Koninklijke Philips Corporation N.v.

Jeffrey Garrigues

Kevin Arnold Miller

Wolter F Benning

Brian Johanski

An oral care device () with a pump assembly () including: a plunger assembly () having a rack assembly (); a compressible spring () configured to exert a forward force on the plunger assembly; and a rack and pinion assembly () configured to exert a force on the plunger assembly opposite the forward force, wherein the rack assembly includes a plurality of rack teeth () and the pinion assembly () includes a plurality of teeth () arranged around a portion of the pinion; where the plurality of rack teeth include an angled front surface () and an angled rear surface (), the front surface of at least some of the plurality of rack teeth including a different angle than the rear surface, and further where at least some of the plurality of rack teeth include a pointed or rounded tip ().

Growing community of inventors

Lake Stevens, WA, United States of America

Jeffrey Garrigues