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US 4,788,885 AGranted
Housing consisting of at least two parts
AssigneeRobert Bosch GmbH
InventorRomuald Fries
Life of this patent
Estimating the term…
Abstract
A housing having an inner part radially inside of an outer part so as to form a hollow space therebetween. The outer part has two opposite end portions which radially extend inward toward the inner part so as to further define the hollow space. The end portions and the inner part form interengaging projections and grooves. The inner and outer parts are composed of different materials with different heat expansion coefficients. The interengaging projections and grooves are thermally expanded against each other to effect a moisture-tight sealing of the hollow space.
Claims7
A housing, comprising:
- an inner and an outer part, said inner part being arranged radially inside of said outer part so as to form an enclosed space radially therebetween, said parts having different heat expansion coefficients and a plurality of interengaging projections and grooves, said interengaging projections and grooves being formed to thermally expand at different rates against each other because of said different heat expansion coefficients so as to effect a moisture-tight seal of said space wherein said parts have two end portions extending radially from at least one of said parts toward the other of said parts, said end portions being formed with at least one of said projections and grooves thereon facing the other of said parts.
Dependencies are inferred from the claim text.