B41J 19/80
Pawl-and-ratchet mechanisms
B41J19/80 (Pawl-and-ratchet mechanisms) appears on 18 US grants and 0 published applications in this corpus.
Search patents in B41J- Granted patents
- 18
- Published applications
- 0
- Assignees
- 10
- Inventors
- 28
- Latest grant
- 12 Sep 1995
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 0 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 3 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 2 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 2 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 2 | 0 |
By publication year. Applications have been published since 2001.
Subgroups
Granted patents
Recent patents
- Printing apparatus12 Sep 1995US 5,449,241 AMatsushita Electric Industrial Co., Ltd.
- Single motor scanning-head printer10 Jan 1995US 5,380,106 AHewlett-Packard Company
- Platen knob15 Feb 1994US 5,286,124 AMatsushita Electric Industrial Co., Ltd.
- Recording apparatus28 May 1991US 5,018,886 ACanon Kabushiki Kaisha
- Printing apparatus having a rotatable member rotatable in incremental steps smaller than the pitch of a detent gear and including means for accurately retaining the rotatable member at a predetermined position when the detent mechanism is inoperable20 Nov 1990US 4,971,466 ACanon Kabushiki Kaisha
No published applications in this class yet.
Most cited
By later US patents
- Printing apparatus with paper positioning tractor means and escapement means13US 3,987,884 A1976
- Line feed carrier return mechanism for movable printing point typewriter6US 4,388,007 ATriumph-Adler A. G. fur Buro-und Informationstechnik · 1983
- Recording apparatus6US 5,018,886 ACanon Kabushiki Kaisha · 1991
- Electronic typewriter5US 4,390,293 AIng. C. Olivetti & C., S.p.A. · 1983
- Printer with paper feed roller disengagement mechanism5US 4,715,737 AAlps Electric Co., Ltd. · 1987