Patent Number: 6,253,969

Title: Dispenser for viscous material

Abstract: A housing has a first, dispensing end and a second, opposite end. A lever is squeezed against the housing to move a plunger toward the dispensing end. When fully squeezed, the lever extends parallel to the plunger and the longitudinal axis of the housing. The extent to which the plunger advances may be adjusted by relocating the pivot axis defined between the lever and the housing. A resilient washer is mounted on the shaft of the plunger and disposed behind a shoulder on the housing. The resilient washer deflects and/or stretches forward when the plunger advances, and urges the plunger rearward upon release of the lever.

Inventors: Nelson; Thomas Dean (Maplewood, MN), Anderson; Douglas Grinnell (St. Paul, MN), Mackert; Ross Austin (St. Louis Park, MN)

Assignee: Ecolab Inc.

International Classification: B05C 17/005 (20060101); B05C 17/01 (20060101); B67D 005/00 ()

Expiration Date: 07/03/2018