US4018404A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic tape stopping detective device in a magnetic recording and reproducing apparatus
Assignee: Sanyo Electric Co Ltd
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Filing: 1975-06-04
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Granted: 1977-04-19
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Expires: 1995-06-04
Abstract
Abstract This invention provides for an automatic tape stopping detective device in a magnetic recording and reproducing apparatus which detects the stopping of the run of the tape, having a take-up reel disk which rotates with the run of the tape, a crank pulley which always rotates whether the tape is running or not, a main lever which, being driven by the crank pulley, moves leftwards and rightwards by a definite stroke, a sub-lever which, having a sliding mechanism with the main lever, moves leftwards and rightwards with the main lever while the take-up reel disk is rotating and stops regardless of the movement of the main lever while the take-up reel disk is not rotating, and a control lever which, pivotally mounted on the main lever, moves with the movement of the main lever when the sub-lever stops.
Inventors
- 👤 Yasuo Sami
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 19:07
CPC Classifications
G; G11; G11B; G11B15/00; G11B15/18; G11B15/46; G11B15/02; G11B15/10
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
151 words
An automatic tape stopping detective device in a magnetic recording and reproducing apparatus which detects the stopping of the run of the tape, comprising a take-up reel disk means which rotates with the run of the tape, a crank pulley means which always rotates whether the tape is running or not, a main lever operatively associated with a sliding mechanism, said means lever being driven by said crank pulley means, and moves in the left and right direction in a definite stroke, a sub-lever which is adapted to move in the left and right direction with said main lever when said take-up reel disk means is rotating and stops regardless of the movement of said main lever when said take-up reel disk means is not rotating, and a control lever pivotally mounted on said main lever, said control lever moving with the movement of said main lever when said sub-lever stops.
Claim 2
Dependent Claim
151 words
An automatic tape stopping detective device in a magnetic recording and reproducing apparatus which detects the stopping of the run of the tape, comprising a take-up reel disk means which rotates with the run of the tape, a crank pulley means which always rotates whether the tape is running or not, a main lever operatively associated with a sliding mechanism, said means lever being driven by said crank pulley means, and moves in the left and right direction in a definite stroke, a sub-lever which is adapted to move in the left and right direction with said main lever when said take-up reel disk means is rotating and stops regardless of the movement of said main lever when said take-up reel disk means is not rotating, and a control lever pivotally mounted on said main lever, said control lever moving with the movement of said main lever when said sub-lever stops.
Claim 3
Dependent Claim
88 words
The automatic tape stopping detective device according to claim 1, wherein a detective lever is rotatably mounted on said sub-lever, said detective lever making said sub-lever move with the movement of said main lever by moving along the rotating direction of said take-up reel disk means while said take-up reel disk means is rotating, and said detective lever making said sub-lever stop regardless of the movement of said main lever by stopping when faced to said take-up reel disk means when said take-up reel disk means stops rotating.
Claim 4
Dependent Claim
57 words
An automatic tape stopping detective device according to claim 2, which has a sliding mechanism of the sub-chassis and said main lever, a sliding mechanism of said main lever and said sub-lever, a spring urging said sub-lever toward said main lever in one direction, and a spring urging said detective lever toward said sub-lever in one direction.
Claim 5
Dependent Claim
57 words
An automatic tape stopping detective device according to claim 2, which has a position decisive means which makes said detective lever look toward the rotating center of said No. 1 rotator until the time when the detective lever contacts with said No. 1 rotator and makes the detective lever apart from said position decisive means itself afterwards.
Claim 6
Dependent Claim
83 words
The automatic tape stopping detective device according to claim 1, wherein the sub-lever is provided with a sloped guide slot and the control lever is provided with a guide pin, said guide pin being slidably disposed in said guide slot so that said control lever is placed in a non-controlled position when said sub-lever moves with the movement of said main lever and is made to move to a controlled position when said sub-lever stops, regardless of the movement of said main lever.
Claim 7
Dependent Claim
83 words
The automatic tape stopping detective device according to claim 1, wherein the control lever is provided with a sloped guide slot and the sub-lever is provided with a guide pin, said guide pin being slidably disposed in said guide slot so that said control lever is placed in a non-controlled position when said sub-lever moves with the movement of said main lever and is made to move to a controlled position when said sub-lever stops, regardless of the movement of said main lever.
Claim 8
Dependent Claim
49 words
The automatic tape stopping detective device according to claim 2, which is further provided with a spring between said sub-lever and said detective lever which directs said detective lever toward the rotating center of said take-up reel disk means until said detective lever contacts said take-up reel disk means.
Claim 9
Dependent Claim
74 words
The automatic tape stopping detective device according to claim 2, further provided with a position decisive means which is adapted to move with the movement of said detective lever toward the rotating center of said take-up reel disk means, said detective lever stopping when it contacts said take-up reel disk means, regardless of the movement of said take-up reel disk means after the time when said detective lever contacts said take-up reel disk means.
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) | 1980-04-18 | 1980-10-18 | 1981-04-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-04-18 | 1984-10-18 | 1985-04-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-04-18 | 1988-10-18 | 1989-04-19 | $7700.00 | Window Closed / Lapsed |