US4804193A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Circuitry for electronic scoring dartboard
Assignee: AN WEI ENTERPRISE Co Ltd 174 CHING YUN RD TUCHENG TAIPEI HSIEN A CORP OF CHINA
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Filing: 1987-09-21
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Granted: 1989-02-14
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Expires: 2007-09-21
Abstract
Abstract An electronic dartboard which includes a circuit board having a plurality of contacts and a dart-engaging target assembly mounted in front of the circuit board. The target assembly has a plurality of individual scoring blocks. Each block has at least one stem rearwardly protruding towards the circuit board. A conductor point and a buffer ring are provided at the back end of the stem. The buffer ring spaces the conductor point from the contact point. When a dart is thrown on the dartboard the buffer ring deforms engaging the conductor point with the contact point.
Inventors
- 👤 Jui S. Lin
- 👤 Daniel Lin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 04:21
CPC Classifications
F; F41; F41J; F41J3/00; F41J3/0009; F41J3/0061; F41J3/0066; F41J5/00; F41J5/04; F41J5/052
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
133 words
An electronic dartboard structure which includes a circuit board having a surface provided with a plurality of contact points, a dart-engaging target assembly mounted on the circuit board, said assembly including a plurality of scoring blocks, each block having at least one rearwardly protruding stem with a back end provided with a conductor point and a buffer ring on the back end of the stem, the buffer ring having an inner end secured to the stem surrounding the conductor point, the buffer ring further having an outer end resting on the circuit board surrounding one of said contact points, the buffer ring spacing the conductor point from the contact point and being deformable to allow engagement of the conductor point with the contact point when the scoring block is impacted by a dart.
Claim 2
Dependent Claim
133 words
An electronic dartboard structure which includes a circuit board having a surface provided with a plurality of contact points, a dart-engaging target assembly mounted on the circuit board, said assembly including a plurality of scoring blocks, each block having at least one rearwardly protruding stem with a back end provided with a conductor point and a buffer ring on the back end of the stem, the buffer ring having an inner end secured to the stem surrounding the conductor point, the buffer ring further having an outer end resting on the circuit board surrounding one of said contact points, the buffer ring spacing the conductor point from the contact point and being deformable to allow engagement of the conductor point with the contact point when the scoring block is impacted by a dart.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-02-14 | 1992-08-15 | 1993-02-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-02-14 | 1996-08-15 | 1997-02-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-02-14 | 2000-08-15 | 2001-02-14 | $7700.00 | Window Closed / Lapsed |