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US4811138A Expired / Lapsed US ⏱️ 0.0 years remaining

Cassette loading device of video cassette tape recorder

Assignee: LG Electronics Inc
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Filing: 1986-12-05
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Granted: 1989-03-07
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Expires: 2006-12-05
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Abstract

Abstract A cassette loading device comprising a cassette holder having guide groove, a cover plate connected to the cassette holder by a connecting member which includes a guide groove, and a U-shaped leaf spring attached to the cover plate so that the cassette holder is provided with a large space in the vicinity of an opening thereof for advantageously and easily inserting and removing the tape cassette into and from the cassette holder.

Inventors

  • 👤 Jong D. Park

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-03 07:37
CPC Classifications
G; G11; G11B; G11B33/00; G11B33/02; G11B15/00; G11B15/675; G11B15/67563; G11B15/67565

Claims Analysis

Total Claims: 5
Claim 1
Independent Claim 284 words
A cassette loading device of a video cassette tape recorder comprising: a housing, a bracket secured on said housing, said bracket including a coil spring at a rear portion and a first guiding groove disposed at a front portion thereof, a cassette holder movably mounted to said bracket for receiving and holding a tape cassette, said cassette holder including a second guiding groove disposed at a front portion thereof, a cover plate for covering said cassette holder a connecting member movably connecting to the front portion of said cassette holder to a front portion of said cover plate, said connecting member including a third guiding groove disposed thereon, a leaf spring connected between a rear portion of said cover plate and a rear portion of said cassette holder for biasing said cover plate away from said cassette holder, and a pair of intercrossing levers each having a first end and a second end pivotably connected to the center portion of said cassette holder through a central pivot pin, each intercrossing lever having a guiding pin at a first end thereof, one of said guiding pins moving along said first guiding groove and the other of said guiding pins moving along said second guiding groove together with said third guiding groove, the second end of one of said intercrossing levers being connected to the rear portion of said cassette holder through a first pivot pin and the second end of the other intercrossing lever being connected to said coil spring at second ends thereof through a second pivot pin, whereby, upon operating the cassette holder of the cassette loading device, the tape cassette is advantageously and readily inserted to and removed from the cassette holder.
Claim 2
Dependent Claim 284 words
A cassette loading device of a video cassette tape recorder comprising: a housing, a bracket secured on said housing, said bracket including a coil spring at a rear portion and a first guiding groove disposed at a front portion thereof, a cassette holder movably mounted to said bracket for receiving and holding a tape cassette, said cassette holder including a second guiding groove disposed at a front portion thereof, a cover plate for covering said cassette holder a connecting member movably connecting to the front portion of said cassette holder to a front portion of said cover plate, said connecting member including a third guiding groove disposed thereon, a leaf spring connected between a rear portion of said cover plate and a rear portion of said cassette holder for biasing said cover plate away from said cassette holder, and a pair of intercrossing levers each having a first end and a second end pivotably connected to the center portion of said cassette holder through a central pivot pin, each intercrossing lever having a guiding pin at a first end thereof, one of said guiding pins moving along said first guiding groove and the other of said guiding pins moving along said second guiding groove together with said third guiding groove, the second end of one of said intercrossing levers being connected to the rear portion of said cassette holder through a first pivot pin and the second end of the other intercrossing lever being connected to said coil spring at second ends thereof through a second pivot pin, whereby, upon operating the cassette holder of the cassette loading device, the tape cassette is advantageously and readily inserted to and removed from the cassette holder.
Claim 3
Dependent Claim 31 words
The cassette loading device of claim 1, wherein, the first, second, and third guiding grooves have a V-shaped configuration, respectively, said first guiding groove facing said second and third guiding grooves.
Claim 4
Dependent Claim 15 words
The cassette loading device of claim 1, wherein the leaf spring has a U-shaped configuration.
Claim 5
Dependent Claim 21 words
The cassette loading device of claim 1, wherein one of the levers connected to the coil spring has a L-shaped configuration.

References Cited (Backward Citations)

US3394898A Cited
US3766327A Cited
GB2033642A Cited
US4686593A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1992-03-06 1992-09-05 1993-03-07 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1996-03-06 1996-09-05 1997-03-07 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 2000-03-06 2000-09-05 2001-03-07 $7700.00 Window Closed / Lapsed

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