Patent US4167543A successfully refreshed from Google Patents.
Patent US4811138A successfully refreshed from Google Patents.
US4811138A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cassette loading device of video cassette tape recorder
Assignee: LG Electronics Inc
•
Filing: 1986-12-05
•
Granted: 1989-03-07
•
Expires: 2006-12-05
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)
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 |