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Class Information
Number: 198/658
Name: Conveyors: power-driven > Conveyor section > Screw > Including rotating load confining means (e.g., tumbler)
Description: Apparatus wherein the helical surface formation extends from or is integral with the inner surface of a rotatable tubular member.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7360639 |
Hot rotary screw pump |
Apr. 22, 2008 |
| 7314131 |
Elevating conveyor |
Jan. 1, 2008 |
| 7168909 |
Article stacking apparatus and method |
Jan. 30, 2007 |
| 6763932 |
Particulate material handling systems |
Jul. 20, 2004 |
| 6722491 |
Feeder tube for bulk product |
Apr. 20, 2004 |
| 6193053 |
Concentric auger feeder |
Feb. 27, 2001 |
| 6152281 |
Magnetic bulk feeder for electronic components |
Nov. 28, 2000 |
| 5709296 |
Feeder tube |
Jan. 20, 1998 |
| 5526920 |
Gate closure for conveyor |
Jun. 18, 1996 |
| 5396983 |
Cleaning device, particularly for residual concrete reprocessing installations |
Mar. 14, 1995 |
| 5230431 |
Vertical screening device with feeding screw |
Jul. 27, 1993 |
| 5129505 |
Paper metering device |
Jul. 14, 1992 |
| 5105587 |
Apparatus for surface treatment of workpieces |
Apr. 21, 1992 |
| 5099985 |
Unitary screw conveyor apparatus |
Mar. 31, 1992 |
| 5076704 |
Methods of and apparatus for blending and elevating materials |
Dec. 31, 1991 |
| 5054657 |
Sanitary bulk food dispenser with rotary cone feeder |
Oct. 8, 1991 |
| 5018318 |
Apparatus for surface treatment of workpieces |
May. 28, 1991 |
| 4984678 |
Device for the separation and alignment of objects and a sorting installation for using same |
Jan. 15, 1991 |
| 4852719 |
Modular screw conveyor |
Aug. 1, 1989 |
| 4844232 |
Installation for the surface treatment of workpieces |
Jul. 4, 1989 |
| 4793467 |
Apparatus for unloading bulk material |
Dec. 27, 1988 |
| 4719933 |
Machine for washing particulate workpieces |
Jan. 19, 1988 |
| 4717014 |
Screw conveyor |
Jan. 5, 1988 |
| 4621726 |
Sealing device for relatively rotating surfaces in a conveyor |
Nov. 11, 1986 |
| 4603774 |
Vertical conveyor for bulk goods |
Aug. 5, 1986 |
| 4467910 |
Vertical conveyor for bulk goods |
Aug. 28, 1984 |
| 4460286 |
Centrifugal ball elevator for microballistic printer |
Jul. 17, 1984 |
| 4391108 |
Drum for a continuously operating laundry processing machine |
Jul. 5, 1983 |
| 4351627 |
Device with screw conveyor for discharging bulk material |
Sep. 28, 1982 |
| 4343394 |
Apparatus for handling fluent material |
Aug. 10, 1982 |
| 4266902 |
Transport container |
May. 12, 1981 |
| 4222502 |
Meter and dispensing system for abrasive materials |
Sep. 16, 1980 |
| 4220242 |
Screw conveyor with intermediate bearing |
Sep. 2, 1980 |
| 4156392 |
Coal conveying system |
May. 29, 1979 |
| 4125437 |
Distillation system |
Nov. 14, 1978 |
| 4103605 |
Meatball cooker |
Aug. 1, 1978 |
| 4077527 |
Apparatus for dispensing and transporting fine materials |
Mar. 7, 1978 |
| 4057225 |
Screw feeder for granular material |
Nov. 8, 1977 |
| 4038013 |
Spinneret apparatus with particulate material conveying means |
Jul. 26, 1977 |
| 4014431 |
Spiral tube conveyor |
Mar. 29, 1977 |
| 4003115 |
Method of making centrifuge conveyor |
Jan. 18, 1977 |
| 3990590 |
Device for collecting materials in bulk inside a tank |
Nov. 9, 1976 |
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