Electric heating – Heating devices – With heater-unit housing – casing – or support means
Patent
1998-02-20
2000-03-28
Walberg, Teresa
Electric heating
Heating devices
With heater-unit housing, casing, or support means
138 33, A05B 358, E03B 710
Patent
active
06043466&
ABSTRACT:
A system for clamping an object, such as a heater, to a cylindrical member, such as a nozzle or a hot runner channel is described. The system has at least one deformable elastic member for applying a clamping force to the object so as to hold the object against an outer surface of the cylindrical member and an annular sleeve for compressing the at least one deformable elastic member and for directing the clamping force radially inwardly toward the cylindrical member. The deformable elastic member, in one embodiment, is formed by a spring member which surrounds the object and the cylindrical member. In an alternative embodiment, the deformable elastic member comprises a plurality of hollow tubes surrounding the object and the cylindrical member, which tubes are hollow, thin walled, and elastic. The annular sleeve is preferably formed from a material having a thermal expansion coefficient less than the thermal expansion coefficient of the material forming the cylindrical member. Thus, as heat is applied, the cylindrical member expands more than the outer sleeve causing compression of the deformable elastic member(s) and direction of the clamping force towards the object to be held against the cylindrical member. A method for using the clamping system of the present invention is also described.
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Godwin Harold
Jenko Edward Joseph
Husky Injection Molding Systems Ltd.
Robinson Daniel
Walberg Teresa
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