US3774757A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Protective envelope for phonograph record
Assignee: HERS MANAGEMENT CORP
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Filing: 1971-09-29
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Granted: 1973-11-27
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Expires: 1991-09-29
Abstract
Abstract A protective envelope for phonograph records is disclosed which comprises a pair of electrostatically charged foamed synthetic polymer panels sealed together over less than their entire periphery and which protects the record and removes dust and dirt from the record as the record is removed therefrom.
Inventors
- 👤 S Harris
- 👤 J Bazelmans
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 20:16
CPC Classifications
B; B65; B65D; B65D85/00; B65D85/54; B65D85/544
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
70 words
A protective envelope for phonograph records comprising a pair of adjacent electrostatically charged panels joined together along less than the entire periphery thereof, the unjoined portion being large enough to provide an entrance for receipt of a phonograph record, the panels being formed from foamed synthetic polymer, the panels having a higher level of static electricity than phonograph records in order to effect removal of dust and dirt particles electrostatically.
Claim 2
Dependent Claim
70 words
A protective envelope for phonograph records comprising a pair of adjacent electrostatically charged panels joined together along less than the entire periphery thereof, the unjoined portion being large enough to provide an entrance for receipt of a phonograph record, the panels being formed from foamed synthetic polymer, the panels having a higher level of static electricity than phonograph records in order to effect removal of dust and dirt particles electrostatically.
Claim 3
Dependent Claim
16 words
A protective envelope as defined in claim 1 wherein the panels are formed from expanded polyurethane.
Claim 4
Dependent Claim
25 words
A protective envelope as defined in claim 1 wherein the exterior surface of at least one panel is laminated to form a continuous exterior skin.
Claim 5
Dependent Claim
22 words
A protective envelope as defined in claim 3 wherein the skin is smooth and provides a surface adapted to be printed upon.
References Cited (Backward Citations)
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Cited
US3317038A
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US3224573A
Cited
US3532932A
Cited
US3422952A
Cited
US3668658A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-11-26 | 1977-05-28 | 1977-11-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-11-26 | 1981-05-28 | 1981-11-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-11-26 | 1985-05-28 | 1985-11-27 | $7700.00 | Window Closed / Lapsed |