Patent US4235334A successfully refreshed from Google Patents.
US4235334A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cassette storage case
Assignee: Individual
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Filing: 1979-01-12
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Granted: 1980-11-25
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Expires: 1999-01-12
Abstract
Abstract A tape cassette storage case is disclosed having hexagonal tape reel immobilization pillars and trapezoidal recesses for cradling a cassette and immobilizing the tape reels. Insertion of the cassette into the base of the case effectively immobilizes the tape reels without the need to close the case. When closed, the case affords effective protection from shock, dust and dirt.
Inventors
- 👤 Chul S. Ahn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:10
CPC Classifications
G; G11; G11B; G11B23/00; G11B23/02; G11B23/023; G11B23/0233
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
280 words
A storage case for an individual tape cassette having a pair of tape reels, a trapezoidal protrusion formed on each side thereof, and capstan drive and head openings along one edge thereof, said comprising: a generally rectangular base for supporting a cassette; opposed upstanding side walls joined to said base and terminating in upper edges disposed below the upper surface of the cassette; an upstanding front wall joined to said base and said side walls and terminating in an upper edge disposed below the upper surface of the cassette; an upstanding back wall higher than said front and side walls joined to said base and said side walls opposite said front wall, against which said capstan drive and head openings of the cassette are positioned; a pair of spaced upstanding pillars joined to said base and located so that each pillar will mate with one of the tape reels of the cassette; a lower trapezoidal recess formed in said base adjacent to said back wall for receiving the trapezoidal protrusion on one side of the cassette; a cover hinged to said back wall along substantially the entire coextensive lengths thereof, said cover comprising a generally rectangular top wall hinged along its rear edge to the top edge of said back wall, an upper trapezoidal recess formed in said top wall adjacent to said back wall for receiving the trapezoidal protrusion on the other side of the cassette, opposed side flanges joined to and projecting from said top wall toward said base when said case is closed, and a front flange joined to said top wall and said side flanges; and closure means for maintaining said case in a closed position.
Claim 2
Dependent Claim
280 words
A storage case for an individual tape cassette having a pair of tape reels, a trapezoidal protrusion formed on each side thereof, and capstan drive and head openings along one edge thereof, said comprising: a generally rectangular base for supporting a cassette; opposed upstanding side walls joined to said base and terminating in upper edges disposed below the upper surface of the cassette; an upstanding front wall joined to said base and said side walls and terminating in an upper edge disposed below the upper surface of the cassette; an upstanding back wall higher than said front and side walls joined to said base and said side walls opposite said front wall, against which said capstan drive and head openings of the cassette are positioned; a pair of spaced upstanding pillars joined to said base and located so that each pillar will mate with one of the tape reels of the cassette; a lower trapezoidal recess formed in said base adjacent to said back wall for receiving the trapezoidal protrusion on one side of the cassette; a cover hinged to said back wall along substantially the entire coextensive lengths thereof, said cover comprising a generally rectangular top wall hinged along its rear edge to the top edge of said back wall, an upper trapezoidal recess formed in said top wall adjacent to said back wall for receiving the trapezoidal protrusion on the other side of the cassette, opposed side flanges joined to and projecting from said top wall toward said base when said case is closed, and a front flange joined to said top wall and said side flanges; and closure means for maintaining said case in a closed position.
Claim 3
Dependent Claim
36 words
A case according to claim 1 wherein the hinged edges of said back wall and said top wall are chamfered inwardly of the hinge line to provide clearance between the edges when the case is closed.
Claim 4
Dependent Claim
20 words
A case according to claim 2 further comprising raised cassette supporting ribs formed on said base and said top wall.
Claim 5
Dependent Claim
14 words
A case according to claim 1 wherein said pillars are prismatic with tapered tops.
Claim 6
Dependent Claim
16 words
A case according to claim 4 wherein said pillars are hexagonal in cross-section with frusto-conical tops.
Claim 7
Dependent Claim
39 words
A case according to claim 5 further comprising a central hole formed in each pillar, and a pair of spaced projecting pins carried by said top wall and adapted to mate with said holes when the case is closed.
Claim 8
Dependent Claim
46 words
A case according to claim 1 wherein said closure means comprises a pair of slots formed in said front wall and a pair of mating hooks projecting from the edge of said front flange and adapted to mate with said slots when the case is closed.
Claim 9
Dependent Claim
44 words
A case according to claim 1 wherein the free edges of said side walls and said front wall and said side flanges and said front flange are stepped to matingly engage one another when the case is closed and seal out dust and dirt.
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) | 1983-11-25 | 1984-05-26 | 1984-11-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-11-25 | 1988-05-26 | 1988-11-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-11-25 | 1992-05-26 | 1992-11-25 | $7700.00 | Window Closed / Lapsed |