US4705273A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cushioned bat
Assignee: SPORTIME A DELAWARE LLC LLC
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Filing: 1985-09-24
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Granted: 1987-11-10
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Expires: 2005-09-24
Abstract
Abstract Cushioned baseball bats comprising a semi-rigid support structure and a resilient cushion portion surrounding at least a portion of the support structure are provided. The bats of this invention are of substantial enough weight and rigidity that they can be used in a game substantially similar to conventional baseball or softball, but the bats of this invention are less likely than conventional baseball bats (or bats designed to replace conventional bats) to cause serious injury when they strike a person. The bats of this invention are preferably used with lighter and softer balls so that a game that is substantially similar to conventional baseball or softball may be played with a reduced danger of serious injury.
Inventors
- 👤 Harold E. Ament
- 👤 Frederick G. Kirschner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 20:08
CPC Classifications
A; A63; A63B; A63B71/00; A63B71/0054; A63B59/00; A63B59/50; A63B60/00; A63B60/06; A63B60/10; A63B60/54; B; B29; B29C; B29C70/00; B29C70/68; B29C70/72; A63B59/58; A63B2059/581; A63B2071/0063; A63B2102/00; A63B2102/18; A63B2102/182; A63B2208/00; A63B2208/12; B29K; B29K2075/00; B29K2105/00; B29K2105/04; B29K2105/043; B29K2105/06; B29K2105/16; B29K2105/165; B29L; B29L2031/00; B29L2031/52; B29L2031/5227; C; C08; C08L; C08L75/00; C08L75/04; Y; Y10; Y10S; Y10S273/00; Y10S273/08
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
182 words
A cushioned bat having a lower end, a handle, a barrel, and an upper end, said cushioned bat comprising a semi-rigid support structure extending along the longitudinal axis of said bat and having a length substantially equal to the cushioned bat and a deformable, resilient cushion portion surrounding at least a portion of said support structure, said resilient cushion portion being formed of a polyurethane foam having a density from about 10 to about 30 pound mass per cubic foot, said cushioned bat having a length of 25 to 35 inches, a weight of 8 to 30 ounces, a surface hardness, as determined by the ASTM 2240-68 method, of from about 25 to about 50, an HA Compressibility of 5 to 50 pounds, and said support structure when tested according to ASTM D790 (modified) requiring a force of from about 75 to about 230 pounds to produce a deflection of 0.5 inch, said cushioned bat having the general shape of a conventional baseball or softball bat but being less likely to inflict serious injury when it comes in contact with a person.
Claim 2
Dependent Claim
182 words
A cushioned bat having a lower end, a handle, a barrel, and an upper end, said cushioned bat comprising a semi-rigid support structure extending along the longitudinal axis of said bat and having a length substantially equal to the cushioned bat and a deformable, resilient cushion portion surrounding at least a portion of said support structure, said resilient cushion portion being formed of a polyurethane foam having a density from about 10 to about 30 pound mass per cubic foot, said cushioned bat having a length of 25 to 35 inches, a weight of 8 to 30 ounces, a surface hardness, as determined by the ASTM 2240-68 method, of from about 25 to about 50, an HA Compressibility of 5 to 50 pounds, and said support structure when tested according to ASTM D790 (modified) requiring a force of from about 75 to about 230 pounds to produce a deflection of 0.5 inch, said cushioned bat having the general shape of a conventional baseball or softball bat but being less likely to inflict serious injury when it comes in contact with a person.
Claim 3
Dependent Claim
63 words
The bat of claim 1 wherein said bat measures from about 25 to about 29 inches in length and weighs from about 10 to about 15 ounces, and said support structure (a) is comprised of wood, and (b) when tested according to ASTM D790 (modified) requires a force of from about 75 to about 125 pounds to produce a deflection of 0.5 inch.
Claim 4
Dependent Claim
63 words
The bat of claim 1 wherein said bat measures from about 30 to about 34 inches in length and weighs from about 23 to about 27 ounces, and said support structure (a) is comprised of wood, and (b) when tested according to ASTM D790 (modified) requires a force of from about 75 to about 125 pounds to produce a deflection of 0.5 inch.
