Patent US4709916A successfully refreshed from Google Patents.
US4709916A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bowlers grip exerciser
Assignee: A-CO
•
Filing: 1986-03-10
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Granted: 1987-12-01
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Expires: 2006-03-10
Abstract
Abstract A finger, hand and wrist exercising device, for bowlers, having finger grips simulating the arrangement of the finger holes on a bowling ball. The grips are slidably disposed on the arcuate surface of the exerciser and are spring loaded against compression between the fingers and thumb. The exerciser has a rotatable hand grip knob on the bottom surface. The hand grip knob is loaded in torsion against rotation of the exerciser. The arcuate radius on the exerciser surface being the same as that of a bowling ball.
Inventors
- 👤 Dean Clark
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 20:13
CPC Classifications
A; A63; A63B; A63B23/00; A63B23/035; A63B23/12; A63B23/16
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
130 words
In a device for exercising a bowler's fingers, hand and wrist wherein the improvement comprises: a. an arcuate chord shaped casing having the same radius as a bowling ball; b. two slidable arcuate members with finger grips spring tensioned in the finger extended position; c. longitudinal slots in the arcuate casing for guiding the movement of the finger grips; d. a thumb grip on the arcuate casing; e. the position of the finger and thumb grips simulating the arrangement of the finger holes on a bowling ball; f. means for tensioning the movement of the finger grip members towards the thumb grip; g. a rotatable hand grip knob on the bottom of the exerciser; and, h. said rotatable hand grip knob spring tensioned in torsion with respect to the casing.
Claim 2
Dependent Claim
130 words
In a device for exercising a bowler's fingers, hand and wrist wherein the improvement comprises: a. an arcuate chord shaped casing having the same radius as a bowling ball; b. two slidable arcuate members with finger grips spring tensioned in the finger extended position; c. longitudinal slots in the arcuate casing for guiding the movement of the finger grips; d. a thumb grip on the arcuate casing; e. the position of the finger and thumb grips simulating the arrangement of the finger holes on a bowling ball; f. means for tensioning the movement of the finger grip members towards the thumb grip; g. a rotatable hand grip knob on the bottom of the exerciser; and, h. said rotatable hand grip knob spring tensioned in torsion with respect to the casing.
Claim 3
Dependent Claim
45 words
The exercising device as described in claim 1 wherein the improvement comprises: a. means for adjusting the tension springs restraining the movement of the finger grips from the extended position; and, b. means for adjusting the tension springs restraining rotation of the hand grip 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) | 1990-11-30 | 1991-06-01 | 1991-12-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-11-30 | 1995-06-01 | 1995-12-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-11-30 | 1999-06-01 | 1999-12-01 | $7700.00 | Window Closed / Lapsed |