having a general shape of a torus having a central opening, a floor member that closes the central opening, and has an opposite side defining a bottom member, such that the floor member is concave and the bottom member is convex. The bottom member extends beyond the floor member and is co-joined with the outside wall, and includes a plurality of threaded receptacles adapted to receive respective threaded nipples, wherein each threaded nipple is adapted to be threaded into a respective receptacle in varying amounts, such that a predetermined rotation of the sliding carrier is induced and controlled.
    Type: Grant
    Filed: June 3, 2011
    Date of Patent: July 2, 2013
    Inventors: Nicolas Raymond, Mercier Raymond
  • Patent number: 8047886
    Abstract: A round boat has a one-piece, open-topped hull having a substantially flat bottom and outwardly concave but substantially vertical sides surmounted by flared gunnels. The concave sides mate with the inner walls of a toroidal-shaped flotation device, such as an inflated bladder, or tube, which fills the concavity and supports the hull. The tube and the hull are substantially coplanar such that cargo and passengers are supported within the toroidal opening of the tube. The tube and hull may be provided with a covering, or sheath, to help protect the tube from unnecessary wear or damage, and to provide means for replaceable decoration or identification. At least one seat is mounted to and projects radially inward from the gunnels to center the weight of a passenger above the hull, thereby increasing stability of the boat with the added weight of each additional passenger. The seat may include a swivel for convenience of movement.
    Type: Grant
    Filed: January 7, 2009
    Date of Patent: November 1, 2011
    Inventors: Richard W. McLarty, Linda L. McLarty
  • Publication number: 20090305588
    Abstract: A wake board has a body (1) with a lower surface (3), an upper surface (5), and a perimeter (7). The perimeter (7) may have a lower portion (9) having a first radius extending upwardly from the lower surface and an upper portion (11) towards the upper surface and which is relatively sharp or has a second radius substantially smaller than the first radius. The lower portion (9) and upper portion (11) may extend around at least a major part of the perimeter (7), with the upper surface having a substantially flat perimeter region (13) extending around at least a major part of the wake hoard body and adjacent the upper portion of the perimeter. The wake board may have a nose section with a first curved portion which is a concave shape as viewed from the lower surface of the wake board body.
    Type: Application
    Filed: August 15, 2005
    Publication date: December 10, 2009
    Inventor: William Douglas McKee
  • Publication number: 20090186539
    Abstract: A water skiing disk that is used by a water skier at slow speeds does not require bindings or other similar types of foot constraints and has a large exterior diameter dimension to hold up one or more skiers on the water at slow speeds while being light weight and easily transported by a single person.
    Type: Application
    Filed: January 18, 2008
    Publication date: July 23, 2009
    Applicant: AMERICAN DISK
    Inventor: James W. McDonald
  • Patent number: 7238073
    Abstract: A towable structure is configured to be towed behind a boat while floating above the surface of a body of water. In one implementation, the towable structure has a platform for supporting one or more passengers thereon extending between or otherwise supported by at least three water engaging base members. The base members are buoyant to extend above the surface of the body of water. The platform extends from a location sufficiently elevated on each of the base members so that the platform stays out of the water under normal operation when unloaded and when supporting one or more passengers.
    Type: Grant
    Filed: June 30, 2004
    Date of Patent: July 3, 2007
    Assignee: HO Sports Company, Inc.
    Inventor: Kyle J. Hendrickson
  • Patent number: 7232356
    Abstract: A towable structure is configured to be towed behind a boat while floating above the surface of a body of water. In one implementation, the towable structure has a platform for supporting one or more passengers thereon extending between or otherwise supported by at least three water engaging base members. The base members are buoyant to extend above the surface of the body of water. The platform extends from a location sufficiently elevated on each of the base members so that the platform stays out of the water under normal operation when unloaded and when supporting one or more passengers.
    Type: Grant
    Filed: December 28, 2005
    Date of Patent: June 19, 2007
    Assignee: HO Sports Company, Inc.
    Inventor: Kyle J. Hendrickson
  • Patent number: 7052344
    Abstract: The present invention provides a method of manufacturing an inflatable deck by sealing a top and bottom sheet of material at an outer peripheral edge, at spaced intervals interior of and parallel to the outer peripheral edge, and at opposing edges formed when a wedge-shaped section is removed. An air inlet valve is fitted in one of the top or bottom sheets. The deck may be circular, square, rectangular, or polygonal in shape. When the deck is inflated it has flat top and bottom surfaces.
