发明名称 |
SPRAY GUN WITH IMPROVED NEEDLE SHUT-OFF VALVE SEALING ARRANGEMENT |
摘要 |
A gun-like spray device having a spray nozzle assembly at the discharge e nd and a reciprocatably movable valve needle for controlling the liquid flow through the discharge nozzle assembly. The nozzle assembly includes an orifice member which defines a liquid discharge orifice and a rigid valve seat for centering and precisely locating the valve needle in a closed position. An annular resilient sealing member is secured within the orifice member for engaging and creating a liquid seal about the valve needle separate and apart from the rigid seat when the valve needle is in a closed position. The spray nozzle assembly may be used with spray devices having different sized valve needles and includes a first rigid valve seat downstream of the resilient sealing member for receiving a relatively small diameter valve needle and a second rigid valve seat upstream of the resilient sealing member for receiving a relatively large diameter valve needle. |
申请公布号 |
CA2389940(A1) |
申请公布日期 |
2002.12.26 |
申请号 |
CA20022389940 |
申请日期 |
2002.06.10 |
申请人 |
SPRAYING SYSTEMS CO. |
发明人 |
HARUCH, JAMES;FERRAZZA, GERALD P. |
分类号 |
B05B15/00;B05B1/30;B05B1/32;B05B7/06;B05B7/08;B05B7/12;B05B15/02 |
主分类号 |
B05B15/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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