B65G 19/165
The impellers being endless helical springs
Official title: {the impellers being endless helical springs}
B65G19/165 (The impellers being endless helical springs) appears on 7 US grants and 0 published applications in this corpus.
Search patents in B65G- Granted patents
- 7
- Published applications
- 0
- Assignees
- 3
- Inventors
- 10
- Latest grant
- 28 Jul 1998
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 2 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 2 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Feed conveyor28 Jul 1998US 5,784,996 ACTB, Inc.
- Toner storage device and supply mechanism for image forming17 Mar 1998US 5,729,804 ASeiko Epson Corporation
- Feed conveyor25 Feb 1997US 5,605,113 ACTB, Inc.
- Image forming apparatus with toner transport mechanism incorporated therein16 Jul 1996US 5,537,191 ASeiko Epson Corporation
- Intake cup apparatus26 May 1987US 4,667,623 AChore-Time Equipment, Inc.
No published applications in this class yet.
Most cited
By later US patents
- Feed distribution apparatus12US 4,495,894 AChore-Time Equipment, Inc. · 1985
- Rotating helical conveyor system10US 4,640,230 AChore-Time Equipment, Inc. · 1987
- Image forming apparatus with toner transport mechanism incorporated therein8US 5,537,191 ASeiko Epson Corporation · 1996
- Intake cup apparatus6US 4,667,623 AChore-Time Equipment, Inc. · 1987
- Toner storage device and supply mechanism for image forming6US 5,729,804 ASeiko Epson Corporation · 1998