    Type: Grant
    Filed: October 11, 2004
    Date of Patent: May 30, 2006
    Assignee: Sportsstuff, Inc.
    Inventor: Leroy L. Peterson
  • Patent number: 6896569
    Abstract: A float tube cover for covering the exterior of an inflated inner tube or the like with a fabric material which will prevent adhesive burns and abrasions and also prevent the inner tube from becoming excessively heated from exposure to the sun. The cover is desirably provided with a leash to allow the user to retrieve the tube should the fall off of the tube as well as one or more pockets for holding items such as suntan lotion, sunglasses, and the like.
    Type: Grant
    Filed: June 23, 2003
    Date of Patent: May 24, 2005
    Inventor: Linda J. Wittenrich
  • Publication number: 20040137809
    Abstract: A hydroplane board is a circular board member which is placed in very shallow water and launched by the user with a shove of their foot. The user walks, jogs, or runs and jumps onto the moving board inducing hydroplaning. The user may jump off, simultaneously accelerating a slowing board, and then jump back on, thus indefinitely extending the hydroplane action.
    Type: Application
    Filed: January 13, 2003
    Publication date: July 15, 2004
    Inventor: Charles Benedict Quinn
  • Patent number: 6761602
    Abstract: A hydroplane board member which is placed in very shallow water and launched by the user with a shove of their foot. The user walks, jogs, or runs and jumps onto the moving board inducing hydroplaning. The user may jump off, simultaneously accelerating a slowing board, and then jump back on, thus indefinitely extending the hydroplane action.
    Type: Grant
    Filed: January 13, 2003
    Date of Patent: July 13, 2004
    Inventor: Charles Benedict Quinn
  • Publication number: 20040087224
    Abstract: A pedal-powered aquatic vehicle is a positively buoyant aquatic vehicle with a lightweight frame and driven flotation wheels on either side of the occupant(s) seat. A pedal drive is incorporated into the lightweight frame to produce propulsion through a chain driven multi-geared system coupled with a drive shaft. Outer drive wheels rotate the flotation driven wheels to propel across water and level ground. Paddles are affixed to the driven flotation wheels. Steering linkages disengage drive wheels independently to provide steering.
    Type: Application
    Filed: January 11, 2003
    Publication date: May 6, 2004
    Inventor: David Paul Hart
  • Publication number: 20040009722
    Abstract: A skim board is provided which incorporates a flat circular form for use in the receding surf at the waters edge. A rigid flat structure of sufficient weight, thickness and circumference so as to carry a rider across the shallow water and wet sand with little resistance. A circumference large enough to allow the rider side to side and fore and aft stepping about the platform surface, thus affording a certain measure of control and maneuverability.
    Type: Application
    Filed: July 15, 2002
    Publication date: January 15, 2004
    Inventor: Kenneth C. Towey
  • Patent number: 6648707
    Abstract: An inflatable towable vehicle including an inflatable bladder and a protective shell having a rigid lower portion and a flexible upper portion. The bladder includes an inflation valve that is positioned to underlie a closeable access opening in the flexible upper portion of the shell, and hand grips and a towing strap are attached to the upper portion of the shell. The rigid lower portion of the shell is made of a durable material that effectively protects the bladder in abrasive environments that are present when the vehicle is used on ice or snow.
    Type: Grant
    Filed: June 6, 2002
    Date of Patent: November 18, 2003
    Assignee: Sportsstuff, Inc.
    Inventor: Leroy L. Peterson
  • Patent number: 6543378
    Abstract: A watercraft apparatus comprises a rigid platform supporting a seat on an upper surface and a rudder rearward and extending downwardly for providing stability to the apparatus when afloat. A strut extends forward of the platform and supports a propulsion unit mount. A frame is engaged with the strut and extends downwardly for supporting an electrical battery. A toroidal flotation structure is engaged with the strut and the undersurface of the platform for floating the apparatus on a body of water the frame is received within a central aperture of the flotation structure and a bottom cover, integral with the flotation means, closes the center aperture at a lower surface of the flotation structure.
