US 4,269,797 AGranted

Bubble generator

AssigneeNikki Co., Ltd.

InventorsToshio Mikiya, Tadahisa Mogaki, Nobuyuki Nozawa

Life of this patent

Estimating the term…

Abstract

A bubble generator is comprised of a bubble plate and an adjuster plate slidably coupled to each other, the former being provided with parallel small bubble holes rows and the latter with parallel small slot rows, large slot rows and large bubble hole rows. Mutual sliding between the plates allows three different modes of bubble generation at user's free choice.

Claims6

Dependent claims

A bubble generator comprising

a bubble plate and an adjuster plate slidably coupled to each other in order to be registered at any one of three different bubbling positions a first bubbling position allowing generation of small bubbles only, a second bubbling position allowing simultaneous generation of small and large bubbles and a third bubbling position allowing generation of large bubbles only;
said bubble plate including
an air chamber to be connected to a given supply source of compressed air, and
a bubble generating face provided with a number of aligned bubble holes communicating with said air chamber,
said bubble holes being arranged in parallel rows which run substantially normal to the sliding direction of the plates at equal center pitch;
said adjuster plate including
aligned small slots formed in the one half of its bubble generating face along said sliding direction of the plates, said small slots being larger in width than the largest contour of said bubble holes in said bubble plate, and arranged in parallel rows which run substantially normal to said sliding direction of the plates at equal center pitch,
aligned bubble holes arranged in parallel rows between and parallel to adjacent said rows of said small slots, said bubble holes being larger in contour than said bubble holes in said bubble plate, and communicating with associated recesses defined by walls for said small slots on the back side of said adjuster plate, and
aligned large slots formed in the other half of said bubble generating face along said sliding direction of the plate, said large slot being larger in width than said smaller slots and arranged in parallel rows which run substantially normal to said sliding direction of the plates at equal center pitch;
and
center pitches between adjacent rows of said small slots, adjacent rows of said bubble holes and adjacent rows of said large slots in said adjuster plate being all equal to said center pitch between said adjacent rows of said bubble holes in said bubble plate.

8 more elements

Dependencies are inferred from the claim text.

patentgrep

Loading patent…

Abstract

A bubble generator comprising

a bubble plate and an adjuster plate slidably coupled to each other in order to be registered at any one of three different bubbling positions a first bubbling position allowing generation of small bubbles only, a second bubbling position allowing simultaneous generation of small and large bubbles and a third bubbling position allowing generation of large bubbles only;
said bubble plate including
an air chamber to be connected to a given supply source of compressed air, and
a bubble generating face provided with a number of aligned bubble holes communicating with said air chamber,
said bubble holes being arranged in parallel rows which run substantially normal to the sliding direction of the plates at equal center pitch;
said adjuster plate including
aligned small slots formed in the one half of its bubble generating face along said sliding direction of the plates, said small slots being larger in width than the largest contour of said bubble holes in said bubble plate, and arranged in parallel rows which run substantially normal to said sliding direction of the plates at equal center pitch,
aligned bubble holes arranged in parallel rows between and parallel to adjacent said rows of said small slots, said bubble holes being larger in contour than said bubble holes in said bubble plate, and communicating with associated recesses defined by walls for said small slots on the back side of said adjuster plate, and
aligned large slots formed in the other half of said bubble generating face along said sliding direction of the plate, said large slot being larger in width than said smaller slots and arranged in parallel rows which run substantially normal to said sliding direction of the plates at equal center pitch;
and
center pitches between adjacent rows of said small slots, adjacent rows of said bubble holes and adjacent rows of said large slots in said adjuster plate being all equal to said center pitch between said adjacent rows of said bubble holes in said bubble plate.

8 more elements