Seal for spray gun

Fluid sprinkling – spraying – and diffusing – Flow line or nozzle attached or carried handgrip or handle – Pistol grip type

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Details

277118, B65D 5302

Patent

active

053640330

ABSTRACT:
A seal assembly for providing multiple fluid tight seals about a valve needle or other axially moveable shaft, such as a valve needle in a spray gun. The seal assembly is disposed in a chamber through which the shaft passes. Two conical sealing surfaces are formed co-axially about the shaft at either end of the chamber. Two packing members are urged apart by a spring, each packing member being urged into a respective conical recess formed by one of the sealing surfaces and the shaft. Each packing member seals against one of the sealing surfaces and against the outer periphery of the shaft. A packing member may be formed to provide multiple stage sealing by providing a collar which causes a second end on the packing member to seal with the shaft.

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