US4670808A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cleaning cassette for use in a cassette tape recorder
Assignee: AM KEMI DENMARK AS
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Filing: 1984-05-17
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Granted: 1987-06-02
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Expires: 2004-05-17
Abstract
Abstract A clean cassette for cassette tape recorders comprising a holder for a cleaning member, which holder is pivotally connected at one end with a spring-biased pivot arm. The opposite end of the spring-biased pivot arm engages a cam device which in the operative position of the cassette is engaged by one coil shaft of the tape recorder. The opposite end of the holder is intermittently engageable with a second pivot arm. The second pivot arm is influenced in the operative position by a second cam device engaged by the second coil shaft of the tape recorder. Upon actuation of the second coil shaft, an end of the second pivot arm moves the holder against the action of the spring bias of the first pivot arm.
Inventors
- 👤 Anders Moesgaard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 11:59
CPC Classifications
G; G11; G11B; G11B23/00; G11B23/02; G11B23/04; G11B23/049
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
250 words
A cleaning cassette for use in a cassette tape recorder for the cleaning of a recording/reproducing head thereof, said recorder having a first and a second coil shaft for engagement with each of two coil drive members of a tape cassette, said cleaning cassette comprising a cassette casing in which a spring-biased pivot arm is pivotally journalled and is influenced in the operative position of the cleaning cassette in a tape recorder by a cam device adapted to engage one of the coil shafts of the tape recorder, said pivot arm being connected with a holder of a cleaning member, said cleaning member adapted to engage the recording/reproducing head in said operative position, said holder journalled in the cleaning cassette casing for linear reciprocating movement along a path parallel to a longitudinal side of said cassette casing so as to cause said cleaning member to undergo a cleaning movement relative to the recording/reproducing head by the pivotal movement of the pivot arm caused by rotation of said cam device, one end portion the holder pivotally connected with said pivot arm, the other end portion of said holder intermittently engageable by a second pivot arm, said second pivot arm in said operative position influenceable by a second cam device adapted to engage the other coil shaft of the tape recorder, said second pivot arm adapted to perform a pivotal movement upon rotation of said second cam device and to move the holder against the spring-bias acting on the first pivot arm.
Claim 2
Dependent Claim
250 words
A cleaning cassette for use in a cassette tape recorder for the cleaning of a recording/reproducing head thereof, said recorder having a first and a second coil shaft for engagement with each of two coil drive members of a tape cassette, said cleaning cassette comprising a cassette casing in which a spring-biased pivot arm is pivotally journalled and is influenced in the operative position of the cleaning cassette in a tape recorder by a cam device adapted to engage one of the coil shafts of the tape recorder, said pivot arm being connected with a holder of a cleaning member, said cleaning member adapted to engage the recording/reproducing head in said operative position, said holder journalled in the cleaning cassette casing for linear reciprocating movement along a path parallel to a longitudinal side of said cassette casing so as to cause said cleaning member to undergo a cleaning movement relative to the recording/reproducing head by the pivotal movement of the pivot arm caused by rotation of said cam device, one end portion the holder pivotally connected with said pivot arm, the other end portion of said holder intermittently engageable by a second pivot arm, said second pivot arm in said operative position influenceable by a second cam device adapted to engage the other coil shaft of the tape recorder, said second pivot arm adapted to perform a pivotal movement upon rotation of said second cam device and to move the holder against the spring-bias acting on the first pivot arm.
Claim 3
Dependent Claim
62 words
The cleaning cassette as claimed in claim 1, wherein each of said cam devices is of circular cross section and is adapted to concentrically engage in said operative position with a respective one of the coil drive shafts introduced in said cassette casing, each of said cam devices provided with a number of cams along a surface engaging the respective pivot arm.
Claim 4
Dependent Claim
26 words
The cleaning cassette as claimed in claim 2, wherein said cam devices comprise the coil drive shafts introduced in the cassette casing in the operative position.
Claim 5
Dependent Claim
198 words
A cleaning cassette comprising: a cassette body provided with a mechanism having a cleaning body attached to a reciprocable holder, whose action is suitable for a cleaning magnetic head, said mechanism further including, a first arm, one end of which is pivotally secured to one end of said holder, with the other end of said first arm provided with biasing means for fictionally engaging a first cam, said first cam engageable coaxially with a first cassette engaging drive means, said first arm central portion being pivotally secured to the cassette body, a second arm having a central portion pivotally secured to the cassette body, one end of said second arm intermittently spaced from the other end of said holder with the other end of said second arm being intermittently pivotable by action of a second cam engageable coaxially with a second cassette engaging drive means, whereby operation of said second drive means causes intermittent contact between said second arm and the other end of said support beam, against the action of said biasing means, so that upon activation of either one of the first and second cassette engaging drive means, the holder and the cleaning body are reciprocated.
Claim 6
Dependent Claim
198 words
A cleaning cassette comprising: a cassette body provided with a mechanism having a cleaning body attached to a reciprocable holder, whose action is suitable for a cleaning magnetic head, said mechanism further including, a first arm, one end of which is pivotally secured to one end of said holder, with the other end of said first arm provided with biasing means for fictionally engaging a first cam, said first cam engageable coaxially with a first cassette engaging drive means, said first arm central portion being pivotally secured to the cassette body, a second arm having a central portion pivotally secured to the cassette body, one end of said second arm intermittently spaced from the other end of said holder with the other end of said second arm being intermittently pivotable by action of a second cam engageable coaxially with a second cassette engaging drive means, whereby operation of said second drive means causes intermittent contact between said second arm and the other end of said support beam, against the action of said biasing means, so that upon activation of either one of the first and second cassette engaging drive means, the holder and the cleaning body are reciprocated.
Claim 7
Dependent Claim
184 words
A cleaning cassette for use in a device having first and second cassette-drive means, comprising: a cassette body; a holder provided with a cleaning body, said holder reciprocable relative to said cassette body; first and second cams adapted to receive the first and second cassette-drive means; a first arm including a first end portion pivotally connected to one end portion of said holder, an opposite end portion adjacent said first cam and an intermediate portion pivotally connected with said cassette body; biasing means for urging said opposite end portion into frictional engagement with said first cam; a second arm including a first end portion adjacent the other end portion of said holder, an opposite end portion located adjacent said second cam and an intermediate portion pivotally connected with said cassette body such that operation of said second cam causes said first end portion of said second arm to intermittently move the holder against the action of said biasing means, whereby either one of said first and second cams may be operated to reciprocate said holder with the other cam remaining in an unoperated condition.
Claim 8
Dependent Claim
184 words
A cleaning cassette for use in a device having first and second cassette-drive means, comprising: a cassette body; a holder provided with a cleaning body, said holder reciprocable relative to said cassette body; first and second cams adapted to receive the first and second cassette-drive means; a first arm including a first end portion pivotally connected to one end portion of said holder, an opposite end portion adjacent said first cam and an intermediate portion pivotally connected with said cassette body; biasing means for urging said opposite end portion into frictional engagement with said first cam; a second arm including a first end portion adjacent the other end portion of said holder, an opposite end portion located adjacent said second cam and an intermediate portion pivotally connected with said cassette body such that operation of said second cam causes said first end portion of said second arm to intermittently move the holder against the action of said biasing means, whereby either one of said first and second cams may be operated to reciprocate said holder with the other cam remaining in an unoperated condition.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-06-01 | 1990-12-01 | 1991-06-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-06-01 | 1994-12-01 | 1995-06-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-06-01 | 1998-12-01 | 1999-06-02 | $7700.00 | Window Closed / Lapsed |