    Type: Grant
    Filed: September 24, 2001
    Date of Patent: April 8, 2003
    Inventor: Toney R. Johnson, Sr.
  • Patent number: 6331128
    Abstract: A recreational device having a moisture and tear and UV resistant outer surface is disclosed. The core is manufactured from a flexible, lightweight material having a weight of about 2.0-2.5 pounds per cubic foot, such as two-part polyurethane or closed cell foam through injection or open molding. An inner core can be placed concentrically within the outer core, with the inner core having a second density. The flexible outer surface can be integral to the core or applied subsequent to manufacturing and can be materials such as a latex or neoprene. Preferably at least one indentation is molded into the core to receive a container. At least one connector receiving area, such as a directly inserted clip, ring or other fastener, can be embedded into the core to receive an attachment strap to attach multiple devices together.
    Type: Grant
    Filed: October 26, 1999
    Date of Patent: December 18, 2001
    Inventor: Christie Liscomb Schmick
  • Patent number: 6283811
    Abstract: A steerable towable vehicle including a body member with a pair of fore-and-aft directed laterally spaced fins attached to the bottom surface. A towing line is attached to the bottom surface at a point centered between the fins adjacent the front of the fins. A passenger carried on the top surface of the body member can shift their weight to one side or the other of the towing line attachment point to selectively steer the vehicle to the right or left. Hand grips are provided to assist the passenger in effectively shifting their weight to steer the vehicle.
    Type: Grant
    Filed: May 18, 2000
    Date of Patent: September 4, 2001
    Assignee: Sportsstuff Inc.
    Inventor: Leroy L. Peterson
  • Patent number: 6220908
    Abstract: An inflatable towable vehicle including a tapered hull. The hull is formed of a plurality of concentrically disposed inflatable rings with chambers which have progressively increasing diameters from the outermost ring to the innermost ring. Interior connecting webs form shared walls for the adjacent chambers, and openings in the webs allow fluid communication between the chambers so that a single inflation valve can be used to simultaneously inflate all of the chambers. When inflated, the centers of the chambers are horizontally aligned to yield a hull profile that is tapered from both the top and the bottom. The passenger cockpit is defined by the open area in from the innermost ring, and a floor including an inflatable section and a drain opening. The tapered hull acts to minimize resistance to the water or snow over which the vehicle is being towed, and results in an aesthetically appealing vehicle profile.
    Type: Grant
    Filed: December 10, 1999
    Date of Patent: April 24, 2001
    Assignee: Sportsstuff, Inc.
    Inventor: Leroy L. Peterson
  • Patent number: 6182594
    Abstract: An innertube accessory that facilitates towing an innertube by a boat. The accessory includes a shell for receiving any size innertube and attaching it. The accessory is suitable for being towed by the boat, by a track and trolley mechanism that adapts to different towing angles away from the boat center line. The innertube rider can steer the accessory by operating a rudder. The rudder is a steering rope that controls pivoting of a rudder fin relative to the shell. Additional fins provide stability.
    Type: Grant
    Filed: October 12, 1999
    Date of Patent: February 6, 2001
    Inventor: Charles G. Wilson
  • Patent number: 6010382
    Abstract: An adjustable, seat-planar hydroplane apparatus of an inflatable, pneumatic inner tube with a central opening and a flexible cover encasing the tube and forming a smooth hydroplane bottom surface over the opening with an adjustable flexible strip detachably secured at the one, the other, or both ends, or in an intermediate overlap section which adjustably forms a top, taut plane surface, a draped seat in the opening, or may be removed and installed as desired.
    Type: Grant
    Filed: April 23, 1999
    Date of Patent: January 4, 2000
    Assignee: Earth & Ocean Sports, Inc.
    Inventor: Paul Kennedy
  • Patent number: 5899782
    Abstract: The present invention is a water sport device that is easy to use and may be steered. This device comprises a flotation assembly, a connecting member, and a connecting assembly, where the connecting member is attached to a front portion of the flotation assembly. The connecting assembly moves along the connecting member to change an effective attachment point of a towline to the flotation assembly. Sponsons are preferably arranged on the underside of the flotation assembly. These sponsons are preferably toed in to provide a rearwardly diverging channel between them. Outer surfaces of the sponsons are outwardly and upwardly canted to allow the entire device to move side to side in the water. A handle assembly is provided that allows the rider to move the position of the connecting assembly relative to the connecting member.
