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Class Information
Number: 222/340
Name: Dispensing > With discharge assistant (e.g., impeller, pump, conveyer, movable trap chamber, etc.) > With biasing means for discharge assistant and/or its casing > For reciprocating piston on follower-type impeller
Description: Dispensers in which the device is either a piston or a follower type impeller having a reciprocating motion and operating in either the supply receptacle or in a casing which receives material from the supply container, so that motion of the piston or follower applies pressure to the material to cause discharge.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7455196 |
Support apparatus for a manual grease gun |
Nov. 25, 2008 |
| 7455198 |
Trigger forward pivot limit for a trigger sprayer |
Nov. 25, 2008 |
| 7431181 |
Fluid-dispensing pump and container provided therewith |
Oct. 7, 2008 |
| 7429353 |
Method and apparatus for injecting a metered quantity of a liquid into a chamber |
Sep. 30, 2008 |
| 7377408 |
Fluid dispenser |
May. 27, 2008 |
| 7341168 |
Pump assembly with piston |
Mar. 11, 2008 |
| 7287672 |
Fluid dispenser member and a dispenser including such a member |
Oct. 30, 2007 |
| 7243820 |
Tappet pump, mainly for cosmetic products |
Jul. 17, 2007 |
| 7219817 |
Fluid slug launcher |
May. 22, 2007 |
| 7198178 |
Pump assembly with piston |
Apr. 3, 2007 |
| 7182228 |
Cartridge with connection for a pump-drive and fluid handling system |
Feb. 27, 2007 |
| 7182226 |
Dosing device comprising a medium reservoir and corresponding pump device |
Feb. 27, 2007 |
| 7175056 |
Simplified sprayer device |
Feb. 13, 2007 |
| 7111757 |
Device and method for the volumetric measurement and dispensing of liquids |
Sep. 26, 2006 |
| 6955278 |
Dispenser for paste-like products |
Oct. 18, 2005 |
| 6926175 |
Constant discharge structure for nozzle head lowering type vacuum cosmetic container |
Aug. 9, 2005 |
| 6918515 |
Liquid container |
Jul. 19, 2005 |
| 6702158 |
Knocking-type liquid container |
Mar. 9, 2004 |
| 6681962 |
Liquid dispensing pump |
Jan. 27, 2004 |
| 6637671 |
Reduced risk dispensing of petroleum distillate based household products |
Oct. 28, 2003 |
| 6581805 |
Viscous fluid compound applicator |
Jun. 24, 2003 |
| 6564976 |
Visco elastic displacement controller |
May. 20, 2003 |
| 6550643 |
Dispenser for viscous fluids |
Apr. 22, 2003 |
| 6536630 |
Structure for dispensing emulsion |
Mar. 25, 2003 |
| 6481596 |
Metering device |
Nov. 19, 2002 |
| 6478197 |
Spring-effect pushbutton |
Nov. 12, 2002 |
| 6453795 |
Locking mechanism for a spring-actuated device |
Sep. 24, 2002 |
| 6415956 |
Hand holdable pump spray apparatus |
Jul. 9, 2002 |
| 6364172 |
Liquid dispenser and assembly methods therefor |
Apr. 2, 2002 |
| 6308865 |
Container-mounted pump means with external restoring spring |
Oct. 30, 2001 |
| 6296154 |
Pump assembly with one piece piston |
Oct. 2, 2001 |
| 6223936 |
Device for dispensing fluids |
May. 1, 2001 |
| 6223954 |
Pump actuator with plastic spring |
May. 1, 2001 |
| 6189739 |
Pump dispenser with threshold actuation and restoring spring |
Feb. 20, 2001 |
| 6186369 |
Pump |
Feb. 13, 2001 |
| 6182866 |
Manually operated dispensing device having a friction brake acting upon a thrust rod |
Feb. 6, 2001 |
| 6170706 |
Hand holdable pump spray system |
Jan. 9, 2001 |
| 6170715 |
Beverage dispenser |
Jan. 9, 2001 |
| 6136352 |
Sanitary novelty candy product |
Oct. 24, 2000 |
| 6126043 |
Reusable portable pressurized fluid container |
Oct. 3, 2000 |
| 6116472 |
Trigger acutated pump sprayer |
Sep. 12, 2000 |
| 6089414 |
Pump assembly with one piece piston |
Jul. 18, 2000 |
| 6015067 |
Bottle top dispenser |
Jan. 18, 2000 |
| 6010036 |
Dispenser for liquid or pasty materials |
Jan. 4, 2000 |
| 5992704 |
Dispenser for media and method for manufacturing a discharge device or the like |
Nov. 30, 1999 |
| 5984149 |
All plastic trigger pump |
Nov. 16, 1999 |
| 5947341 |
Trigger sprayer having rear hood supporting a return spring |
Sep. 7, 1999 |
| 5921442 |
Manually operated self defense device |
Jul. 13, 1999 |
| 5908143 |
Single shot liquid dispenser |
Jun. 1, 1999 |
| 5884818 |
Grease gun |
Mar. 23, 1999 |
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