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| US4895368 | 2 Nov 1988 | 23 Jan 1990 | | Golf club and assembly process |
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| US5540625 | 27 Jul 1995 | 30 Jul 1996 | | Pneumatically enhanced golf clubs |
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| US6019687 | 25 Jun 1998 | 1 Feb 2000 | | Golf club having a hollow air filled head |
| US6053827 | 20 Feb 1997 | 25 Apr 2000 | Hillerich & Bradsby Co. | Metal bat with pressurized bladder in hitting zone and method of making same |
| US6354958 | 11 Apr 2000 | 12 Mar 2002 | | Vibration damper for a golf club |
| US6994641 | 24 Mar 2004 | 7 Feb 2006 | Jas. D. Easton, Inc. | Object striking implement vibration damping |
| US7226365 | 10 Dec 2004 | 5 Jun 2007 | | Shaft structure with adjustable and self-regulated stiffness |
| US7399235 | 1 Dec 2006 | 15 Jul 2008 | Eaton Corporation | Variable mass grip |
| US7458903 | 8 Jun 2006 | 2 Dec 2008 | Eaton Corporation | Hand grip and method of making same |
| US7798912 | 17 Sep 2007 | 21 Sep 2010 | Eaton Corporation | Variable hardness hand grip |
| US7909705 | 17 Apr 2008 | 22 Mar 2011 | Eaton Corporation | Variable mass grip |
| US8105522 | 29 Oct 2008 | 31 Jan 2012 | Eaton Corporation | Compression mold and molding process |
| USD395068 | 6 Sep 1996 | 9 Jun 1998 | United Sports Technologies, Inc. | Integral butt cap and fragmented handle for a flared golf shaft |
| USRE31811 | 10 Aug 1981 | 22 Jan 1985 | | Baseball bat with modified internal air pressure |
