US3862756A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetically attached baseball base
Assignee: Individual
•
Filing: 1974-01-02
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Granted: 1975-01-28
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Expires: 1994-01-02
Abstract
Abstract A first member is anchored in the ground and has a top flat surface mounted flush with the ground surface. A second member which serves as the base is resilient and has a bottom surface adapted to seat on the first member. Magnets and magnetically attracting plates are mounted in the two members to hold the latter together under normal playing conditions but to allow separation thereof under unusual conditions, Rib and groove means may also be employed to assist the magnet holding portion.
Inventors
- 👤 Conrad J Selliken
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 19:17
CPC Classifications
A; A63; A63B; A63B69/00; A63B69/0002; A63B69/0013; A63C; A63C19/00; A63C19/04; A63B2209/00; A63B2209/08
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
118 words
A baseball base comprising a. a first member having a top plate, b. means depending from said top plate arranged to anchor said plate in base position with the upper surface thereof substantially flush with the ground, c. a second member having a size and shape substantially corresponding to that of the usual baseball base portion, d. said second member having a bottom surface arranged to overlie the upper surface of said first member in its installed base position, e. and magnetic holding means in the upper surface of said first member and the bottom surface of said second member arranged to normally hold said two members together but to allow them to separate under unusual force conditions.
Claim 2
Dependent Claim
118 words
A baseball base comprising a. a first member having a top plate, b. means depending from said top plate arranged to anchor said plate in base position with the upper surface thereof substantially flush with the ground, c. a second member having a size and shape substantially corresponding to that of the usual baseball base portion, d. said second member having a bottom surface arranged to overlie the upper surface of said first member in its installed base position, e. and magnetic holding means in the upper surface of said first member and the bottom surface of said second member arranged to normally hold said two members together but to allow them to separate under unusual force conditions.
Claim 3
Dependent Claim
27 words
The baseball base of claim 1 wherein said magnetic holding means comprises permanent magnets in one of said members and magnetically attracting plates in the other member.
Claim 4
Dependent Claim
101 words
The baseball base of claim 2 wherein said permanent magnets have slidable mounting vertically in said first member and are arranged to project above the upper surface of said first member, the bottom of said second member having apertures aligned with said magnets in the installed position of the second member, and magnetically attracting plates in said apertures disposed above the bottom of said second member whereby in the installed position of the second member, said magnets project upwardly in said apertures into engagement with said plates to provide lateral holding of the two members in addition to the magnetic forces.
Claim 5
Dependent Claim
43 words
The baseball base of claim 1 including engaging rib and groove means in the upper surface of said first member and the bottom surface of said second member to assist the magnetic holding means in holding the two members together under usual conditions.
Claim 6
Dependent Claim
13 words
The baseball base of claim 1 wherein said second member is air cushioned.
References Cited (Backward Citations)
GB428287A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-01-27 | 1978-07-29 | 1979-01-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-01-27 | 1982-07-29 | 1983-01-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-01-27 | 1986-07-29 | 1987-01-28 | $7700.00 | Window Closed / Lapsed |