Method of making split-wedge gate valves
First Claim
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1. THE METHOD OF MANUFACTURING SPLIT-WEDGE GATE VALVE APPARATUS WHICH COMPRISES ROUGHLY FORMING A PLURALITY OF SPLIT-WEDGE METAL GATE VALVE ELEMENTS EACH WITH A BALLAND-SOCKET TYPE MATING CONNECTION SURFACE ON ONE SIDE THEREOF MERGED WITH A RELATIVELY BROAD-AREA REFERENCE SURFACE, BOTH OF WHICH SURFACES ARE SUBSTANTIALLY IRREGULAR IN THE ROUGH-FORMED CONDITION, SUBJECTING EACH OF SAID ELEMENTS TO PRESSURE OF COINING DIE MEMBERS SUFFICIENT TO
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1 Claim
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1. THE METHOD OF MANUFACTURING SPLIT-WEDGE GATE VALVE APPARATUS WHICH COMPRISES ROUGHLY FORMING A PLURALITY OF SPLIT-WEDGE METAL GATE VALVE ELEMENTS EACH WITH A BALLAND-SOCKET TYPE MATING CONNECTION SURFACE ON ONE SIDE THEREOF MERGED WITH A RELATIVELY BROAD-AREA REFERENCE SURFACE, BOTH OF WHICH SURFACES ARE SUBSTANTIALLY IRREGULAR IN THE ROUGH-FORMED CONDITION, SUBJECTING EACH OF SAID ELEMENTS TO PRESSURE OF COINING DIE MEMBERS SUFFICIENT TO
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Current AssigneeOwen W. Fryling
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Original AssigneeOwen W. Fryling
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InventorsFryling, Owen W.
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Application NumberUS04/392,883Time in Patent Office1,474 DaysField of SearchUS Class Current29/890.122CPC Class CodesF16K 3/14 with special arrangements f...F16K 3/314 Forms or constructions of s...Y10T 29/49409 Valve seat formingY10T 29/49417 including molding or casting
