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:
Sep. 20, 2005
Filed:
Jun. 30, 2003
William H. Freeman, St. Louis, MO (US);
William H. Freeman, St. Louis, MO (US);
Economy Controls Corporation, St. Louis, MO (US);
Abstract
A single-point connection apparatus for a closed fluid transfer delivery system having a mobile dispense to transfers liquid from a chemical delivery vessel to a chemical-receiving device, e.g., a dry cleaning machine, with return flow of vapor therefrom to the delivery vessel. A first passage selectively connects the delivery vessel to the liquid-receiving device. Liquid is only then pumped to the liquid-receiving device. A second passage connects the receiving device to the delivery vessel for a vapor return flow. A chamber of the apparatus has a filling valve to receive a filling adapter to deliver liquid. Associated with the filling valve is a relief valve mechanism providing continuous, uninterrupted liquid flow at an increased liquid flow rate through the first passage, inhibiting backflow of liquid through the second passage for continuous, uninterrupted vapor flow from the liquid-receiving device while liquid is being received by that device.