Patent ID: 7510396

Claim:
A disposable dental prophylaxis apparatus capable of discharging a predetermined amount of dentifrice material therefrom, comprising: a housing having a hollow portion terminating in a head portion with a wheel room formed at said head portion in said housing and wherein a drain hole is formed to serve as a passageway between said wheel room and a tube room formed in said housing having wall surfaces and wherein said tube room is in front of a link room formed in said housing having inside wall surfaces with a plurality of teeth formed along said inside wall surfaces of said link room for arbitrarily adjusting the discharge of said dentifrice material in predetermined amounts and wherein an entrance is formed opened at a back side portion of said link room; a tube mounted in said tube room and having a back plate; a link having a link shaft and a push panel formed at a front end portion of said link shaft; and said link mounted in said link room in such a manner as for said push panel to be in close contact with said back plate of said tube to apply compressive force to said tube; a partition formed between said link room and said tube room, and having a partition groove adapted for guiding said link; a lid having a link guide formed so as to open a given distance in one direction thereof; an insertion groove formed along a top portion of said wall surfaces of said tube room and said inside wall surfaces of said link room in such a manner as to be coupled with said lid therealong after said tube and said link are mounted in said tube room and said link room, respectively; a joint gear with an outer peripheral surface and a wheel gear with a bottom face both rotatably mounted in said hollow portion of said housing; and a wheel cup having a lower portion, a middle portion, a wheel cup drain hole formed in said wheel cup to pass through said middle portion for receiving said dentifrice material therethrough, a top periphery with a ring-shaped close contact face formed along said top periphery, an inner periphery of said ring-shaped close contact face, an elastic close contact groove formed along said inner periphery of said ring-shaped close contact face, and wherein said ring-shaped close contact face and said elastic close contact groove are adapted for close contact with said head portion of said housing and with said bottom face of said wheel gear.