US3597860A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Teaching aid
Assignee: Individual
•
Filing: 1969-10-06
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Granted: 1971-08-10
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Expires: 1989-10-06
Abstract
Abstract A teaching aid for teaching decay-growth phenomenon. Polyhedrons representing a parent isotope and having at least one distinctively marked face are thrown, and those having a distinctively marked face up are replaced by other pieces which may be marked to serve as a daughter isotope or may be unmarked to serve as the stable atoms. Data is taken after each throw and replacement, and plotted, whereby decay-growth curves are obtained. A throwing tray with a nested storage tray are provided for containing the polyhedrons.
Inventors
- 👤 Achille Capecelatro
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 18:40
CPC Classifications
G; G09; G09B; G09B23/00; G09B23/26
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
178 words
A teaching aid for studying decay-growth phenomenon by experiments involving throwing polyhedron pieces having distinctively marked faces and representing the parent state, and selectively removing from the thrown parent polyhedrons, according to a predetermined rule involving the position of the said distinctively marked faces, part of the thrown polyhedrons, and replacing the removed polyhedrons by other pieces representing a decay state and visually distinguishable from the first-mentioned polyhedrons, comprising: a. a throwing tray having a bottom and sides for the throwing of the pieces, b. a storage tray having a storage area for the parent polyhedrons and a storage area for the decay pieces each of said storage areas having consecutively numbered upwardly opening recesses, said numbering beginning with one and each recess being for receiving a bottom portion of one piece, the number of said recesses for the parent and decay pieces, respectively, equaling the number of parent and decay pieces, said storage tray being nested in the throwing tray and manually removable therefrom, c. parent and decay pieces for being seated in the storage tray recesses,
Claim 2
Dependent Claim
178 words
A teaching aid for studying decay-growth phenomenon by experiments involving throwing polyhedron pieces having distinctively marked faces and representing the parent state, and selectively removing from the thrown parent polyhedrons, according to a predetermined rule involving the position of the said distinctively marked faces, part of the thrown polyhedrons, and replacing the removed polyhedrons by other pieces representing a decay state and visually distinguishable from the first-mentioned polyhedrons, comprising: a. a throwing tray having a bottom and sides for the throwing of the pieces, b. a storage tray having a storage area for the parent polyhedrons and a storage area for the decay pieces each of said storage areas having consecutively numbered upwardly opening recesses, said numbering beginning with one and each recess being for receiving a bottom portion of one piece, the number of said recesses for the parent and decay pieces, respectively, equaling the number of parent and decay pieces, said storage tray being nested in the throwing tray and manually removable therefrom, c. parent and decay pieces for being seated in the storage tray recesses,
Claim 3
Dependent Claim
26 words
A teaching aid according to claim 1, some of the pieces having removable distinctive markings, whereby distinctive markings can be changed to change a probability factor.
Claim 4
Dependent Claim
34 words
A teaching aid according to claim 1, and a marker for marking pieces to impart said distinctive marking thereto, and means for storing the marker in association with the throwing tray and storage tray.
Claim 5
Dependent Claim
30 words
A teaching aid according to claim 1, the parEnt polyhedron pieces and the decay pieces being different colors and the respective storage areas being colored the same as pieces therefor.
Claim 6
Dependent Claim
22 words
A teaching aid according to claim 1, said consecutive numbering being replaceable, permitting modifying the number of pieces used in the studying.
Claim 7
Dependent Claim
63 words
A teaching aid according to claim 1, said cover for the throwing tray having downwardly opening recesses, each of the cover recesses being for receiving an upper portion of a piece, whereby the upwardly opening and downwardly opening recesses can cooperate to secure the pieces in fixed locations in the storage tray, said recesses of the cover imparting thereto said rough inner surface.
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) | 1974-08-09 | 1975-02-08 | 1975-08-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-09 | 1979-02-08 | 1979-08-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-09 | 1983-02-08 | 1983-08-10 | $7700.00 | Window Closed / Lapsed |