Trigger pump sprayer having favorable particle size distribution with specified liquids

US8322631B2 · kind B2 · utility

Assignee

• The Procter & Gamble Company · US

Inventors

• James Samuel Richardson · Morden, GB
• Robin Lefebvre · Mechelen, BE
• Victor Klabbers · Brussels, BE
• Elizabeth Jackson Glass · Cincinnati, US
• Michael Alan John Moss · Prudhoe, GB
• Mitsuaki Shaduki · Sanyo Onoda, JP

Key dates

• Filing date: May 10, 2010
• Grant date: Dec 4, 2012
• Expiry date: Mar 25, 2031

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B05B11/1077
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

A trigger pump sprayer in combination with a liquid dispensed from the sprayer. The sprayer is suitable for dispensing liquid from a reservoir, through a nozzle into particles. The trigger sprayer provides for efficacious particle size distributions of the liquids, when sprayed under non-ideal conditions. Non-ideal conditions include only partial strokes of the trigger, rather than full strokes and relatively slow trigger strokes. The trigger sprayer advantageously delivers a particle size distribution suitable for liquids having particular rheological properties. The advantageous particle size distribution difference is accomplished by using a precompression piston which reciprocates in response to trigger strokes, and selecting a liquid having appropriate properties to correspond to the trigger pump operating characteristics.