    Type: Grant
    Filed: May 12, 1997
    Date of Patent: May 4, 1999
    Inventor: Don J. Martin
  • Patent number: 5846108
    Abstract: A new ski disk for supporting a user while being towed behind a boat. The inventive device includes a circular disk member having a central planar portion and an upturned outer edge portion. A non-slip pad is attached to the top of the central portion to provide cushioning to the user. A track member is secured to the central portion and is embedded within the non-slip pad so that it does not extend beyond the top of the pad. A pair of foot holds are connected to the track member in a manner permitting adjustment of the foot holds relative to the track member, or else the foot holds can be removed when they are not to be used.
    Type: Grant
    Filed: April 17, 1997
    Date of Patent: December 8, 1998
    Inventor: Larry R. Milford
  • Patent number: 5791957
    Abstract: A water sports device for a standing rider who can turn the device in any direction relative to the towing water craft while at the same time elevating the rider above the surface of the water. This device includes a round board with anchor points on the upper surface for foot bindings as well as a round bar extending downward from the center of the board on which round planning disks are mounted generally at the midpoint and lower end. The rider controls direction and elevation by shifting weight on the board and while the round upper board initially rides on the surface of the water with the planing disks submerged, as the rider increases speed and shifts weight backwards the middle planing disk comes to the surface and ultimately only the lower disk rides on the water. Ideally, towing speed is adjusted so that the riders' weight is comfortably supported with the middle planning disk on the surface of the water while the lower disk remains submerged and the board is elevated.
    Type: Grant
    Filed: January 21, 1997
    Date of Patent: August 11, 1998
    Assignees: Juan De La Cierva, Jr., Samuel Hunter
    Inventor: Juan De La Cierva, Jr.
  • Patent number: 5476404
    Abstract: An inflatable recreational inner tube toy comprising a seat further including a toroid-shaped inflatable primary tube having a bottom surface, a top surface, an inner periphery defining a hollow interior, an outer periphery, a plurality of straps extended across the interior and coupled to the inner periphery, a generally-inflatable leg rest integrally coupled to and extended outwards from the outer periphery of the primary tube, and a valve for allowing the seat to be inflated and deflated; and a back rest formed of a toroid-shaped inflatable secondary tube sized smaller than the primary tube with the back rest coupled to the inner periphery of the primary tube and extended upwards therefrom and with the back rest further including a valve coupled thereto for allowing it to be inflated and deflated.
    Type: Grant
    Filed: October 18, 1994
    Date of Patent: December 19, 1995
    Inventor: John B. Price
  • Patent number: 5383804
    Abstract: A ski tube includes a torus-shaped innertube, a generally torus-shaped cover member bearing a continuous zipper or other releasable fastener preferably along a circumference thereof, a base portion, and a generally V-shaped towing flap member adapted for releasable capture of a tow rope handle.
    Type: Grant
    Filed: October 19, 1993
    Date of Patent: January 24, 1995
    Inventors: Joseph E. Mitch, Klara D. Mitch
  • Patent number: 5372527
    Abstract: The present invention relates to a turbo kick board. The turbo kick board includes, a base, propellers attached to the base to make the base stop and go, and a rudder attached to the base to make the base turn right and left.
    Type: Grant
    Filed: January 21, 1993
    Date of Patent: December 13, 1994
    Inventor: Hector D. Flores Cardona
  • Patent number: 5279510
    Abstract: A riding apparatus has an inflatable member, a cover and a cushion. The inflatable member has a cavity that has a top end and a bottom end. The cover has a bottom wall and side walls that form an enclosure for receiving the inflatable member. The cushion is located on the bottom wall so as to extend across the bottom end of the inflatable member cavity. A rider sitting in the cavity of the riding apparatus sits or kneels on the cushion. The cushion is secured inside of the cover by clamping the edge portions of the cushion between the inflatable member and the cover.
