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Class Information
Number: 222/335
Name: Dispensing > With discharge assistant (e.g., impeller, pump, conveyer, movable trap chamber, etc.) > Actuated by pressure of or suction on material to be dispensed
Description: Dispensers in which there is a discharge assistant which is actuated by the pressure of the material being dispensed, or by suction on such material, the pressure of suction creating means not being claimed.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7521256 |
Method and a device for defining a small volume of a liquid sample |
Apr. 21, 2009 |
| 7229594 |
Device for dispensing accurately-controlled small doses of liquid |
Jun. 12, 2007 |
| 6834777 |
Closed loop control over delivery of liquid material to semiconductor processing tool |
Dec. 28, 2004 |
| 6789702 |
System for dispensing multi-component products |
Sep. 14, 2004 |
| 6719175 |
Draft system for beverages |
Apr. 13, 2004 |
| 6561381 |
Closed loop control over delivery of liquid material to semiconductor processing tool |
May. 13, 2003 |
| 6520186 |
Reshapable hair styling composition comprising silicon-containing polycondensates |
Feb. 18, 2003 |
| 6394320 |
DISPOSABLE PACKAGING DEVICE THAT DISPENSES CONTENTS BY MOUTH/BREATH, WITH FRONT-END LOADING, A BUILT-IN BARRIER TO INSURE CONTENTS ARE DISPENSED ONLY IN APPROPRIATE DIRECTION, AND TEAR-AWAY SE |
May. 28, 2002 |
| 5992684 |
Water dispensing device |
Nov. 30, 1999 |
| 5884820 |
Dispensers for liquid products |
Mar. 23, 1999 |
| 5667105 |
Portion control valve and system and method utilizing the same |
Sep. 16, 1997 |
| 5230445 |
Micro delivery valve |
Jul. 27, 1993 |
| 5215216 |
Water flow responsive soap dispenser |
Jun. 1, 1993 |
| 5183187 |
Piston operated fluid dispensing device |
Feb. 2, 1993 |
| 5149551 |
Apparatus for and method of dispensing food product such as hard ice cream |
Sep. 22, 1992 |
| 5100031 |
Method and apparatus for dosing and dispensing mercury into discharge lamps |
Mar. 31, 1992 |
| 5085345 |
Hydraulic dispenser |
Feb. 4, 1992 |
| 4862834 |
Open hot water heater |
Sep. 5, 1989 |
| 4810659 |
Process for injecting a minute volume of a solution and an apparatus therefor |
Mar. 7, 1989 |
| 4736873 |
Self powered liquor metering pump |
Apr. 12, 1988 |
| 4690309 |
Portable, self-powered, adjustable herbicide dispensing system |
Sep. 1, 1987 |
| 4650099 |
Liquid dispensing gun |
Mar. 17, 1987 |
| 4638924 |
Self mixing sprayer |
Jan. 27, 1987 |
| 4591077 |
Continuous discharge dispenser |
May. 27, 1986 |
| 4580703 |
Fluid metering apparatus |
Apr. 8, 1986 |
| 4521181 |
Fuel fume generator kit |
Jun. 4, 1985 |
| 4494913 |
Positive displacement injector |
Jan. 22, 1985 |
| 4452380 |
Portable apportioning apparatus |
Jun. 5, 1984 |
| 4433797 |
Metered quantity dispensing valve |
Feb. 28, 1984 |
| 4371101 |
Filtering screen for use in apparatus for the dosing of powdered material |
Feb. 1, 1983 |
| 4335835 |
Device for the intravenous or enteric infusion of liquids into the human body at a predetermined constant rate |
Jun. 22, 1982 |
| 4301795 |
Vaccination gun |
Nov. 24, 1981 |
| 4271989 |
Micro-metering system |
Jun. 9, 1981 |
| 4241853 |
Dispenser for either continuous or intermittent discharge |
Dec. 30, 1980 |
| 4191313 |
Trigger operated dispenser with means for obtaining continuous or intermittent discharge |
Mar. 4, 1980 |
| 4176764 |
Mechanically operated mixing dispenser having a plurality of expansible chambers and a plurality of accumulating chambers |
Dec. 4, 1979 |
| 4174052 |
Mechanically operated dispensing device with expansible bulb |
Nov. 13, 1979 |
| 4170319 |
Apparatus for controlling fluid flow in a fluid delivery and mixing system utilizing positive displacement devices |
Oct. 9, 1979 |
| 4169544 |
Mixing and distributing apparatus for gasoline and oil |
Oct. 2, 1979 |
| 4167941 |
Mechanically operated dispensing device for increasing discharge pressure and dispensing time |
Sep. 18, 1979 |
| 4108278 |
Constant-quantity oil distributing valve for use in central lubrication system |
Aug. 22, 1978 |
| 4108335 |
Apparatus for proportioning and mixing liquids |
Aug. 22, 1978 |
| 4079866 |
Lubricant metering valve in lubricating systems |
Mar. 21, 1978 |
| RE29405 |
Spray apparatus |
Sep. 20, 1977 |
| 4023524 |
Toy spray painting system |
May. 17, 1977 |
| 4019652 |
Fluid delivery and mixing systems |
Apr. 26, 1977 |
| 4006847 |
Dispensing apparatus |
Feb. 8, 1977 |
| 3976250 |
Irrigation device |
Aug. 24, 1976 |
| 3958725 |
Metering valve for lubrication injector |
May. 25, 1976 |
| 3940069 |
Spray apparatus |
Feb. 24, 1976 |
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