US4669020A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cassette pressure pad improvement
Assignee: Individual
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Filing: 1984-05-18
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Granted: 1987-05-26
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Expires: 2004-05-18
Abstract
Abstract An improved pressure pad construction for a cassette is provided, comprising a soft foam material properly dimensioned to fit snugly between the magnetic shield plate and the tape and between the cassette sides, which in one form includes a bracket which is spring mounted adjustably along the magnetic shield plate and a method for replacing the usual pressure pad with an improved pad.
Inventors
- 👤 Harold L. Shepherd
- 👤 George Spector
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 20:54
CPC Classifications
G; G11; G11B; G11B23/00; G11B23/02; G11B23/04; G11B23/08; G11B23/087; G11B23/08707; G11B23/08757; G11B23/08771
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
153 words
An improved buffering pad in combination with a magnetic shield in a tape cassette wherein said pad is formed from a soft elastic material and includes means for centering said pad relative to said shield and for slideably engaging said shield on one side and the tape on an opposite side of said pad wherein said means comprises: (a) a guide track having a slot therein, said guide track mounted on said magnetic shield; (b) a bracket having a rib that slides within the slot of said guide track; (c) a block of soft foam material forming said pad being attached at its rear portion to said bracket, said block being wide enough to contact rear surface of a magnetic tape; and (d) a pair of non-magnetic springs, each said spring mounted between a side of said block and a leg of the magnetic shield to adjustably bias the block along said shield.
Claim 2
Dependent Claim
153 words
An improved buffering pad in combination with a magnetic shield in a tape cassette wherein said pad is formed from a soft elastic material and includes means for centering said pad relative to said shield and for slideably engaging said shield on one side and the tape on an opposite side of said pad wherein said means comprises: (a) a guide track having a slot therein, said guide track mounted on said magnetic shield; (b) a bracket having a rib that slides within the slot of said guide track; (c) a block of soft foam material forming said pad being attached at its rear portion to said bracket, said block being wide enough to contact rear surface of a magnetic tape; and (d) a pair of non-magnetic springs, each said spring mounted between a side of said block and a leg of the magnetic shield to adjustably bias the block along said shield.
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) | 1990-05-25 | 1990-11-24 | 1991-05-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-05-25 | 1994-11-24 | 1995-05-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-05-25 | 1998-11-24 | 1999-05-26 | $7700.00 | Window Closed / Lapsed |