Patent ID: 6915922
Filing Date: 2005-07-12
Classification: B67D,F16L

Abstract:
1. A pressure tank comprising: an upper chamber having a hole on top thereof; an inner chamber enclosed by said upper chamber said inner chamber having an inward protrusion on top thereof, said inward protrusion having a through hole aligned with said hole of said upper chamber and a recession around said through hole thereof and open communication therewith; a sealing washer installed between and in contact with said upper chamber and said inner chamber, said sealing washer having a through hole aligned with said through hole of said inner chamber and said hole of said upper chamber; a stainless steel fluid connector engaged through said hole of said upper chamber, said through hole of said sealing washer, and said through hole of said inner chamber in order; a leakproof ring placed around a joint of said inward protrusion and said stainless steel fluid connector, said leakproof ring being received in said recession of said inward protrusion; a stainless steel ring washer surrounding said stainless steel fluid connector and overlaying said leakproof ring; an elastic diaphragm mounted on an inner side of said inner chamber and defining said upper chamber and a lower chamber, said lower chamber having an inlet for inputting air thereto; wherein a bottom of said stainless steel fluid connector being riveted to press against said stainless steel ring washer to hold said leakproof ring firmly and secure said inner chamber and said sealing washer to said upper chamber.