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| Number | Title | Issue Date |
| 4954112 | Flipper for flipper swimming A flipper for flipper swimming having a varying thickness blade of resin sheets of varying length stratified sheets interposed between longer resin sheets and a natural rubber shoe hot pressed to the blade.... | 09/04/1990 |
| 4954111 | Swimming flipper made of two different materials The invention refers to a swimming flipper of the type with a "shoe" part (10) made of relatively soft material and a blade part (20), made of relatively stiffer material, suitably joined to one another and preferably formed with the first part on top of ... | 09/04/1990 |
| 4952183 | Collapsible propulsion aids for swimmer's feet A flipper-type swimming propulsion aid assembly for attachment to the feet of a swimmer to increase the swimmer's effective foot area. The swimming aid for each foot includes a collapsible frame of generally isosceles triangular configuration having side ... | 08/28/1990 |
| 4948385 | Training fin device for swimming Disclosed herein is a training fin for swimming which includes a foot section having an enclosure for retaining a user's foot in the fin and a tail section attached to the foot section. The tail section has a surface area of approximately between 0.5 and ... | 08/14/1990 |
| 4944703 | Swim fin having multiple articulating transverse hydrofoil blades A swim fin includes a foot receptacle for attaching to a swimmer or diver's foot. A pair of parallel beam supports are secured to the foot and toe portion of the foot receptacle and support a plurality of hydrofoil blades therebetween in a pivotal attachm... | 07/31/1990 |
| 4940437 | Swim fin with harness A swim fin includes harness for attachment to a wearer's foot, the harness including an adjustable strap secured to the fin on opposite sides of a forward portion of the wearer's foot, the adjustable strap forming an X configuration passing over the weare... | 07/10/1990 |
| 4907519 | Propulsion aids for attachment to a swimmer's feet A flipper-type swimming propulsion aid assembly for attachment to the feet of a swimmer to increase the swimmer's effective foot area. The swimming aid for each foot includes a dismantlable frame of generally isosceles triangular configuration having side... | 03/13/1990 |
| 4889510 | Harness for swim fins Harness for securing a swim fin beneath a wearer's foot is disclosed including two strap portions having respective front and rear anchor points on opposite sides of the fin relative to the wearer's foot, the strap portions forming an X configuration and ... | 12/26/1989 |
| 4869696 | Swim fin A swim fin having a rigid blade that has the center portion of its leading edge pivotally attached to two beams which project forwardly from the foot pocket. The rigid blade pivots freely for part of its angular movement. The swim fin is designed not to s... | 09/26/1989 |
| 4867720 | Swimmer's propulsion enhancer and training device and method A device and method for swimmers to enhance propulsion from the swimmer's kick. The device resists flexure of the swimmer's knees by providing a first band secured typically to the thigh, a second band secured typically to the lower leg, and a flexurally ... | 09/19/1989 |
| 4828521 | Swimmer's propulsion enhancer and training device and method A device and method for swimmers to enhance propulsion from the winner's kick. The device resists flexure of the swimmer's knees by providing a first band secured typically to the thigh, a second band secured typically to the lower leg, and a flexurally r... | 05/09/1989 |
| 4787871 | Water surface running fins for the feet These water running fins are designed to be worn on a person's feet to enable the user to effectively run on the surface of a body of water. Primarily, the fin consists of a main body with a foot receiving member attached, and the main body is provided wi... | 11/29/1988 |
| 4781637 | Swimming apparatus A swimming aid, comprising a transverse fin attachable to the feet of a swimmer and formed of a resilient material so as to twist in swimming, is disclosed. In a preferred embodiment, the fin comprises a stiffening member, to control its shape while twist... | 11/01/1988 |
| 4664639 | Tube Fisherman's foot fin A tube Fisherman's foot fin is made of resilient material with one end attached to a shoe and a free end extending backward over the heel and a substantial distance behind the shoe; so that when the foot is extended forward the fin exerts little resistanc... | 05/12/1987 |
| 4599071 | Adjustable beach-shoes The improvement provided by this invention is directed at the conventional beach-shoe and diving flipper, and according to this invention, a novel beach-shoe capable of acting as a diving flipper is provided. The web portion is extensible relative to a sh... | 07/08/1986 |
| 4342558 | Hydrofoil swim fin assemblies Hydrofoil swim fin assemblies, each assembly comprising a streamlined foot housing and a separate hydrofoil blade mechanism which is pivotably connected to the foot housing so that by rotation the angle of attack of the blade is reversed between each up a... | 08/03/1982 |
| 4310938 | Swimming shoe for breast stroke The present swimming shoe is intended for use in connection with breast stroke swimming as opposed to other types of swim strokes. For this purpose the body of the present swimming shoe has a cavity for receiving a swimmer's foot and a bottom or sole as w... | 01/19/1982 |
| 4250584 | Collapsable swim fin A collapsable swim fin includes a frame, a nonrigid blade or propulsion web, and tension members pivotally connected to the frame. The frame includes two slender, semirigid members extending forwardly from a swimmer's foot. The tensioning members include ... | 02/17/1981 |
