Patent · US Expired

Trigger sprayer for dispensing liquids combined from separate compartments

US5711457A · kind A · utility

27Cited by
9References
7Claims
0Family size

Assignee

Inventors

Key dates

Filing dateOct 10, 1996
Grant dateJan 27, 1998
Priority date—
Expiry dateOct 10, 2016

Classification

  • Technology area (CPC B)Performing Operations; Transporting
  • CPC primaryB05B11/1085
  • WIPO fieldChemical engineering
  • WIPO sectorChemistry

Abstract

A trigger actuated sprayer for dispensing disparate liquids separately stored in separate liquid compartments includes a pair of axially aligned, interconnected pistons of relatively larger and smaller diameter reciprocable in unison within relatively larger and smaller diameter cylinders for therewith defining larger and smaller variable volume pump chambers, the smaller diameter piston valving one fluid from its chamber to be combined with the other of the fluids in the other chamber during each compression stroke of the pistons. The combined liquids are dispensed from the chamber upon trigger actuation during each compression stroke.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.