Patent US3836148A successfully refreshed from Google Patents.
US3836148A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotatable dart board, magnetic darts and magnetic scoring switches
Assignee: Individual
•
Filing: 1974-01-11
•
Granted: 1974-09-17
•
Expires: 1994-01-11
Abstract
Abstract An automatic scoring dartboard apparatus utilizing darts having magnets attached thereto for throwing at a dart board. The dart board is rotatably mounted to a frame and is driven by an electric motor rotating the dart board at a slow speed. A plurality of magnetic actuatable switches are located behind the rotating dart board in alignment with the scoring rings of the dart board so that the magnets and the darts will be rotated by one switch thereby actuating the switch which actuates the score in the visual display.
Inventors
- 👤 V Manning
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 10:41
CPC Classifications
F; F41; F41J; F41J3/00; F41J3/0009; F41J3/0033; F41J3/0052; F41J5/00; F41J5/04; Y; Y10; Y10S; Y10S273/00; Y10S273/30
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
136 words
An automatic scoring dart board apparatus comprising in combination: a. darts having magnets attached thereto; b. a rotatable dart board having scoring rings thereon; c. rotation actuation means operatively connected to said dart board for rotating said dart board when actuated; d. a plurality of magnetic actuatable switches located in close juxtaposition to said dart board and being actuatable by said magnets attached to said darts when said darts are attached to said dart board, at least one switch aligned with each scoring ring on said target to indicate a score when actuated by said magnet in said dart rotating on said rotating dart board past said switch; and e. score indication means operatively connected to said switch to visually indicate the score of at least one player, whereby a dart game may be scored automatically.
Claim 2
Dependent Claim
136 words
An automatic scoring dart board apparatus comprising in combination: a. darts having magnets attached thereto; b. a rotatable dart board having scoring rings thereon; c. rotation actuation means operatively connected to said dart board for rotating said dart board when actuated; d. a plurality of magnetic actuatable switches located in close juxtaposition to said dart board and being actuatable by said magnets attached to said darts when said darts are attached to said dart board, at least one switch aligned with each scoring ring on said target to indicate a score when actuated by said magnet in said dart rotating on said rotating dart board past said switch; and e. score indication means operatively connected to said switch to visually indicate the score of at least one player, whereby a dart game may be scored automatically.
Claim 3
Dependent Claim
27 words
The dart board in accordance with claim 1 including a frame having said rotating actuating means attached thereto for supporting said actuating means and said dart board.
Claim 4
Dependent Claim
17 words
A dart board in accordance with claim 2 in which said magnetically operated switches are reed switches.
Claim 5
Dependent Claim
39 words
Dart board in accordance with claim 3 in which the sensitivity of said reed switches is adjusted by a plurality of permanent magnets, one said magnet located on the opposite side of each reed switch from said dart board.
Claim 6
Dependent Claim
53 words
Dart board in accordance with claim 4 in which said permanent magnets are attached to a threaded member which is threaded into a frame member whereby rotation of said magnets will move said magnets to vary the distance between said magnets and said reed switches for adjusting the sensitivity of said reed switches.
Claim 7
Dependent Claim
18 words
The apparatus in accordance with claim 5 in which said adjustable permanent magnets are separated by metal plates.
Claim 8
Dependent Claim
23 words
The apparatus in accordance with claim 6 in which said reed switches are located in a line one switch for each scoring ring.
Claim 9
Dependent Claim
36 words
The apparatus in accordance with claim 7 in which said actuation means is an electric motor having an elongated shaft attached to said dart board for rotating said dart board when said electric motor is actuated.
Claim 10
Dependent Claim
23 words
The apparatus in accordance with claim 3 in which said reed switches actuate lamps indicating the particular scoring ring hit by a dart.
Claim 11
Dependent Claim
30 words
The apparatus in accordance with claim 9 in which said reed switches are connected to a digital electronic scoring circuit having a readout display indicating the score of a player.
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) | 1977-09-16 | 1978-03-18 | 1978-09-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-09-16 | 1982-03-18 | 1982-09-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-09-16 | 1986-03-18 | 1986-09-17 | $7700.00 | Window Closed / Lapsed |