The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 09, 2003
Filed:
Apr. 24, 2001
Ricoh Elemex Corporation, Aichi, JP;
Abstract
A waste liquid tank B is connected to a cleaning head through a waste tube . Squeezing means is provided in a waste flow passage of from an end of the cleaning head to a suction port b of the waste liquid tank B to squeeze the waste flow passage. A pump A is driven with a cleaning head introduced in the oral cavity to suck the residual matter in the oral cavity and to drain it into the waste liquid tank B in order to clean the oral cavity. When the residual matter cannot be sucked with a normal suction force, the waste flow passage is squeezed by the squeezing means to increase the negative pressure in the waste tube . Thereafter, the squeeze is released to suck the residual matter at a breath with the increased negative pressure.