US4915669A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ball with swingable internal weight
Assignee: Pressers International Products Inc
•
Filing: 1989-03-17
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Granted: 1990-04-10
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Expires: 2009-03-17
Abstract
Abstract A ball having an outer chamber and a first center of volume contains an inner chamber which is substantially smaller than the outer chamber. The inner chamber has a body portion and a neck portion, the neck portion extending between the body portion and the outer skin of the outer chamber. The neck portion is the only connection between the inner and outer chambers and comprises a flexible tube for permitting the inner chamber to swing back and forth within the outer chamber about the connection. The inner chamber contains a selected amount of a medium much denser than air and when the ball is in use the ball has eccentric and unpredictable flight characteristics.
Inventors
- 👤 Gordon K. Russell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 20:10
CPC Classifications
A; A63; A63B; A63B43/00; A63B43/04
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
146 words
A ball comprising an outer chamber having an outer skin and a first center of volume, an inner chamber, the inner chamber being substantially smaller than the outer chamber and being contained therein, the inner chamber having a second center of volume displaced from said first center of volume, the inner chamber having a body portion and a neck portion, the neck portion extending between the body portion and the outer skin, the neck portion being the only connection between said inner and outer chambers and being flexible for permitting said inner chamber to swing back and forth within said outer chamber about said connection between said inner and outer chambers when said ball is in use, said outer chamber containing air and said inner chamber containing a selected amount of a medium much denser than air, whereby said ball has eccentric and unpredictable flight characteristics.
Claim 2
Dependent Claim
146 words
A ball comprising an outer chamber having an outer skin and a first center of volume, an inner chamber, the inner chamber being substantially smaller than the outer chamber and being contained therein, the inner chamber having a second center of volume displaced from said first center of volume, the inner chamber having a body portion and a neck portion, the neck portion extending between the body portion and the outer skin, the neck portion being the only connection between said inner and outer chambers and being flexible for permitting said inner chamber to swing back and forth within said outer chamber about said connection between said inner and outer chambers when said ball is in use, said outer chamber containing air and said inner chamber containing a selected amount of a medium much denser than air, whereby said ball has eccentric and unpredictable flight characteristics.
Claim 3
Dependent Claim
11 words
The ball of claim 1 wherein said outer chamber is inflatable.
Claim 4
Dependent Claim
23 words
The ball of claims 1 or 2 wherein said outer chamber includes a first resealable orifice, and said outer chamber is generally spherical.
Claim 5
Dependent Claim
23 words
The ball of claims 1 or 2 where said outer chamber includes a first resealable orifice, and said outer chamber is generally spherical.
Claim 6
Dependent Claim
38 words
The ball of claim 1 wherein said outer chamber is inflatable, generally spherical, and includes a first resealable orifice, and said connection between said inner chamber and said outer chamber is located diametrically opposite said first resealable orifice.
Claim 7
Dependent Claim
49 words
The inflatable ball of claims 1 or 5, wherein said outer skin of said outer chamber is formed from a plurality of panels, formed from polyvinyl plastic, each of said panels being fastened along their respective side edges to adjacent panels to form said generally spherical outer inflatable chamber.
Claim 8
Dependent Claim
15 words
The ball of claim 5 further including a plug for sealing said first resealable orifice.
Claim 9
Dependent Claim
24 words
The ball of claim 1, 5 or 7 wherein said outer chamber and said inner chamber are both made from thin flexible plastic material.
References Cited (Backward Citations)
US495863A
Cited
CA351282A
Cited
US1383115A
Cited
US1595441A
Cited
DE558123C
Cited
US2387433A
Cited
US2505526A
Cited
US2625770A
Cited
US2635387A
Cited
DE829109C
Cited
US2927383A
Cited
US2937872A
Cited
GB843977A
Cited
GB893680A
Cited
US3163419A
Cited
US3655197A
Cited
US3734498A
Cited
US4103889A
Cited
SU704632A1
Cited
CA1159744A
Cited
US4223474A
Cited
CA1117156A
Cited
US4448418A
Cited
US4609196A
Cited
US4655722A
Cited
US4842563A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-04-09 | 1993-10-09 | 1994-04-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-04-09 | 1997-10-09 | 1998-04-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-04-09 | 2001-10-09 | 2002-04-10 | $7700.00 | Window Closed / Lapsed |