Patent ID: 7070353
Filing Date: 2006-07-04
Classification: A46B,B05B

Abstract:
1. A toothbrush comprising: an elongated structure formed at a lower end with a hollow handle having an interior cavity; a sliding piston in said interior cavity subdividing said interior cavity into an intermediate chamber above said piston and containing a supply of a toothpaste, and a lower chamber communicating with an exterior through a minute orifice; a variable-volume upper chamber formed at an upper end of said hollow handle; a spring-loaded first valve blocking flow of toothpaste from said upper chamber back into said intermediate chamber, but permitting flow of toothpaste from said intermediate chamber into said upper chamber upon a reduction in pressure in said upper chamber; a trigger at the upper end of said hollow handle, manually displaceable generally axially thereon, and decreasing a volume of said upper chamber to displace toothpaste therefrom, said trigger having an elastic repositioning device in the form of a spring urging said trigger into a position corresponding to a maximum volume of said upper chamber; a tubular extension axially retractible in said housing and axially extensible therefrom, said extension having: seals around said extension and at a location of communication between said upper chamber and said passage.