Bizarre Patents
A method of swing on a swing is disclosed, in which a user positioned on a standard swing suspended by two chains from a substantially horizontal tree branch induces side to side motion by pulling alternately on one chain and then the other.
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| Number | Title | Issue Date |
| 5338205 | Pool for practicing and enjoying water-skiing A pool for simulating water-skiing includes a pool body, a pumping plant which pumps water into the pool body as a stream just under the surface of the water in the pool body, a track supported above the periphery of the pool body, an automatic traveling ... | 08/16/1994 |
| 5243710 | Lockably-releasable aquamarine tethering device As is well-known in the prior art, flexible elongate rope-like tethers have a leadward-end attached to a leadwardly-impelled aquamarine equipment (e.g. surfboard, towed water-ski, etc.) and having a trailward-end securely attached to the towed operator (e... | 09/14/1993 |
| 5207606 | Anti-roll ski tow line A water ski tow line constructed to provide anti-rotation of the tow line handle. The water ski tow line has a handle with holes at each end traversing the handle. A tow line is attached to each end of the handle by passing the line around the handle and ... | 05/04/1993 |
| 5167550 | Conversion of a watercraft to a water skier controlled drone Method and apparatus for converting a watercraft having on-board engine and guidance controls into a drone remotely controlled through towing apparatus by the skier riding on skis behind it. A control unit is secured to the watercraft. The control unit en... | 12/01/1992 |
| 5090691 | Active and passive handle for exercise device A handle for exercise devices provides a flexible cord having a loop formed in one end for slidable extension through a medial channel defined in a handle. The handle provides a diametrically larger knob-like structure proximate the inner end of the loop ... | 02/25/1992 |
| 5083955 | Aquatic recreational towing devices Apparatus for exerting a towing force on an aquatic recreational towing device in the initial stages of towing the device while a rider thereon positions himself for purposes of riding on and maneuvering the device as it is drawn over a water surface at h... | 01/28/1992 |
| 5057044 | Recreational water sled and towing method 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 thre... | 10/15/1991 |
| 5052964 | Anti-roll water ski tow line A water ski tow line constructed to provide anti-rotation of the tow line handle. The water ski tow line has a handle with holes at each end traversing the handle. A tow line is attached to each end of the handle by passing the line around the handle and ... | 10/01/1991 |
| 5041040 | Motorboat, without driver, controlled by water skier skiing, or optionally controlled by a driver A motorboat is controlled by a following water skier, when he or she is solo waterskiing, without the assistance of any driver. Optionally, a driver may operate the motorboat while towing a water skier, and an observing passenger is viewing the water skie... | 08/20/1991 |
| 4989531 | Towing release system A towing release system provides an improved user-actuated quick-release towing device for use in water sports, and comprises a wire bail member for installation into the leading edge of a water sports implement such as a kneeboard, and a separate receive... | 02/05/1991 |
| 4981098 | Harness release device for water skiing A harness release device for water skiing is disclosed and includes a handle with a longitudinal bore there through. A first end of a harness line is fixedly received within the bore at one end of the handle while the second end of the harness line is rel... | 01/01/1991 |
| 4958583 | Water ski safety apparatus A water ski safety apparatus includes a first coupler rope for connecting the apparatus to a handle, a second coupler rope for connecting the apparatus to the boat, and deceleration structure for decelerating the apparatus when the apparatus is caused to ... | 09/25/1990 |
| 4934972 | Water skier safety alarm A water skier safety alarm which is characterized by a flag-deploying mechanism mounted on a boat and designed to receive and deploy a flag when a water skier towed by the boat releases his grip on the tow rope handle. In a first preferred embodiment, the... | 06/19/1990 |
| 4895538 | Ski rope handle and method of assembly A ski rope handle is shown which includes an elongate bar having opposing ends. An attachment bracket is mounted on each end of the bar at an inclined angle. Each attachment bracket has a near end joined to the elongate bar and a distant end which project... | 01/23/1990 |
| 4867722 | Convertible water ski handle A water ski tow rope is disclosed herein convertible between a single handle position and a two-handle position wherein the end of a tow rope terminates a pair of lines, each line having a ring and hook, said hooks adapted to be either snapped together in... | 09/19/1989 |
| 4863407 | Water ski tow handle assembly A water ski tow handle assembly comprising a handle and a pair of end caps is disclosed. The handle defines first and second handle rope passageways extending transversely through each end of the handle at an angle to each other. The first handle rope pas... | 09/05/1989 |
| 4846690 | Water ski training apparatus Two pairs of water skis are provided. A ski tow line has one end which is removably connectable to a main tow line and two connecting lines at the other end which are removably connectable to one pair of water skis. A sleeve is slideably located around th... | 07/11/1989 |
| 4782784 | Motorized boat-mounted signaling device for water skiers A device for use on ski boats is disclosed which provides a warning to other boats in the area that a downed water skier is in the water by using a motorized electrical device to raise a flag, either automatically when a skier falls and the tow rope is re... | 11/08/1988 |
