Patent US3883090A successfully refreshed from Google Patents.
US3883090A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Drive for magnetic recording disc or tape cassettes
Assignee: Meritor Inc
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Filing: 1972-04-24
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Granted: 1975-05-13
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Expires: 1992-04-24
Abstract
Abstract A cassette containing a magnetic recording media has a rotatably mounted hub connected to the media and provided with at least one face having a plurality of circularly arranged radially extending and axially facing undercut teeth. A complementary drive hub is provided in a deck to receive the cassette. The drive and driven hubs are brought into engagement, preferably by interacting alignment members on the two hubs, and the complementary undercut teeth cause the two hubs to mesh for positive driving engagement in one direction. The hubs are capable of overrunning in the opposite direction of rotation.
Inventors
- 👤 Sr Robert P Hall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 22:49
CPC Classifications
G; G11; G11B; G11B15/00; G11B15/18; G11B15/26; G11B15/32; G11B15/46; G11B15/50; G11B17/00; G11B17/02; G11B17/022; G11B17/028; G11B17/03; G11B23/00; G11B23/0014; G11B23/0021; G11B23/0028; G11B23/0035; G11B23/02; G11B23/03; G11B23/032; G11B23/0321
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
119 words
A magnetic cassette drive comprising, a hollow cassette housing a movable magnetic recording media, a driven hub rotatably supported in said cassette and connected to move the media, a driven face on said driven hub including a plurality of circularly arranged radially extending and axially facing teeth, said teeth having undercut driving faces, a drive hub separate from said cassette and having a drive face which is the complement of said driven hub, means connected to rotate said drive hub such that its undercut driving faces are foremost in the direction of rotation; and means supporting said cassette and said drive hub to bring said faces into contact to cause a locking engagement of the hubs during rotation thereof.
Claim 2
Dependent Claim
119 words
A magnetic cassette drive comprising, a hollow cassette housing a movable magnetic recording media, a driven hub rotatably supported in said cassette and connected to move the media, a driven face on said driven hub including a plurality of circularly arranged radially extending and axially facing teeth, said teeth having undercut driving faces, a drive hub separate from said cassette and having a drive face which is the complement of said driven hub, means connected to rotate said drive hub such that its undercut driving faces are foremost in the direction of rotation; and means supporting said cassette and said drive hub to bring said faces into contact to cause a locking engagement of the hubs during rotation thereof.
Claim 3
Dependent Claim
30 words
A cassette drive as defined in claim 1, including first and second interacting locating means of the respective said hubs to align said faces for complete meshing of said teeth.
Claim 4
Dependent Claim
29 words
A cassette drive as defined in claim 1 wherein the media is a disc of recording material retained in said cassette and connected to rotate with said driven hub.
Claim 5
Dependent Claim
34 words
A cassette drive as defined in claim 1, wherein the media is a length of recording tape in said cassette and arranged to be moved lengthwise in response to rotation of said driven hub.
Claim 6
Dependent Claim
201 words
A drive for transporting a magnetic recording media contained in a cassette past a transducer, said drive comprising a deck, a drive hub mounted on said deck, said drive hub having a disc face with a plurality of radially extending teeth thereon undercut in one direction and arranged in a circle, a cassette containing a quantity of magnetic recording media, a driven hub attached to said media to move it through rotation of said driven hub, said cassette having an opening aligned with said driven hub, said driven hub having a disc face located in said opening substantially flush with the outer surface of said cassette, a plurality of radially extending teeth on said driven hub arranged in a circle and undercut in complementary fashion to said drive hub, means cooperating with said cassette and said drive hub to guide said disc faces into aligned contact, and drive means connected to rotate said drive hub in a direction to interengage the undercut sides of said teeth whereby said undercut teeth will mesh and will automatically draw said disc faces firmly together upon rotation of said drive hub to advance said media without causing said drive hub to enter into said cassette.
Claim 7
Dependent Claim
201 words
A drive for transporting a magnetic recording media contained in a cassette past a transducer, said drive comprising a deck, a drive hub mounted on said deck, said drive hub having a disc face with a plurality of radially extending teeth thereon undercut in one direction and arranged in a circle, a cassette containing a quantity of magnetic recording media, a driven hub attached to said media to move it through rotation of said driven hub, said cassette having an opening aligned with said driven hub, said driven hub having a disc face located in said opening substantially flush with the outer surface of said cassette, a plurality of radially extending teeth on said driven hub arranged in a circle and undercut in complementary fashion to said drive hub, means cooperating with said cassette and said drive hub to guide said disc faces into aligned contact, and drive means connected to rotate said drive hub in a direction to interengage the undercut sides of said teeth whereby said undercut teeth will mesh and will automatically draw said disc faces firmly together upon rotation of said drive hub to advance said media without causing said drive hub to enter into said cassette.
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) | 1978-05-12 | 1978-11-11 | 1979-05-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-05-12 | 1982-11-11 | 1983-05-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-05-12 | 1986-11-11 | 1987-05-13 | $7700.00 | Window Closed / Lapsed |