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| US4196524 | 16 mai 1978 | 8 avr. 1980 | | Head movement indicating device |
| US4330123 | 30 sept. 1980 | 18 mai 1982 | | Devices and methods for improving bowling skills |
| US4392830 | 27 oct. 1981 | 12 juil. 1983 | | Body coordination training aid |
| US4560166 | 27 nov. 1984 | 24 déc. 1985 | | Golfer's head movement indicating device |
| US4743028 | 17 janv. 1986 | 10 mai 1988 | | Golf swing practice device |
| US4958145 | 5 mai 1989 | 18 sept. 1990 | Safety Operating Systems, Inc. | Back incline indicator |
| US5108104 | 29 avr. 1991 | 28 avr. 1992 | | Training device for golfer |
| US5300921 | 13 nov. 1992 | 5 avr. 1994 | Rhys Resources Ins. | Athletic training system |
| US5338036 | 9 juin 1993 | 16 août 1994 | Universal System Control, Inc. | Golf exercising aid device |
| US5394888 | 17 déc. 1992 | 7 mars 1995 | | Arthrometer with gravity switches and adjustable limit signaling |
| US5398019 | 22 déc. 1993 | 14 mars 1995 | Larry W. Barnett | Portable sensor for detecting bends of the back of a person past a predetermined lumbosacral angle |
| US5430435 | 22 déc. 1993 | 4 juil. 1995 | Rhys Resources | Adjustable athletic training system |
| US5471951 | 26 sept. 1994 | 5 déc. 1995 | | Pest deterrent for tray-style bird feeder responsive to tilting of feeder |
| US5553857 | 6 déc. 1993 | 10 sept. 1996 | | Physical activity training device and method |
| US5586559 | 6 mars 1995 | 24 déc. 1996 | | Arthrometer with gravity switches and adjustable limit signaling |
| US5607361 | 18 nov. 1994 | 4 mars 1997 | Back Swing Management, Inc. | Electronic device for signaling wrist position during a golfer's swing |
| US5630764 | 5 mars 1996 | 20 mai 1997 | | Illuminated golf club head |
| US6001023 | 23 sept. 1997 | 14 déc. 1999 | Richard D. Sanchez
Gunther H. Steen | Angle activated training device for golfers |
