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2. 发明授权

US3591078A Thermostatic device 失效
标题翻译：恒温装置
公开(公告)号：US3591078A
公开(公告)日：1971-07-06
申请号：US3591078D
申请日：1965-06-17
申请人： MAURICE FEINBERG
发明人： FEINBERG MAURICE
IPC分类号： G05D23/02 , G01K5/00
CPC分类号： G05D23/025
摘要： A thermosensitive control device comprising a rigid thermally conductive casing closed at one end and open at the other end, said casing including a substantially cylindrical enclosed housing having first and second opposed end walls and a sidewall, said first and second end walls being of greater thickness than said sidewall and said first end wall having a single central opening provided therein and an elongated tubular casing section having a cross-sectional area which is less than the crosssectional area of said housing, said casing section having open inner and outer ends, the inner end thereof being inserted into said housing through said single central opening in the first end wall thereof, said first end wall having an inner surface which angles outwardly away from the inner end of said casing section toward said sidewall and second end wall a single thermal drive element formed by a thermally sensitive, inelastic plastic rod expandable as substantially a solid at elevated temperatures below 300* F. received within said housing and casing section and abutting said second end wall, the portion of said rod within said housing being of greater diameter than the portion of said rod within said casing section whereby the outer surfaces of said rod are in contact with the inner surfaces of said housing sidewall and casing section, a drive piston received within the open outer end of said casing section, said drive piston being movable outwardly of said casing in response to the expansion of said plastic rod at elevated temperatures, and biasing means mounted upon said piston, said biasing means being operative to bias said piston toward said plastic rod to maintain said sealing means in tight sealing engagement with the inner surface of said casing section.

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