Water Pik, Inc.

Oscar C Senff

Jeffrey William Ladwig

Adam Weisgerber

Carson Noel Massie

Heman Au

Harold A Luettgen

Robert D Wagner

Brian J Woodard

Blaine Hanson

Jonathan Huber

Brian Woodard

Ryan Chase Kelley

An oral irrigator includes a drive assembly, a pump assembly, and a flexible membrane seal. The drive assembly is received within a housing. The pump assembly is positioned at least partially within a pump chamber. The pump assembly includes a piston and a connecting rod coupled to the drive assembly, the connecting rod movable between first and second positions through operation of the drive assembly. The flexible membrane seal extends from an interior surface of the pump chamber to the connecting rod to fluidly seal an open end of the pump chamber. The flexible membrane seal deforms from a first orientation to a second orientation as the connecting rod moves from the first position to the second position.

Oral irrigator

An oral irrigator has a base unit housing a motor and a pump, a removable reservoir defining a reservoir cavity configured to mechanically couple to a top surface of the base unit and fluidly couple the reservoir cavity to the pump, and a belt drive assembly connecting the motor to the pump. The belt drive assembly includes a drive pulley connected to an output shaft of the motor, a driven pulley spaced apart from the drive pulley and mechanically connected to a piston that drives the pump, and a continuous belt connecting the drive pulley to the driven pulley. A handle for the oral irrigator may include a housing defining a slot formed in an outer wall of the housing.

Reduced form factor oral irrigator

A water flosser is provided that may include a base, a reservoir positioned above the base, a lid, and a handle in fluid communication with the reservoir such as by a hose. The reservoir of the water flosser may include a recess formed in a reservoir wall for receipt of a hose support structure. An input device (e.g., a power button) may be positioned adjacent an upper portion of the water flosser, such as in or adjacent the lid. Actuation of the input device may include application of a force downward toward the base. The water flosser may include a motor having a dual output shaft, with one end of the shaft being associated with a rotary encoder or other sensing device to determine an operational characteristic of the motor. The motor may be driven by a power source such as a rechargeable battery.

Countertop water flosser

In one embodiment, an oral irrigator including a reservoir, a tip fluidly connected to the reservoir, a motor having a drive shaft, and a pump. The pump includes a pump body including a pump inlet fluidly connected to the reservoir and a pump outlet fluidly connected to the tip, a spiral pinion gear including a plurality of pinion gear teeth that curve along their length, and a spiral driven gear including a plurality of driven gear teeth that mesh with the pinion gear teeth. The pump also may include a connecting rod eccentrically connected to the driven gear and a piston and received within the pump body. Movement of the drive shaft causes the pinion gear to rotate, causing the driven gear to rotate, translating the connecting rod and moving the piston laterally within the pump body to pull fluid from the reservoir and push the fluid to the tip.

Base for water flosser

Reservoir for water flosser

In one embodiment, an oral irrigator includes a reservoir, a base configured to support the reservoir, and a button assembly coupled to the base. The button assembly may include a button, a spring coupled to the button, and a seal coupled to the spring. The button may be movable between an original position and an actuation position. The spring may be configured to deform in response to a user input force moving the button from the original position to the actuation position, and to resiliently return the button to the original position in response to cessation of the user input force on the button. The seal may inhibit fluid from entering through the spring into the base.

Button assembly for electronic device, such as oral irrigator

Oral irrigator base

Water flosser

Oral irrigator reservoir

An oral irrigator has a removable reservoir defining a reservoir cavity, a base unit housing a motor and a pump, and a handle for directing fluid flow from the pump removably connected to the base unit and fluidly coupled to the pump by a hose. The handle has a housing defining a slot formed in an outer wall of the housing. The slot is bounded by two opposing walls spaced apart from each other and a transverse wall at a terminal interior end of the opposing walls. The outer wall of the housing is open to the slot at lateral sides of the two opposing walls and at a base end of the opposing walls opposite the transverse wall.

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Broomfield, CO, United States of America

Oscar C Senff