US3598339A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tape cassette for use in tape recorders
Assignee: Olympus Corp
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Filing: 1969-02-04
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Granted: 1971-08-10
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Expires: 1989-02-04
Abstract
Abstract A tape cassette for use in tape recorders comprises a casing formed by two upper and lower half portions and three guide pins adapted to be engaged with the lower half portion. A faceplate covers each of the portions, and a plurality of recesses are formed in the portions and are covered by the faceplate. A leaf spring and guide rollers are mounted in the cassette for guidably engaging the tape. These members are caused to be cooperate with each other such that locking and releasing operation of the cassettes can be simply made whereas a pinch roller and heads each having a comparatively large width can be used within a casing which is extremely thin in thickness, and also the tape can be urged against the heads with a constant pressure and that portion of the tape which is located between the two guide rollers can be maintained under tension.
Inventors
- 👤 Shoichi Saito
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 11:52
CPC Classifications
G; G11; G11B; G11B23/00; G11B23/02; G11B23/04; G11B23/08; G11B23/087
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
193 words
A cassette for use in tape recorders comprising a casing of synthetic resin, said casing including upper and lower half portions, said casing including spaced end walls extending between said portions and being provided in one of said end walls with at least three recesses adapted to receive therein a pinch roller and recording, reproducing and erasing heads and with at least one hole adapted to be extended through by a corresponding capstan shaft, one of said recesses being located at the center of said one end wall and being adapted to receive therein said pinch roller and being formed at the top portion thereof with said hole which is adapted to be extended through by said capstan shaft, the other two recesses being located on each side of the center recess and being adapted to receive therein said recording, reproducing and erasing heads, said cassette further including adjacent selected of said recesses a leaf spring symmetrical in shape and pivoted at its center on a fulcrum, and guide pins supporting said spring at each end thereof, said leaf spring including pads at equal distances from said fulcrum, adapted to engage said heads.
Claim 2
Dependent Claim
193 words
A cassette for use in tape recorders comprising a casing of synthetic resin, said casing including upper and lower half portions, said casing including spaced end walls extending between said portions and being provided in one of said end walls with at least three recesses adapted to receive therein a pinch roller and recording, reproducing and erasing heads and with at least one hole adapted to be extended through by a corresponding capstan shaft, one of said recesses being located at the center of said one end wall and being adapted to receive therein said pinch roller and being formed at the top portion thereof with said hole which is adapted to be extended through by said capstan shaft, the other two recesses being located on each side of the center recess and being adapted to receive therein said recording, reproducing and erasing heads, said cassette further including adjacent selected of said recesses a leaf spring symmetrical in shape and pivoted at its center on a fulcrum, and guide pins supporting said spring at each end thereof, said leaf spring including pads at equal distances from said fulcrum, adapted to engage said heads.
Claim 3
Dependent Claim
59 words
A cassettE for use in tape recorders as claimed in claim 1, wherein said casing is further provided near the recesses in said one end wall with two holes adapted to receive two stationary pins each having an engaging portion and at a position spaced from said end wall with a further hole adapted to receive a movable pin.
Claim 4
Dependent Claim
26 words
A cassette for use in tape recorders as claimed in claim 1 further including face plates of a rigid material and adapted to cover said recesses.
Claim 5
Dependent Claim
25 words
A cassette for use in tape recorders as claimed in claim 1 including at least one sidewall and a sheet of paper on said sidewall.
Claim 6
Dependent Claim
39 words
A cassette for use in tape recorders as claimed in claim 1 wherein the center recess is of dish shape and receives the pinch roller such that the major portion of the pinch roller is located outside the cassette.
Claim 7
Dependent Claim
20 words
A cassette for use in tape recorders as claimed in claim 1 wherein said leaf spring is an integral element.
Claim 8
Dependent Claim
240 words
A cassette for use in tape recorders comprising a casing of synthetic resin, said casing including upper and lower half portions, said casing including spaced end walls extending between said portions and being provided in one of said end walls with at least three recesses adapted to receive therein a pinch roller and recording, reproducing and erasing heads and with at least one hole adapted to be extended through by a corresponding capstan shaft, one of said recesses being located at the center of said one end wall and being adapted to receive therein said pinch roller and being formed at the top portion thereof with said hole which is adapted to be extended through by said capstan shaft, the other two recesses being located on each side of the center recess and being adapted to receive therein said recording, reproducing and erasing heads, said cassette further including a channel-shaped rotatable arm, a stationary shaft pivotably supporting said arm, at one end thereof, said arm having a free end, a guide roller supported on said arm at said free end, and an L-shaped spring having two legs one of which engages said arm and the other of which is urged against said casing, said L-shaped spring acting as a lever having a fulcrum where said spring engages said stationary shaft to always urge said arm against said casing, thus always keeping a tape guided by said guide roller in tension.
Claim 9
Dependent Claim
240 words
A cassette for use in tape recorders comprising a casing of synthetic resin, said casing including upper and lower half portions, said casing including spaced end walls extending between said portions and being provided in one of said end walls with at least three recesses adapted to receive therein a pinch roller and recording, reproducing and erasing heads and with at least one hole adapted to be extended through by a corresponding capstan shaft, one of said recesses being located at the center of said one end wall and being adapted to receive therein said pinch roller and being formed at the top portion thereof with said hole which is adapted to be extended through by said capstan shaft, the other two recesses being located on each side of the center recess and being adapted to receive therein said recording, reproducing and erasing heads, said cassette further including a channel-shaped rotatable arm, a stationary shaft pivotably supporting said arm, at one end thereof, said arm having a free end, a guide roller supported on said arm at said free end, and an L-shaped spring having two legs one of which engages said arm and the other of which is urged against said casing, said L-shaped spring acting as a lever having a fulcrum where said spring engages said stationary shaft to always urge said arm against said casing, thus always keeping a tape guided by said guide roller in tension.
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) | 1974-08-09 | 1975-02-08 | 1975-08-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-09 | 1979-02-08 | 1979-08-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-09 | 1983-02-08 | 1983-08-10 | $7700.00 | Window Closed / Lapsed |