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Class Information
Number: 222/251
Name: Dispensing > With discharge assistant (e.g., impeller, pump, conveyer, movable trap chamber, etc.)
Description: Dispensers having one or more discharge assistants, as impellers, pumps, conveyors, or movable trap chambers, as defined in Lines With Other Classes and Within This Class, Discharge Assistants (e.g., Impellers, Pumps, Conveyors, Movable Trap Chambers, Etc.), in the main class definition.










Sub-classes under this class:

Class Number Class Name Patents
222/335 Actuated by pressure of or suction on material to be dispensed 58
222/408.5 Agitator rigidly mounted on movable closure 11
222/404 Compound motions 38
222/386 Container with follower 614
222/408 Conveyer type with deflector 11
222/406 Deformable discharging elements 19
222/405 Discharge of material from top of supply 77
222/319 Displacement type 53
222/415 Endless belt 48
222/403 Film accumulating type 11
222/394 Fluid pressure 332
222/325 Insertable cartridge or removable container 647
222/333 Motor operated 629
222/322 Movable element actuator projection through outlet 24
222/344 Movable or conveyer-type trap chamber 19
222/252 Plural 62
222/409 Reciprocating (including oscillating) 59
222/329 Removable or movable depending cups for rotors 1
222/410 Rotary 138
222/336 With biasing means for discharge assistant and/or its casing 76
222/318 With bypass or return to supply 282
222/323 With container handle or handgrip 55
222/282 With discharge volume varying means 43
222/328 With material discharge guide on container side of discharge assistant 21
222/372 With material supply container and discharge assistant with casing (e.g., supply container and pump) 85
222/320 With movable nozzle interconnected therewith 76
222/330 With plural material outlets 136
222/343 With retractable projections 3
222/342 With scraper or wiper for or carried by discharge assistant 74
222/332 With vent passage for movable trap chamber 7


Patents under this class:
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Patent Number Title Of Patent Date Issued
8677932 Apparatus for metering granular source material in a thin film vapor deposition apparatus Mar. 25, 2014
8597592 Microvalve controlled precision fluid dispensing apparatus with a self-purging feature and method for use Dec. 3, 2013
8579142 Assembly of a container and a closure Nov. 12, 2013
8529508 Fluid ejection device and medical device Sep. 10, 2013
8474654 In-store sample dispenser Jul. 2, 2013
8459203 Powder feeding method, powder feeding apparatus and electrostatical powder spray coating apparatus Jun. 11, 2013
8443985 Liquid supplying member, negative pressure unit, and liquid discharging apparatus May. 21, 2013
8434318 Refrigerator May. 7, 2013
8376207 Micro-fluidic injection molded solder (IMS) Feb. 19, 2013
8323585 Use of fluid aspiration/dispensing tip as a microcentrifuge tube Dec. 4, 2012
8136714 Micro-fluidic injection molded solder (IMS) Mar. 20, 2012
8119054 Method and apparatus for manufacturing a molded product Feb. 21, 2012
8025187 In-store combined sample dispenser and merchandising product display Sep. 27, 2011
8011317 Advanced mixing system for integrated tool having site-isolated reactors Sep. 6, 2011
8003768 System for providing 20% ethanol solutions that meet bioburden and endotoxin requirements Aug. 23, 2011
7980446 Micro-fluidic injection molded solder (IMS) Jul. 19, 2011
7931817 Additive dispensing device and a thermally activated additive dispensing filter having the additive dispensing device Apr. 26, 2011
7632251 Volume adjustable, micro-injection device Dec. 15, 2009
7585415 Fluid storage and purification method and system Sep. 8, 2009
7530477 Combination liquid dispenser and electrochemical cell May. 12, 2009
7452508 Aspirating and mixing of liquids within a probe tip Nov. 18, 2008
7448857 Fluid pump and cartridge Nov. 11, 2008
RE40539 Fluid pump and cartridge Oct. 14, 2008
7420341 Power tool and motor controller Sep. 2, 2008
7381269 System and method to supply chemical during semiconductor device fabrication Jun. 3, 2008
7378058 Method and apparatus for modifying pressure within a fluid dispenser May. 27, 2008
7351385 System for enabling landfill disposal of kitchen waste oil/grease Apr. 1, 2008
7063298 Holder for grease gun Jun. 20, 2006
6925751 Automated pest control dust applicator device for remote applications Aug. 9, 2005
6924257 Device and method for generating a liquid detergent concentrate from a solid detergent and a method for washing a vehicle Aug. 2, 2005
6889871 Internally generated rotor set for low viscosity and abrasive metering applications May. 10, 2005
6790011 Device for forming, transporting and diffusing small calibrated amounts of liquid Sep. 14, 2004
6703005 Process for the production of a deodorant or antiperspirant product Mar. 9, 2004
6645924 Device and method for generating a liquid detergent concentrate from a solid detergent and a method for washing a vehicle Nov. 11, 2003
6588345 System for improving the flowability of hygroscopic materials from a hopper Jul. 8, 2003
6522834 On-demand direct electrical resistance heating system and method thereof for heating liquid Feb. 18, 2003
6511301 Fluid pump and cartridge Jan. 28, 2003
6432354 Method and apparatus for feeding magnetic powder and method for manufacturing magnet Aug. 13, 2002
6319414 Water purifying and dispensing apparatus Nov. 20, 2001
6238576 Chemical liquid supply method and apparatus thereof May. 29, 2001
6123839 Automatic fluid dispensing system Sep. 26, 2000
6024254 Apparatus for metering viscous compositions Feb. 15, 2000
5887762 Replaceable valve system Mar. 30, 1999
5260062 Anti-plaque and anti-tartar dentifrices in plastic pump dispensers Nov. 9, 1993
5165580 Optical illusion water display device Nov. 24, 1992
4612964 Combined auger and air-type valve bag filling machine Sep. 23, 1986
4508242 Toothpaste extractor Apr. 2, 1985
4215103 Method for producing a preparation for diagnostic radiology and apparatus therefor Jul. 29, 1980
4190410 Cookie forming apparatus Feb. 26, 1980
4178929 Dosing device for germ-free measurements and filling of liquid material Dec. 18, 1979

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