G11B 15/6658
With two loading rings rotating in opposite directions
Official title: {with two loading rings rotating in opposite directions}
G11B15/6658 (With two loading rings rotating in opposite directions) appears on 28 US grants and 1 published applications in this corpus.
Search patents in G11B- Granted patents
- 28
- Published applications
- 1
- Assignees
- 11
- Inventors
- 50
- Latest grant
- 18 Jan 2000
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 3 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 2 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 2 | 0 |
| 1991 | 2 | 0 |
| 1992 | 3 | 0 |
| 1993 | 3 | 0 |
| 1994 | 2 | 0 |
| 1995 | 0 | 0 |
| 1996 | 2 | 0 |
| 1997 | 1 | 0 |
| 1998 | 3 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- Tape recorder and play-back device having upper and lower ring gears18 Jan 2000US 6,016,235 AFunai Electric Co., Ltd.
- Magnetic tape recording and reproducing plug-in unit22 Sep 1998US 5,812,340 AHitachi, Ltd.
- Loading mechanism of magnetic recording-reproduction apparatus and method of assembling the mechanism1 Sep 1998US 5,801,898 ASanyo Electric Co., Ltd.
- Loading post driving device having first and second loading rings held only by a loading ring guide4 Aug 1998US 5,790,342 AMatsushita Electric Industrial Co., Ltd.
- Magnetic recording/playback apparatus having a leaf-type resilient member which is provided between a guide post and a type loading member and is urged against the guide post3 Jun 1997US 5,636,080 AMatsushita Electric Industrial Co., Ltd.
Most cited
By later US patents
- High speed feeding and rewinding mechanism in a magnetic tape recording and reproducing apparatus23US 4,121,267 AMatsushita Electric Industrial Co., Ltd. · 1978
- Tape casette loading system compatible with two different sized cassettes15US 5,025,331 AVictor Company of Japan, Ltd. · 1991
- Magnetic recording and reproducing apparatus of rotating head type14US 4,126,888 AMatsushita Electric Industrial Co., Ltd. · 1978
- Magnetic tape recording device14US 4,520,411 ASony Corporation · 1985
- Apparatus for detecting tape-end14US 4,991,039 AHitachi, Ltd. · 1991