    Type: Grant
    Filed: September 23, 1992
    Date of Patent: January 18, 1994
    Inventor: Andrew P. Remy
  • Patent number: 5149117
    Abstract: A saucer-shaped toy is designed to be utilized alternatively as a swing, a water slide and a snow slide. The saucer may be hung from a support when functioning as a swing, while it may be towed behind a boat when operable as a water slide. The saucer shape permits the toy to be used as a sled up on a snow covered surface, and removable runners can be employed to improve its steering capability over snow. When used as a water slide, a removable rudder can be used as well as water spray jets or enhanced aesthetic appeal. An upright steering pole can be attached to the saucer with a stiff spring so as to permit the pole to flexibly move to lessen the likelihood of injury to a user under certain situations.
    Type: Grant
    Filed: September 9, 1991
    Date of Patent: September 22, 1992
    Inventors: Doublas A. Wilkens, Sr., Ronald F. Ullrich
  • Patent number: 5057044
    Abstract: A recreational water sled and method for carrying a rider while being towed behind a boat includes a sled member and a downwardly-extending rudder, with a vertical steering pole extending approximately to chest height for a standing rider, and with a three point tow rope system, including a tow rope section attached to the upper extremity of the steering pole.
    Type: Grant
    Filed: June 22, 1990
    Date of Patent: October 15, 1991
    Assignee: James M. Hoenstine
    Inventors: Robert L. Moore, Kevin L. Moore
  • Patent number: 4820219
    Abstract: A recreational device comprising an elastomeric body portion capable of holding compressed gas and having a surface temperature reducing coating integrally formed therewith on the outer surface thereof. The device is used in water sports where flotation is desired to reduce creature discomfort and physiological damage.
    Type: Grant
    Filed: December 7, 1984
    Date of Patent: April 11, 1989
    Inventors: Thomas H. Fortier, Jr., Carl J. Buetzow
  • Patent number: 4764313
    Abstract: A flotation platform supports a mast assembly through which a drive shaft extends having a wind driven turbine on the upper end and a propeller on the lower end situated below the water surface. The propeller is rotated by the wind turbine and causes localized water circulation in the body of water in which the mill is situated thus aerating and mixing the water in the summer and also maintaining an ice free area around the mill in winter.
    Type: Grant
    Filed: November 3, 1986
    Date of Patent: August 16, 1988
    Assignee: Sunset Solar Systems Ltd.
    Inventors: Douglas Cameron, Lorraine Cameron
  • Patent number: 4708676
    Abstract: It is a multi-function pad device with driving mechanism; particularly, it is a device including a pad, a buoy ring, a pad sheet and a driving mechanism. Upon different elemental members being assembled in different manners, different functions can be provided for recreation activities. The various assemblies not only can be used on water or ground for recreation activities, but also can be used on snow ground, beach or lawn. Further, the device may also be used as a lifeguard on water and transportation for the aquatic product raiser.
    Type: Grant
    Filed: October 27, 1986
    Date of Patent: November 24, 1987
    Inventor: Jinn-Pin Lin
  • Patent number: 4635581
    Abstract: A tube cover has top and bottom flat portions stitched together along mutual peripheral edges, and a hitch which consists of a plurality of crossing straps that are interconnected by stitching, and a D-ring attached to one of the straps.
    Type: Grant
    Filed: February 15, 1985
    Date of Patent: January 13, 1987
    Inventor: Robert S. Scheurer
  • Patent number: 4613311
    Abstract: An automatically disconnecting connector apparatus for a floatable device, such as a fisherman's float tube, includes one coupling member having an aperture and another coupling member having another aperture. The other coupling member is bifurcated so that it can receive the first-mentioned coupling member therein. In this relationship, the apertures of the coupling members are aligned for receiving a shaft of a pin member which is retained in the apertures by gravity when the floatable device is in an upright position. The pin member is automatically extracted in response to gravity when the floatable device is overturned, thereby automatically disconnecting the connector apparatus.
    Type: Grant
    Filed: February 6, 1985
    Date of Patent: September 23, 1986
    Inventor: John A. V. Wood
  • Patent number: 4613131
    Abstract: A solid, rigid foam device having a continuous outer skin, a flat, circular upper surface that merges smoothly into a symmetric, oblated spherical surface, the upper surface having four, spaced, shallow indentations around its periphery and a number of anchor points that do not extend above the flat surface, the anchor points typically being nuts embedded in the foam plastic body.
