Patent FR793530A successfully refreshed from Google Patents.
US4192084A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Atomic model
Assignee: Individual
•
Filing: 1975-09-11
•
Granted: 1980-03-11
•
Expires: 1995-09-11
Abstract
Abstract A teaching aid which has a display board and a number of discs having symbols printed thereon and magnets for attaching the discs to the display board. The teaching aid is particularly directed towards the teaching of chemistry and the discs have printed thereon atomic or ionic symbols and can be so used to display the theory of chemical bonding or construction of a nucleus.
Inventors
- 👤 Sean S. O'Riordan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 00:18
CPC Classifications
G; G09; G09B; G09B1/00; G09B1/02; G09B1/04; G09B1/06; G09B1/08; G09B23/00; G09B23/24; G09B23/26
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
131 words
A teaching aid comprising: a display board; a circular disc having a symbol printed thereon; means for attaching said disc to said board; said display board and said disc being comprised of magnetic material, said circular disc being held to said display board by magnetic means, said disc having a chemical symbol printed thereon; at least one ring held on said disc and surrounding said disc, said ring having a cut-out embracing said circular disc, said ring having a concentric circle printed thereon and having holes, pins inserted into said holes for denoting electrons in orbit, said disc comprising a magnet and cooperating with said ring for displaying possible chemical structures of compounds, said ring displaying electrons in orbit about said disc, said disc corresponding to the nucleus of an atom.
Claim 2
Dependent Claim
131 words
A teaching aid comprising: a display board; a circular disc having a symbol printed thereon; means for attaching said disc to said board; said display board and said disc being comprised of magnetic material, said circular disc being held to said display board by magnetic means, said disc having a chemical symbol printed thereon; at least one ring held on said disc and surrounding said disc, said ring having a cut-out embracing said circular disc, said ring having a concentric circle printed thereon and having holes, pins inserted into said holes for denoting electrons in orbit, said disc comprising a magnet and cooperating with said ring for displaying possible chemical structures of compounds, said ring displaying electrons in orbit about said disc, said disc corresponding to the nucleus of an atom.
Claim 3
Dependent Claim
101 words
A teaching aid comprising: a display board; a disc having a symbol printed thereon; means for attaching the disc to the board; said disc being of a shape which is selected from the symbols consisting of those having atomic, ionic, biological, geographical, historical and musical significance; additional discs in the form of rings, each of said rings having a cut-out inner portion for embracing the circular disc, each of said rings having a concentric circle printed thereon and holes for the reception of pins, said holes showing in conjunction with the concentric circles the occupancy of various rings about an atom.
Claim 4
Dependent Claim
101 words
A teaching aid comprising: a display board; a disc having a symbol printed thereon; means for attaching the disc to the board; said disc being of a shape which is selected from the symbols consisting of those having atomic, ionic, biological, geographical, historical and musical significance; additional discs in the form of rings, each of said rings having a cut-out inner portion for embracing the circular disc, each of said rings having a concentric circle printed thereon and holes for the reception of pins, said holes showing in conjunction with the concentric circles the occupancy of various rings about an atom.
References Cited (Backward Citations)
US1100362A
Cited
US2864275A
Cited
GB805364A
Cited
US3365815A
Cited
US3423846A
Cited
US3414987A
Cited
US3846214A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-03-11 | 1983-09-10 | 1984-03-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-03-11 | 1987-09-10 | 1988-03-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-03-11 | 1991-09-10 | 1992-03-11 | $7700.00 | Window Closed / Lapsed |