Method of making configured lead bushing for batteries
OwnerRobert W. Ratte, Darwin B. Longinventors
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Abstract
A method of making a configured lead bushing comprising the steps of die casting a one-piece cup-shaped member having cylindrical side walls and a disk extending across the cup-shaped member and then cutting away the disk from the cup-shaped member to leave an annular lead bushing having an interior surface and an exterior surface which is followed by cutting away portions of the exterior surface to form an outside shoulder and a set of acid rings and cutting away portions of the interior surface to form an interior shoulder on the annular lead bushing.
Claims14
A method of making a configured lead bushing comprising the steps of:
- forming a cup-shaped mold;
- forming a port for molten lead to flow into the cup-shaped mold;
- injecting molten lead under pressure into the mold through the port and allowing the lead to solidify to form a one-piece cup-shaped member having cylindrical side walls and a disk extending across the cup-shaped member;
- removing the cup-shaped member from the mold with the cup-shaped member having a cylindrical section and a disk section;
- cutting away the disk section from the cup-shaped member to leave the cylindrical section having an interior surface and an exterior surface;
- cutting away portions of the exterior surface to form a shoulder and a set of acid rings;
- and
- cutting away portions of the interior surface to form an interior shoulder.
A method of making a configured lead bushing substantially free of voids comprising the steps of:
- injecting molten lead under pressure into a mold and allowing the lead to solidify to form a one-piece cup-shaped member having cylindrical side walls and a disk extending across the cup-shaped member with the disk having sufficiently larger mass than the cylindrical walls so as to allow the cylindrical side walls to solidify before the disk with the cup shaped member having at least one finished surface for holding the part during subsequent processing of the cup-shaped member;
- removing the cup-shaped member from the mold with the cup-shaped member having a cylindrical section and a disk section;
- cutting away the disk section from the cup-shaped member to leave the cylindrical section having an interior surface and an exterior surface;
- cutting away portions of the exterior surface to form a shoulder and a set of acid rings;
- and
- cutting away a portion of the interior surface to form an interior shoulder to thereby form a configured lead bushing.
Dependencies are inferred from the claim text.