Patent US3854729A successfully refreshed from Google Patents.
US3854729A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Record divider and preservative
Assignee: Individual
•
Filing: 1973-06-01
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Granted: 1974-12-17
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Expires: 1993-06-01
Abstract
Abstract A substantially circular disc is disclosed for insertion between phonograph records prior to stacking the records on the spindle of a record player. The disc aids in the preservation of phonograph records in that it enables a person to operate the automatic changer without scratching or marring the record when it is dropped to the platter. A ring is releasably attached to the disc to make said disc readily adaptable for use with 45 r.p.m. records. For use with 33 1/3 r.p.m. records, the ring may be easily detached; or in the alternative, the disc may be inverted so that the ring is on the bottom side of the disc, as the disc is being placed on the spindle, for convenient adaptation to long playing records.
Inventors
- 👤 T Downs
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 22:25
CPC Classifications
G; G11; G11B; G11B17/00; G11B17/02; G11B17/022; G11B17/028; G11B17/0281; Y; Y10; Y10S; Y10S428/00; Y10S428/90; Y10T; Y10T428/00; Y10T428/21; Y10T428/218
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
308 words
An annular protective disc for use with 45 r.p.m. records for insertion between said records prior to stacking the records on the spindle of a record player, while said disc is substantially the same in circumference as a 45 r.p.m. record, said disc having a radially innermost portion and a radially outermost portion in concentric relationship therewith, said radially outermost portion coextensive with the sound groove zone of a 45 r.p.m. record, comprising: a layer of annular sheet stock of magnetic material coextensive with the diameter of said disc, having a centrally disposed aperture adapted to receive the spindle of a record player, said aperture similar to the size of the aperture in a long playing record, cushioning material secured to the top and bottom of the radially outermost portion, to protect said sound groove zone, an annular magnetic ring, having an outer circumference slightly less than the circumference of the central aperture of a 45 r.p.m. record, said ring adapted to fit within said central aperture in a close juxtaposition relationship to the circumference of said aperture, wherein the bottom end of said magnetic ring is concentrically mounted with respect to the aperture of the sheet stock, to prevent lateral or longitudinal displacement of the 45 r.p.m. record, said magnetic ring having an inner diameter of approximately 1/2 inch, and having the requisite strength and thickness to secure a 45 r.p.m. record to said protective disc by means of magnetic attraction when the 45 r.p.m. record is placed on said spindle intermediate the top end of said magnetic ring and said protective disc, the thickness of said magnetic ring being greater than the combined thickness of said cushionIng material and said 45 r.p.m. record, so that said top end of said magnetic ring is higher than the level of the label area of said 45 r.p.m. record.
Claim 2
Dependent Claim
308 words
An annular protective disc for use with 45 r.p.m. records for insertion between said records prior to stacking the records on the spindle of a record player, while said disc is substantially the same in circumference as a 45 r.p.m. record, said disc having a radially innermost portion and a radially outermost portion in concentric relationship therewith, said radially outermost portion coextensive with the sound groove zone of a 45 r.p.m. record, comprising: a layer of annular sheet stock of magnetic material coextensive with the diameter of said disc, having a centrally disposed aperture adapted to receive the spindle of a record player, said aperture similar to the size of the aperture in a long playing record, cushioning material secured to the top and bottom of the radially outermost portion, to protect said sound groove zone, an annular magnetic ring, having an outer circumference slightly less than the circumference of the central aperture of a 45 r.p.m. record, said ring adapted to fit within said central aperture in a close juxtaposition relationship to the circumference of said aperture, wherein the bottom end of said magnetic ring is concentrically mounted with respect to the aperture of the sheet stock, to prevent lateral or longitudinal displacement of the 45 r.p.m. record, said magnetic ring having an inner diameter of approximately 1/2 inch, and having the requisite strength and thickness to secure a 45 r.p.m. record to said protective disc by means of magnetic attraction when the 45 r.p.m. record is placed on said spindle intermediate the top end of said magnetic ring and said protective disc, the thickness of said magnetic ring being greater than the combined thickness of said cushionIng material and said 45 r.p.m. record, so that said top end of said magnetic ring is higher than the level of the label area of said 45 r.p.m. record.
Claim 3
Dependent Claim
36 words
The structure set forth in claim 1 above, further including: an annular cup adapted to fit in a nesting relationship over said top end of said magnetic ring opposite said bottom end abutting said protective disc.
Claim 4
Dependent Claim
213 words
An annular protective disc for use with phonograph records for insertion between said records prior to stacking the records on the spindle of a record player, wherein said disc is substantially the same diameter as a long playing record, said disc having a radially innermost portion and a radially outermost portion in concentric relationship therewith, said radially outermost portion coextensive with the sound groove zone of a long playing record, comprising: a layer of annular sheet stock of magnetic material coextensive with the diameter of said disc, having a centrally disposed aperture adapted to receive the spindle of a record player, said aperture similar to the size of the aperture in a long playing record, cushioning material secured to the top and bottom of the radially outermost portion, to protect said sound groove zone, and an annular magnetic ring having substantially the same outer circumference as the label area of a long playing record, and a centrally located aperture within said magnetic ring having an inner diameter of approximately one-half inch, said magnetic ring having the requisite strength and thickness to secure a long playing record to said protective disc by means of magnetic attraction when the long playing record is placed on said spindle intermediate said magnetic ring and said protective disc.
Claim 5
Dependent Claim
213 words
An annular protective disc for use with phonograph records for insertion between said records prior to stacking the records on the spindle of a record player, wherein said disc is substantially the same diameter as a long playing record, said disc having a radially innermost portion and a radially outermost portion in concentric relationship therewith, said radially outermost portion coextensive with the sound groove zone of a long playing record, comprising: a layer of annular sheet stock of magnetic material coextensive with the diameter of said disc, having a centrally disposed aperture adapted to receive the spindle of a record player, said aperture similar to the size of the aperture in a long playing record, cushioning material secured to the top and bottom of the radially outermost portion, to protect said sound groove zone, and an annular magnetic ring having substantially the same outer circumference as the label area of a long playing record, and a centrally located aperture within said magnetic ring having an inner diameter of approximately one-half inch, said magnetic ring having the requisite strength and thickness to secure a long playing record to said protective disc by means of magnetic attraction when the long playing record is placed on said spindle intermediate said magnetic ring and said protective disc.
Claim 6
Dependent Claim
35 words
The structure set forth in claim 3 above, further including: an annular cup adapted to fit in a nesting relationship over the end of the said magnetic ring opposite the end abutting the protective disc.
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) | 1977-12-16 | 1978-06-17 | 1978-12-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-12-16 | 1982-06-17 | 1982-12-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-12-16 | 1986-06-17 | 1986-12-17 | $7700.00 | Window Closed / Lapsed |