    Type: Grant
    Filed: November 26, 1985
    Date of Patent: September 23, 1986
    Inventor: Erma N. Anderson
  • Patent number: 4552539
    Abstract: An inflatable hydroplane apparatus uses a pneumatic vehicle innertube with a flexible fabric cover including an annular flexible fabric positioned partly covering said innertube and forming a smooth bottom therefor. A handle strap is stitched to said cover for the rider to hold on to and a tow rope attaching strap is stitched to the bottom portion of the cover for attaching a tow rope from a boat for pulling the hydroplane. The innertube is inflated in the cover to form the hydroplane and deflated for storage.
    Type: Grant
    Filed: May 24, 1984
    Date of Patent: November 12, 1985
    Inventors: James M. Hoenstine, Thomas E. Ray
  • Patent number: 4521200
    Abstract: A surfboard type boat convertible into a sailboat or buoy and comprising a circular floating board enclosed by a shell of polyethylene and containing foamed polystyrene. A cone-shaped keel likewise filled with foamed polystyrene is provided on the lower side of the floating board. A hollow cylinder extends upwardly from and perpendicularly to the floating board and a piston provided with a handlebar at its upper end is slidably mounted within the cylinder. A water ejection tube extends transversely of the lower end of the cylinder through the cone-shaped keel. A rudder operable by the heels of the user of the boat is mounted downstream of the outlet of the water ejection tube. By lifting the piston water is sucked into the cylinder and by vigorously pushing down the piston the water is expelled through the ejection tube and the boat is propelled. The piston can be replaced by a mast for a sail without boom operable by the user.
    Type: Grant
    Filed: September 30, 1983
    Date of Patent: June 4, 1985
    Inventor: Ubaldo Fatello
  • Patent number: 4463954
    Abstract: An aquatic surface projectile for recreation and/or exercise use either individually or in team play. The aquatic device is manually propelled by throwing so as to skim along the surface of a body of water in a smooth skimming action and not by skipping or tumbling. The lower surface of the projectile is preferably an inverted frusto-conical shape, with shape variables including the inner radius, the outer radius, and the altitude angle. The lower surface shape produces a positive, nose-up attitude and hydrodynamic lift to reduce drag for enhancing range and velocity of the projectile while providing smooth skimming on the water surface. In addition to the projectile shape considerations, the projectile is also made relatively lightweight to provide enhanced skimming action and to prevent undesired skipping and tumbling of the projectile.
    Type: Grant
    Filed: December 10, 1982
    Date of Patent: August 7, 1984
    Inventors: Richard G. Panse, Jane E. Panse
  • Patent number: 4451239
    Abstract: An inflatable hydroplane apparatus uses a pneumatic vehicle innertube with a flexible fabric cover including an annular flexible fabric positioned partly covering said innertube and forming a smooth bottom therefor. A handle strap is stitched to the cover for the rider to hold on to and a tow rope attaching strap is stitched to the bottom portion of the cover for attaching a tow rope from a boat for pulling the hydroplane. The innertube is inflated in the cover to form the hydroplane and deflated for storage.
    Type: Grant
    Filed: September 27, 1982
    Date of Patent: May 29, 1984
    Inventors: James M. Hoenstine, Thomas E. Ray
  • Patent number: 4366963
    Abstract: A convertible play vehicle comprising an inflatable flotation ring encircling an integral reinforced, load-bearing platform that lies mid-way of the height of the flotation ring and has spaced openings near the circumference thereof that may serve as hand grips and a separable sled portion releasably secured on the underside of the inflatable ring by straps that are attached to the sled and extend over the ring, passing twice through the ring platform via the circumferential openings therein. The inflatable ring may be formed of two circular disks of rubber-like material vulcanized together at their outer circumference and at a concentric circle spaced inwardly therefrom to provide an inflatable endless tube therebetween. The sled may be of fiberglass or plastic with its ends rounded up to accomodate the inflated ring and provided with integral strap-passing eyelets on its upper side and parallel runners extending longitudinally on the underside.
    Type: Grant
    Filed: July 2, 1979
    Date of Patent: January 4, 1983
    Assignee: Funsafe (Canada) Ltd.
    Inventors: Lloyd Reeves, L. W. Sorensen