Trigger pump sprayer

US8322630B2 · 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 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. A bimodal distribution of particle sizes is obtained under two different operating conditions. The sprayer/liquid combination according to the present invention compresses the difference between the two modes, without requiring undue work by the operator. 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.