Abstract: A tool for removing damaged fasteners and a method for making such tool wherein the tool (10) includes a first end (12) and a second end (14) with an outside surface (32) and an inside surface (40) defined between ends (12) and (14). A portion (46) of inside surface (40) is in the shape of an hexagonal frustum (54) that has a major end (58) and that includes spiral splines (25). Splines (25) have constant depth between the major end (58) and the minor end (56) of frustum (54) and the relief angle (£) of splines (25) decreases in the direction from minor end (56) toward major end (58). In the method for making the tool (10), a tubular section (118) is made from a tapered blank (91) by piercing one end of the tapered blank with a pierce punch (132). One end of the tubular section is then driven onto a splined punch (162) to provide splines in one end of the tubular section.

Abstract: A tool for removing damaged fasteners and a method for making such tool wherein the tool (10) includes a first end (12) and a second end (14) with an outside surface (32) and an inside surface (40) defined between ends (12) and (14). A portion (46) of inside surface (40) is in the shape of a hexagonal frustum (54) that has a major end (58) and that includes spiral splines (25). Splines (25) have constant depth between the major end (58) and the minor end (56) of frustum (54) and the relief angle (£) of splines (25) increases in the direction from minor end (56) toward major end (58). In the method for making the tool (10), a tubular section (118) is made from a tapered blank (91) by piercing one end of the tapered blank with a pierce punch (132). One end of the tubular section is then driven onto a splined punch (162) to provide a splined tubular section (165) having splines in one end.

Abstract: A tool for removing damaged fasteners and a method for making such tool wherein the tool (10) includes a first end (12) and a second end (14) with an outside surface (32) and an inside surface (40) defined between ends (12) and (14). A portion (46) of inside surface (40) is in the shape of an hexagonal frustum (54) that has a major end (58) and that includes spiral splines (25). Splines (25) have constant depth between the major end (58) and the minor end (56) of frustum (54) and the relief angle (£) of splines (25) decreases in the direction from minor end (56) toward major end (58). In the method for making the tool (10), a tubular section (118) is made from a tapered blank (91) by piercing one end of the tapered blank with a pierce punch (132). One end of the tubular section is then driven onto a splined punch (162) to provide splines in one end of the tubular section.

Abstract: A tool for removing damaged fasteners and a method for making such tool wherein the tool (10) includes a first end (12) and a second end (14) with an outside surface (32) and an inside surface (40) defined between ends (12) and (14). A portion (46) of inside surface (40) is in the shape of an hexagonal frustum (54) that has a major end (58) and that includes spiral splines (25). Splines (25) have constant depth between the major end (58) and the minor end (56) of frustum (54) and the relief angle (£) of splines (25) decreases in the direction from minor end (56) toward major end (58). In the method for making the tool (10), a tubular section (118) is made from a tapered blank (91) by piercing one end of the tapered blank with a pierce punch (132). One end of the tubular section is then driven onto a splined punch (162) to provide splines in one end of the tubular section.

Abstract: A mounting for a heating element on a hot water tank wherein an externally threaded spud is welded to the tank around an opening and the heating element is pushed through the opening, the heating element having a mounting plug thereon with a gasket to engage the spud and a nut having a wave spreading flange engages the mounting plug threadably engages the spud holding a sealing element on the mounting plate against the spud to prevent leakage.

Abstract: A valve made up of a body and a sleeve telescopically received in the body. A hand wheel is concentrically received on the sleeve and threadably received on the body for moving the sleeve axially of the body. A seal is provided in the body between the body and the sleeve. The seal closes the flow passage between the body and the sleeve when the sleeve is moved to one extreme position and opens the flow passage when the sleeve is moved to another extreme position. The sleeve is noncircular so that it will not rotate relative to the body. The valve is suitable for use on hot water tanks and the like for closing off the flow of water. The body has axially extending hooks that engage the body when the seal is moved to the open position so that the relative movement of the sleeve and body are limited and the sleeve and body will not separate.