| |
 |
|
Class Information
Number: 222/319
Name: Dispensing > With discharge assistant (e.g., impeller, pump, conveyer, movable trap chamber, etc.) > Displacement type
Description: Dispensers in which the outlet for material to be dispensed from a supply receptacle or trap chamber is above the material surface level thereof, and there are structural means (as distinguished from fluids) which enters the mass of material in a supply receptacle, with a resultant displacement of a volume of material equal to the volume of that portion of the structural means that has entered the material, and thus cause the upper surface of the material to rise to or above the level of the outlet to overflow for discharge or for a step preliminary to discharge.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7051901 |
Air barrier device for protecting liquid fluids in opened containers |
May. 30, 2006 |
| 6913447 |
Metering pump with varying piston cylinders, and with independently adjustable piston strokes |
Jul. 5, 2005 |
| 6889871 |
Internally generated rotor set for low viscosity and abrasive metering applications |
May. 10, 2005 |
| 6866881 |
Dispensing system and method |
Mar. 15, 2005 |
| 6419127 |
Apparatus for raising concrete members |
Jul. 16, 2002 |
| 6321942 |
Discharge device for flowable media using a thrust piston pump |
Nov. 27, 2001 |
| 6102251 |
Method and apparatus for extracting excess material from containers |
Aug. 15, 2000 |
| 5887752 |
Method and apparatus for extracting excess material from containers |
Mar. 30, 1999 |
| 5862959 |
Water dispensing system for a brewing machine |
Jan. 26, 1999 |
| 5848739 |
Pump dispenser for flowable materials |
Dec. 15, 1998 |
| 5249645 |
Pressure fluid actuated lubricator |
Oct. 5, 1993 |
| 5118401 |
Apparatus for disinfecting an instrument |
Jun. 2, 1992 |
| 5092496 |
Dispenser for flowable materials having a piston with a flexible sealing rim |
Mar. 3, 1992 |
| 5027978 |
Method and apparatus for precision pumping, ratioing, and dispensing of work fluid(s) |
Jul. 2, 1991 |
| 4969747 |
Reverse flow dispensing mixer |
Nov. 13, 1990 |
| 4961520 |
Co-dispensing container and method of filling same |
Oct. 9, 1990 |
| 4946076 |
Dispenser for pasty compositions |
Aug. 7, 1990 |
| 4921133 |
Method and apparatus for precision pumping, ratioing and dispensing of work fluids |
May. 1, 1990 |
| 4905872 |
Vessel for injecting bonding agent |
Mar. 6, 1990 |
| 4821921 |
Liquid dispensing apparatus |
Apr. 18, 1989 |
| 4810659 |
Process for injecting a minute volume of a solution and an apparatus therefor |
Mar. 7, 1989 |
| 4805810 |
Dosating dispenser for topical formulations |
Feb. 21, 1989 |
| 4796787 |
Apparatus for precisely measuring and supplying liquid |
Jan. 10, 1989 |
| 4767032 |
Paste dispenser |
Aug. 30, 1988 |
| 4712715 |
Device for injecting a fixing agent into a drilled hole for anchoring a fastening element inserted in a drilled hole |
Dec. 15, 1987 |
| 4693984 |
Method and apparatus for sequential fractionation |
Sep. 15, 1987 |
| 4641760 |
Inflatable bags |
Feb. 10, 1987 |
| 4609129 |
Device for injecting a fixing agent into a drilled hole for anchoring a fastening element inserted in the drilled hole |
Sep. 2, 1986 |
| 4479592 |
Dispenser |
Oct. 30, 1984 |
| 4334787 |
Two-component dosing apparatus |
Jun. 15, 1982 |
| 4263498 |
Expansion chamber arrangement for water heating and dispensing device |
Apr. 21, 1981 |
| 4174055 |
Non-aerosol pressure dispenser |
Nov. 13, 1979 |
| 4168942 |
Extrusion apparatus and method |
Sep. 25, 1979 |
| 4012753 |
Film processor |
Mar. 15, 1977 |
| 4008516 |
Protective system for evacuating drums |
Feb. 22, 1977 |
|
|
|
