US3764145A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Space travel game using magnets to simulate the pull of gravity
Assignee: Lee Raymond Organization Inc
•
Filing: 1972-10-19
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Granted: 1973-10-09
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Expires: 1992-10-19
Abstract
Abstract A game comprising a first flat horizontal rectangular nonmagnetic sheet; first and second ring magnets overlying the first sheet and disposed adjacent opposite ends; first and second disc magnets disposed in the centers of the corresponding first and second ring magnets; a second horizontal non-magnetic sheet overlying the magnets; at least one magnetic body lying movably on the top of the second sheet; a third horizontal non-magnetic sheet disposed above the magnetic body; and at least one bar magnet slidable along the third sheet.
Inventors
- 👤 F Schrafft
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 15:52
CPC Classifications
A; A63; A63F; A63F9/00; A63F9/34; A63F9/0076; A63F3/00; A63F3/00003; A63F3/00088; A63F3/00091
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
83 words
A game comprising: a first flat horizontal rectangular non-magnetic sheet; first and second ring magnets overlying the first sheet and disposed adjacent opposite ends; first and second disc magnets disposed in the centers of the corresponding first and second ring magnets; a second horizontal non-magnetic sheet overlying the magnets; at least one magnetic body lying movably on top of the second sheet; a third horizontal non-magnetic sheet disposed above the magnetic body; and at least one bar magnet slidable along the third sheet.
Claim 2
Dependent Claim
83 words
A game comprising: a first flat horizontal rectangular non-magnetic sheet; first and second ring magnets overlying the first sheet and disposed adjacent opposite ends; first and second disc magnets disposed in the centers of the corresponding first and second ring magnets; a second horizontal non-magnetic sheet overlying the magnets; at least one magnetic body lying movably on top of the second sheet; a third horizontal non-magnetic sheet disposed above the magnetic body; and at least one bar magnet slidable along the third sheet.
Claim 3
Dependent Claim
11 words
The game of claim 1 wherein said body is a magnet.
Claim 4
Dependent Claim
12 words
The game of claim 1 wherein the body is a magnetic sphere.
Claim 5
Dependent Claim
36 words
The game of claim 1 wherein each ring magnet-disc magnet pair rests on a non-magnetic base which can be removed from the first sheet and replaced by another pair of like geometry but different magnetic strengths.
References Cited (Backward Citations)
US1225787A
Cited
US1988071A
Cited
US2975551A
Cited
US2995372A
Cited
US3214171A
Cited
US3658338A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-10-08 | 1977-04-09 | 1977-10-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-08 | 1981-04-09 | 1981-10-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-08 | 1985-04-09 | 1985-10-09 | $7700.00 | Window Closed / Lapsed |