Claim 5
Dependent Claim
17 words
The bat of claim 1 wherein a skin is formed on the surface of said cushion portion.
Claim 6
Dependent Claim
17 words
The bat of claim 1 wherein said cushion portion forms a knob structure adjacent said lower end.
Claim 7
Dependent Claim
15 words
The bat of claim 5 wherein said knob structure is integral with said cushion portion.
Claim 8
Dependent Claim
19 words
The bat of claim 1 wherein said cushion portion substantially completely covers said support structure with a varying thickness.
Claim 9
Dependent Claim
14 words
The bat of claim 1 wherein said support structure comprises a substantially cylindrical shape.
Claim 10
Dependent Claim
17 words
The bat of claim 1 wherein said support structure has a variable circumference along its longitudinal axis.
Claim 11
Dependent Claim
20 words
The bat of claim 1 wherein cloth tape is wrapped about the outer surface of the handle of said bat.
Claim 12
Dependent Claim
27 words
The bat of claim 1 wherein said cushioned bat has a surface hardness, as determined by the ASTM 2240-68 method, of from about 30 to about 45.
Claim 13
Dependent Claim
21 words
The bat of claim 1 wherein said cushioned bat has an HA Compressibility of from about 5 to about 35 pounds.
Claim 14
Dependent Claim
16 words
The bat of claim 1 wherein said support structure comprises a tube filled with foamed material.
Claim 15
Dependent Claim
34 words
The bat of claim 1 wherein said support structure, when tested according to ASTM D790 (modified), requires a force of from about 75 to about 230 pounds to produce a deflection of 0.5 inch.
Claim 16
Dependent Claim
220 words
A cushioned bat having a lower end, a handle, a barrel, and an upper end, said cushioned bat comprising a semi-rigid support structure extending substantially the entire length of said bat along the longitudinal axis of said bat and a deformable, resilient cushion portion surrounding at least a portion of said support structure, said cushioned bat having a length of 25 to 29 inches, a weight of from about 10 to about 15 ounces, said support structure being (1) comprised of wood, and (2) when tested according to ASTM D790 (modified) requiring a force of from about 75 to about 125 pounds to produce a deflection of 0.5 inch, a surface hardness, as determined by the ASTM 2240-68 method, of from about 30 to about 45 and an HA Compressibility of from about 10 to about 30 pounds, said cushion portion comprising a polyurethane foam having a density of from about 10 to about 30 pound mass per cubic foot and forming an integral knob structure adjacent said lower end, said cushion portion completely enclosing said support structure, said cushion portion provided with a skin on the outside surface thereof, said cushioned bat having the general shape of a conventional baseball or softball bat but being less likely to inflict serious injury when it comes in contact with a person.
Claim 17
Dependent Claim
220 words
A cushioned bat having a lower end, a handle, a barrel, and an upper end, said cushioned bat comprising a semi-rigid support structure extending substantially the entire length of said bat along the longitudinal axis of said bat and a deformable, resilient cushion portion surrounding at least a portion of said support structure, said cushioned bat having a length of 25 to 29 inches, a weight of from about 10 to about 15 ounces, said support structure being (1) comprised of wood, and (2) when tested according to ASTM D790 (modified) requiring a force of from about 75 to about 125 pounds to produce a deflection of 0.5 inch, a surface hardness, as determined by the ASTM 2240-68 method, of from about 30 to about 45 and an HA Compressibility of from about 10 to about 30 pounds, said cushion portion comprising a polyurethane foam having a density of from about 10 to about 30 pound mass per cubic foot and forming an integral knob structure adjacent said lower end, said cushion portion completely enclosing said support structure, said cushion portion provided with a skin on the outside surface thereof, said cushioned bat having the general shape of a conventional baseball or softball bat but being less likely to inflict serious injury when it comes in contact with a person.
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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) | 1990-11-09 | 1991-05-11 | 1991-11-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-11-09 | 1995-05-11 | 1995-11-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-11-09 | 1999-05-11 | 1999-11-10 | $7700.00 | Window Closed / Lapsed |