US4245740A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Container for magnetic tape cassette
Assignee: Emtec Magnetics GmbH
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Filing: 1979-07-25
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Granted: 1981-01-20
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Expires: 1999-07-25
Abstract
Abstract Container for magnetic tape cassettes in particular for video cassettes in which the rolls of tape are protected against twisting by means of two hollow cylindrical bodies each comprising four guide elements with spring mounted arresting pins located at the bottom of the containers. When inserting the cassette into the container one of the pins of each hollow cylindrical body clicks into one of the drive holes of the hubs.
Inventors
- 👤 Hartmut Thiele
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 23:03
CPC Classifications
G; G11; G11B; G11B23/00; G11B23/02; G11B23/023; G11B23/0233
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
138 words
Container for receiving and storing a magnetic tape cassette with two tape winding hubs, each hub having a circular recess and a partition containing three drive holes arranged in a circle, the container comprising two hollow cylindrical bodies located inside the container each of which is provided for positively engaging in one of the recesses and at least four spring mounted arresting means located in and projecting from raised or countersunk guide elements arranged at equidistant intervals in a circle at the upper surface of each of the two cylindrical bodies such that when a cassette is inserted into the container, one of the arresting means of each of the two hollow cylindrical bodies engages one of the drive holes of each partition, the end portion of the arresting means which projects form the guide elements being rounded.
Claim 2
Dependent Claim
138 words
Container for receiving and storing a magnetic tape cassette with two tape winding hubs, each hub having a circular recess and a partition containing three drive holes arranged in a circle, the container comprising two hollow cylindrical bodies located inside the container each of which is provided for positively engaging in one of the recesses and at least four spring mounted arresting means located in and projecting from raised or countersunk guide elements arranged at equidistant intervals in a circle at the upper surface of each of the two cylindrical bodies such that when a cassette is inserted into the container, one of the arresting means of each of the two hollow cylindrical bodies engages one of the drive holes of each partition, the end portion of the arresting means which projects form the guide elements being rounded.
Claim 3
Dependent Claim
28 words
Container according to claim 1, wherein the height of the hollow cylindrical bodies with raised guide elements corresponds to the distance between the cassette base and hub partition.
Claim 4
Dependent Claim
29 words
Container according to claim 1, wherein the height of the hollow cylindrical bodies corresponds to the distance between the cassette base and hub partition when guide elements are countersunk.
Claim 5
Dependent Claim
24 words
Container according to any of claim 1 to 3, wherein the ends of the arresting means projecting from the guide elements are dome shaped.
Claim 6
Dependent Claim
22 words
Container according to any of claim 1 to 3, wherein each of the spring mounted arresting means is formed in one piece.
Claim 7
Dependent Claim
50 words
Container according to any of claims 1 to 3, wherein the portion of the arresting means which projects from the guide elements has a smaller diameter than the portion located inside the guide elements, the latter portion having a diameter which corresponds to the internal diameter of the guide element.
Claim 8
Dependent Claim
21 words
Container according to any of claims 1 to 3, wherein the arresting means are supported on the base of the container.
Claim 9
Dependent Claim
16 words
Container according to any of claims 1 to 3, wherein the arresting means comprise a pin.
Claim 10
Dependent Claim
44 words
Container according to any of claims 1 to 3, wherein the countersunk guide element and the spring mounted arresting means form a unit comprising a flanged tube containing a spiral spring, a ball resting on the spring and on a collar of the tube.
Claim 11
Dependent Claim
24 words
Container according to any of claims 1 to 3, wherein the lateral walls of the hollow cylindrical bodies have a plurality of longitudinal beads.
Claim 12
Dependent Claim
33 words
Container according to any of claims 1-3, wherein a narrow flange whose diameter corresponds to the opening in the base of the cassette is moulded on the foot of the hollow cylindrical bodies.
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) | 1984-01-20 | 1984-07-21 | 1985-01-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-01-20 | 1988-07-21 | 1989-01-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-01-20 | 1992-07-21 | 1993-01-20 | $7700.00 | Window Closed / Lapsed |