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Class Information
Number: 470/14
Name: Threaded, headed fastener, or washer making: process and apparatus > Process > Making externally threaded fastener, e.g., screw or bolt > Bolt > Having specific configuration > Hollow bolt type
Description: Subject matter wherein the fastener is provided with a longitudinally extending bore or cavity.

Sub-classes under this class:

Class Number Class Name Patents
470/15 And prong 1

Patents under this class:

Patent Number Title Of Patent Date Issued
7896599 Hybrid composite-metal male fastener Mar. 1, 2011
7645106 Cone-head thrust screw Jan. 12, 2010
7357726 Method of producing a fibre reinforced structural element Apr. 15, 2008
7189251 Open helical organic tissue anchor having recessible head and method of making the organic tissue anchor Mar. 13, 2007
6247884 Self-locking threaded plug Jun. 19, 2001
6024646 Swaged pin end of pipe connection Feb. 15, 2000
4928375 Method of forming a hollow fastener from sheet metal May. 29, 1990
4882925 Method of making terminal nut for ignition plug by plastic working Nov. 28, 1989
4805437 Method and apparatus for producing fasteners having wrenching sockets therein Feb. 21, 1989
4680823 Method of making a self-locking blind fastener Jul. 21, 1987
4653132 Method of making plug-containing type internally threaded anchor Mar. 31, 1987
4604786 Method of making a composite article including a body having a decorative metal plate attached thereto Aug. 12, 1986
4601192 Method of producing an expansion sleeve for a metallic expansion dowel assembly Jul. 22, 1986
4520521 Process of manufacturing a sleeve and wedge for an anchor bolt Jun. 4, 1985
4442562 Method of forming anchor bolts Apr. 17, 1984
4348141 Hollow externally threaded fasteners having greatly increased ductility Sep. 7, 1982

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