초록 ▼

A hand-held apparatus for spraying foam comprises (a) a manually-operated dispensing pump capable of receiving a foamable liquid from a suitable container and ejecting it into the atmosphere through an atomizing nozzle, thereby forming a spray from such liquid and projecting it outwardly from the no

A hand-held apparatus for spraying foam comprises (a) a manually-operated dispensing pump capable of receiving a foamable liquid from a suitable container and ejecting it into the atmosphere through an atomizing nozzle, thereby forming a spray from such liquid and projecting it outwardly from the nozzle in a predetermined spray pattern, and (b) foam-forming device including an air inlet and a screen retained in the path of the spray. The screen can be retained in a foam-forming position by suitable means such as a housing operatively associated with the dispensing pump. Substantially all the spray passes through the foam-forming device without contact except by the screen, thereby generating foam with little modification of the predetermined spray pattern.

대표청구항 ▼

A hand-held, foam-spraying apparatus for producing a foam comprising a liquid matrix containing discrete air bubbles and comprising in cooperative combination: (a) a trigger-operated hand dispensing pump, including an atomizing nozzle, for drawing a foamable liquid from a container and ejecting it i

A hand-held, foam-spraying apparatus for producing a foam comprising a liquid matrix containing discrete air bubbles and comprising in cooperative combination: (a) a trigger-operated hand dispensing pump, including an atomizing nozzle, for drawing a foamable liquid from a container and ejecting it into the atmosphere through the atomizing nozzle, thereby forming a spray from such liquid and projecting the spray in a predetermined pattern outwardly from the atomizing nozzle, and (b) foam-forming means operatively associated with the dispensing pump for producing foam from the spray using air external to the apparatus and without substantially modifying the predetermined spray pattern, the foam-forming means consisting essentially of (1) a screen having a size generally in the range of about 60 to 200 mesh U.S. Sieve Series and being retained in the path of the spray a distance from the atomizing nozzle which is suitable for producing the result of a relatively dry foam, and (2) means for introducing air into the spray so that the spray is permitted to foam upon contact with the screen; the foam-forming means permitting the passage of substantially all the spray therethrough without contact except by the screen and being effective for generating a relatively dry foam having reduced tendency to drip when deposited on a vertical surface.