US5094453A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ball bat with inward off-set center of gravity
Assignee: Individual
•
Filing: 1990-07-25
•
Granted: 1992-03-10
•
Expires: 2010-07-25
Abstract
Abstract A ball bat having a bat handle, a handle end of the bat, a bat head, a center of gravity and weights on the bat handle end for offsetting the center of gravity in the direction of the handle end. The bat also may have grooves in the bat wall to lighten the bat head, and an inward projecting acorn-shaped weight at the handle end.
Inventors
- 👤 Preston L. Douglas
- 👤 William J. Prosser
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 11:17
CPC Classifications
A; A63; A63B; A63B59/00; A63B59/50; A63B59/51; A63B60/00; A63B60/02; A63B60/06; A63B60/16; A63B60/22; A63B60/24; A63B69/00; A63B69/0002; A63B2069/0004; A63B2069/0008; A63B2102/00; A63B2102/18; A63B60/54
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
76 words
A ball bat comprising a tubular body having a head end; a tapered handle end; walls formed of aluminum alloy of a given thickness; a center of gravity; an acorn-shaped knob on said handle end, having a hollow extension projecting away from said handle end; and weighting means disposed in said hollow extension for shifting the center of gravity toward said handle end; said walls of said head end having internal reinforcing circular grooves formed therein.
Claim 2
Dependent Claim
76 words
A ball bat comprising a tubular body having a head end; a tapered handle end; walls formed of aluminum alloy of a given thickness; a center of gravity; an acorn-shaped knob on said handle end, having a hollow extension projecting away from said handle end; and weighting means disposed in said hollow extension for shifting the center of gravity toward said handle end; said walls of said head end having internal reinforcing circular grooves formed therein.
Claim 3
Dependent Claim
38 words
A ball bat according to claim 1, including reinforcing means disposed in said head end of the bat for reinforcing said head end, said reinforcing means including a plurality of foam discs tightly fitting in said head end.
Claim 4
Dependent Claim
13 words
A ball bat according to claim 1, wherein said weighting means include lead.
Claim 5
Dependent Claim
48 words
A ball bat according to claim 2, wherein said means for reinforcing said head end include a core of structural foam in said head end, wherein said core of structural foam is divided into discs and wherein said discs are disposed perpendicular to the axis of said bat.
Claim 6
Dependent Claim
12 words
A ball bat according to claim 4 wherein said discs are stacked.
Claim 7
Dependent Claim
18 words
A ball bat according to claim 1, including weld means for attaching said acorn-shaped knob to said handle.
Claim 8
Dependent Claim
23 words
A ball bat according to claim 1 wherein said acorn-shaped knob includes a circular disc section projecting radially away from said tubular body.
Claim 9
Dependent Claim
17 words
A ball bat according to claim 7, wherein said circular disk section is made of solid metal.
Claim 10
Dependent Claim
19 words
A ball bat according to claim 8, wherein said circular disk section is threadedly attached to said handle end.
Claim 11
Dependent Claim
21 words
A ball bat according to claim 7, wherein said disk section is hollow and filled with lead or other weighting materials.
Claim 12
Dependent Claim
39 words
A ball bat according to claim 1, wherein said weighting means have a weight such that the center of gravity is located a distance of up to 75% of the length of said tubular body from said acorn-shaped knob.
Claim 13
Dependent Claim
28 words
A ball bat according to claim 1, including a weighted friction lining attached externally to said handle end that can extend a maximum of 18" from the knob.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-03-10 | 1995-09-09 | 1996-03-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-03-10 | 1999-09-09 | 2000-03-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-03-10 | 2003-09-09 | 2004-03-10 | $7700.00 | Window Closed / Lapsed |