| 4740181 | Water skiing tow bridle construction A one-piece tow bridle for water skiing has a rigid, elongated metal handle part forming the base of an isosceles triangle, with an elongated metal member, e.g., a length of stainless steel cable, forked at a mid point to extend rearwardly in the legs of ... | 04/26/1988 |
| 4720279 | Hook water sports hand grip A device is disclosed to assist a wearer in firmly gripping the handle(s) of water sports equipment for long periods of time with minimal hand and arm fatigue. The device comprises a grip strap of webbing material, a protuberant rib which extends transver... | 01/19/1988 |
| 4689611 | Alarm and communication system for water skiers An alarm and communication system for water skiers as provided for use with a boat having a driver and a ski rope secured at one end to the back of the boat and a handle at the other end of the rope to which the skier holds, the system including a battery... | 08/25/1987 |
| 4585420 | Molded rubber ski rope handle with continuous closed finger protector The present invention relates to a ski rope handle assembly of the molded rubber type. The present invention is characterized by an external rope loop connection formed about each end of the handle that is offset from a fully closed finger protector sleev... | 04/29/1986 |
| 4540371 | Ski rope handle assembly The present invention relates to a ski rope handle assembly. One species of the present invention entails a ski rope handle assembly that includes a double entry figure eight loop connection formed about each end of a ski rope handle. A second species inc... | 09/10/1985 |
| 4533334 | Tow line handle An improved handle for towing a person, such as a water skier, has a configuration which matches the natural shape of the grip of human hands as they hold the handle. The handle includes an upwardly and forwardly sloping lower section which is engaged by ... | 08/06/1985 |
| 4483683 | Ski tow signal assembly A radio receiver in a boat actuates a horn and a rotary strobe light when it receives an appropriate signal from a transmitter recessed in the handle of a ski rope. The actuation of the transmitter is controlled by a trigger on the handle.... | 11/20/1984 |
| 4392833 | Combined single and double water ski tow bar A water ski tow bar is arranged to form a single tow bar or handle for a water skier being towed by a boat or the like and separable into two tow bars or handles which may be used by the water skier being towed by the same boat.... | 07/12/1983 |
| 4374638 | Water ski handle and tow rope arrangement A ski tow arrangement for water skiing comprising an elongated handle having a pair of transverse openings and a tow line having free ends terminating in a loop extending into each of the openings. A flat T-shaped retainer is engaged by each of the loops ... | 02/22/1983 |
| 4371352 | Water ski tow handle A water ski tow handle having a unique core bar construction is provided and comprises an elongated tubular and cylindrical core bar constructed of a rigid material. A pair of cylindrical plugs having an outside diameter slightly greater than the inside d... | 02/01/1983 |
| 4335478 | Protective caps for water ski tow line handle A protective end cap for a water ski tow line handle comprised of a sleeve and a cup adapted to snap over each end of the handle and cover the water ski tow line. The cup is adapted to cover the end of the handle including the portion of the tow line enci... | 06/22/1982 |
| 4280240 | Handle for water ski towline with engagement and disengagement means for water ski safety belt A handle for a water ski towline comprises two shell-like halves with engagement and disengagement mechanism for detachably securing a pull strap that is secured to a connecting strap of a safety belt for water skiers secures the pull strap by means of an... | 07/28/1981 |
| 4263685 | Handle for water ski towline with engagement and disengagement means for water ski safety belt A handle assembly for a water ski towline having a handle and mechanism for engagement and disengagement of a safety belt for water skiers. The handle is joined with the engagement and disengagement mechanism and has a device for retaining a pull strap of... | 04/28/1981 |
| 4235182 | Traction arrangement for use by a sail surfer or water skier A traction arrangement for use by a sail surfer or water skier who is pulled along by holding onto a bar-shaped member connected to pulling apparatus, has two pulling elements which are arranged to be worn by a user and each having a leading end, and two ... | 11/25/1980 |
| 4182258 | Water ski tow handle A tow rope handle for water skiing or the like comprising an elongated hand grip with a pair of spaced holes extending transversely therethrough and a tow line threaded through each spaced hole and formed in a loop firmly to encircle the hand grip. The ha... | 01/08/1980 |
| 4069786 | Water ski towing means An improved water skiing tow device is provided, wherein a rigid tubular member is employed to keep the two trace-reins apart, near the bight of the device. The device includes a cross rope arcuate portion and the arcuate portion is intended to be in enga... | 01/24/1978 |
| 4060049 | Water ski rope handle A water ski rope handle of molded plastic construction with floatation cavities in the handle portion and rope anchoring end caps rigidly secured to the ends of the same which provide for mounting of the rope with the knots in the ends of the rope being r... | 11/29/1977 |
| 4043290 | Water ski tow handle A tow rope handle for water skiing or the like comprising an elongated hand grip with a pair of spaced holes extending transversely therethrough, a tow line threaded through each spaced hole and formed in a loop to firmly encircle the hand grip and a prot... | 08/23/1977 |
| 3930460 | Water ski tow rope An arrangement for securing a braided rope to the ski tow rope handle by passing the rope through a transverse hole in the handle, passing the rope around the periphery of the handle and then inserting a portion of the end of the rope into the braided rop... | 01/06/1976 |
