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:
Jan. 02, 2007
Filed:
May. 04, 2004
Travis Schenk, Spearfish, SD (US);
James Isaac Meyer, Spearfish, SD (US);
Jeffrey Jochim, Belle Fourche, SD (US);
Gary M. Hamilton, Rapid City, SD (US);
Travis Schenk, Spearfish, SD (US);
James Isaac Meyer, Spearfish, SD (US);
Jeffrey Jochim, Belle Fourche, SD (US);
Gary M. Hamilton, Rapid City, SD (US);
Ramvac Dental Products, Inc., Spearfish, SD (US);
Abstract
A separating tank assembly enables a dental vacuum separating tank to be drained without using a pump and without turning off or isolating the vacuum source from the tank. A drain tank is provided in fluid communication with the separating tank, and a control valve controls a pressure differential between the drain tank and the fluid tank. When the separating tank is filling, the drain tank and separating tank pressures are equalized, and the tanks are in fluid communication. When the fluid in the drain tank reaches a predetermined level, the solenoid opens the drain tank to atmosphere, blocking fluid communication between the separating tank and the drain tank and opening fluid communication between the drain tank and a sewer drain. After the fluid is drained, the solenoid reopens fluid communication between the separating tank and the drain tank, and the pressures in the respective tanks are equalized.