| 摘要 |
A plastic thermostat housing having a vent passage including a valve portion (46), a cap portion (48), and an outlet portion (54), with the cap portion (48) being larger in cross sectional area than the cap, portion (48). A check valve (52) is inserted into the valve portion (46) and a cap (50) with a vent hole (56) is inserted into the cap portion (48) for retaining the check valve (52) in the vent passage. The assembly is characterized by the plastic material of the housing (12) being deformed into engagement with the cap (50) for retaining the cap (50) in the valve portion (48) of the vent passage. The cap (50) may comprise a plastic material to be fused to the housing (12).
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