US4078742A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetic tape cartridge
Assignee: Individual
•
Filing: 1976-02-13
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Granted: 1978-03-14
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Expires: 1996-02-13
Abstract
Abstract The specification describes a magnetic tape cartridge, more particularly a miniature one, with access openings arranged in one narrow side of the cartridge housing for the magnetic heads. The magnetic tape is supported in the access openings on resilient cushions. In the direction of tape travel upstream and downstream and between the access openings guide pins, fixed to the cartridge housing, are provided for the magnetic tape. The cushions are arranged on the arms of a double lever of resiliently elastic material, which is held by joint lugs and a pin in two plan-parallel flat strips fixed to the cartridge so as to allow pivoting movement. The strips extend perpendicularly and fit immediately underneath the narrow side having the access openings and the strips are fixedly connected together by the guide pins with a spacing between the strips.
Inventors
- 👤 Leo Steipe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 07:21
CPC Classifications
G; G11; G11B; G11B15/00; G11B15/60; G11B15/62; G11B23/00; G11B23/02; G11B23/04; G11B23/08; G11B23/087; G11B23/08707; G11B23/08757; G11B23/08771
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
218 words
A magnetic tape cartridge, comprising: a cartridge housing including generally parallel side walls arranged in spaced apart relationship, one narrow side of said housing having two spaced access openings therein to accommodate magnetic heads, and said housing containing spool means for carrying magnetic tape; a pair of spaced, elongated flat strips mounted within said housing spaced from said spool means and adjacent said one narrow side, said flat strips lying generally parallel with said housing side walls, and having a length greater than the distance measured between the outer edges of said two spaced access openings; guide pin means carried by and extending between said spaced, elongated flat strips, adapted to guide said magnetic tape along said one narrow side of said housing; a lever pivotally mounted centrally thereof between said spaced, flat strips by pivot means located between said spaced access openings, said lever being disposed adjacent said one narrow side of said housing and extending lengthwise thereof, and including two oppositely directed resilient arms extending at least to the regions of said access openings; and a cushion on the outer end portion of each of said oppositely directed resilient arms, one of said cushions being positioned opposite each of said access openings, and said resilient arms and said cushions being adapted to support said magnetic tape.
Claim 2
Dependent Claim
218 words
A magnetic tape cartridge, comprising: a cartridge housing including generally parallel side walls arranged in spaced apart relationship, one narrow side of said housing having two spaced access openings therein to accommodate magnetic heads, and said housing containing spool means for carrying magnetic tape; a pair of spaced, elongated flat strips mounted within said housing spaced from said spool means and adjacent said one narrow side, said flat strips lying generally parallel with said housing side walls, and having a length greater than the distance measured between the outer edges of said two spaced access openings; guide pin means carried by and extending between said spaced, elongated flat strips, adapted to guide said magnetic tape along said one narrow side of said housing; a lever pivotally mounted centrally thereof between said spaced, flat strips by pivot means located between said spaced access openings, said lever being disposed adjacent said one narrow side of said housing and extending lengthwise thereof, and including two oppositely directed resilient arms extending at least to the regions of said access openings; and a cushion on the outer end portion of each of said oppositely directed resilient arms, one of said cushions being positioned opposite each of said access openings, and said resilient arms and said cushions being adapted to support said magnetic tape.
Claim 3
Dependent Claim
53 words
A magnetic tape cartridge as recited in claim 1, wherein said guide pin means comprises three guide pins extending between and connecting said flat strips, one of said guide pins being positioned centrally of said flat strips between said access openings, and the other two pins being positioned outwardly of said access openings.
Claim 4
Dependent Claim
61 words
A magnetic tape cartridge as recited in claim 2, wherein the outer edges of said flat strips are in engagement with the inner surface of said one narrow side of said housing, said guide pins being spaced inwardly from said outer edges, and said outer edges having recesses therein in the regions of said access openings, to accommodate said magnetic heads.
Claim 5
Dependent Claim
43 words
A magnetic tape cartridge as recited in claim 1, wherein said lever includes a pair of inwardly projecting, parallel lugs centrally thereof, and is pivotally mounted by a pivot pin passing through said lugs and received in openings provided in said flat strips.
Claim 6
Dependent Claim
44 words
A magnetic tape cartridge as recited in claim 4, wherein the outer ends of said pivot pin project beyond said flat strips and are received within openings provided in the side walls of said cartridge housing, for mounting said flat strips in said housing.
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) | 1981-03-13 | 1981-09-12 | 1982-03-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-03-13 | 1985-09-12 | 1986-03-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-03-13 | 1989-09-12 | 1990-03-14 | $7700.00 | Window Closed / Lapsed |