| Patents for B21H 3 - Making helical bodies or bodies having parts of helical shape (2,057) |
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| 12/23/1980 | CA1091873A1 Process for making shanks of connecting members, such as hinges for window and door frames, comprising lengths of different section with continuous uniform screw thread, and a hinge provided by such a process |
| 12/09/1980 | US4237948 Screw threaded members and their manufacture |
| 11/25/1980 | US4235149 Self-thread creating fastener and method and apparatus for making the same |
| 11/18/1980 | US4233878 Barb and method of making same |
| 10/28/1980 | US4229966 Adjustable holder for the stationary die of a thread rolling machine |
| 10/01/1980 | EP0016206A1 Self-thread creating fastener and method and apparatus for making the same |
| 09/18/1980 | WO1980001886A1 Machine for drawing the thread of bolts |
| 09/09/1980 | CA1085109A1 Method of making lobular internally and externally threaded insert |
| 06/25/1980 | EP0012382A1 Rolling mill for manufacturing finned tubes |
| 04/01/1980 | US4195508 Adjustably timed thread roll machine |
| 04/01/1980 | US4195507 Thread roll timing |
| 03/25/1980 | US4194430 Thread-forming screw with step taper |
| 03/20/1980 | WO1980000425A1 Self-thread creating fastener and method and apparatus for making the same |
| 12/25/1979 | US4179976 Extruding and tapping screw and blank for manufacture of such screw |
| 11/13/1979 | CA1066036A1 Method of and apparatus for manufacturing finned tubing |
| 10/17/1979 | EP0004541A1 Screw, especially thread forming screw and screw forming thread roll for this screw |
| 10/09/1979 | US4170050 Method of making lobular internally and externally threaded insert |
| 09/18/1979 | US4168458 Method and apparatus for detecting, signalling, and sorting inaccurately formed articles produced by a tool machine |
| 05/15/1979 | US4153982 Method and apparatus for forming cross ribbed pipes |
| 05/15/1979 | CA1054412A1 Thread-forming fastener having dual lobulation and dies for making the same |
| 05/15/1979 | CA1054315A2 Die for making thread-forming fastener |
| 04/17/1979 | US4149287 Method and apparatus for pinch pointing screw blanks |
| 03/06/1979 | US4142392 Internally groove forming apparatus for heat exchanging pipes |
| 01/30/1979 | US4136416 Method of producing a vibration resistant fastener |
| 10/10/1978 | US4118965 Die mounting assembly for a planetary work forming machine |
| 10/10/1978 | CA1040084A1 Vibration resistant fastener |
| 09/26/1978 | CA1039166A1 Locknut and method of making the same |
| 09/12/1978 | CA1038145A1 Method for providing improved nucleate boiling surfaces |
| 08/22/1978 | CA1036851A1 Composite drill screw |
| 08/01/1978 | US4104446 Self-tapping or thread-forming screw |
| 07/18/1978 | US4100784 Finned tubing |
| 06/27/1978 | US4096723 Tool assembly for forming internal grooves in tubes |
| 06/27/1978 | US4096722 Roll-type thread cutting die |
| 05/09/1978 | US4088045 Planetary work forming machine having improved starter timing control and starter drive selector |
| 05/09/1978 | US4087875 Apparatus for forming and threading stock |
| 11/22/1977 | US4059031 Method and apparatus for the production of machine tools |
| 09/27/1977 | US4050276 Thread-rolling head |
| 09/06/1977 | US4046051 Thread forming screw |
| 08/16/1977 | US4042342 Blanks for making self-thread forming threaded fasteners |
| 08/09/1977 | US4040328 Thread-forming fastener having dual lobulation and dies for making the same |
| 07/26/1977 | US4037281 Fastener manufacturing method |
| 07/12/1977 | US4034586 Thread rolling die and method of thread rolling |
| 09/21/1976 | US3981170 Apparatus for assembling a screw and compressible washer |
| 09/07/1976 | US3978760 Self-thread forming threaded fasteners and blanks for making same |
| 08/03/1976 | US3972359 Vibration resistant fastener |
| 08/03/1976 | US3972213 Thread-rolling head |
| 08/03/1976 | US3972084 Fastener manufacturing method |
| 07/20/1976 | USRE28907 Self-tapping threaded bushings |
| 07/13/1976 | US3968533 Fastener manufacturing apparatus |
| 07/06/1976 | US3967486 Toughening roll die work method for metallic material |
| 04/27/1976 | US3952785 Locknut |
| 03/23/1976 | US3945272 Thread-rolling method, thread-rolling dies, and method of manufacturing the dies |
| 03/09/1976 | US3942406 Slab-sided self-tapping screw |
| 03/09/1976 | US3942349 Crown die for thread rolling of applicator rolls |
| 02/17/1976 | US3938374 Tool for forming internal threads |
| 01/27/1976 | US3934444 Method and apparatus for forming vibration-resistant thread-forming screw |
| 01/06/1976 | US3930425 Method for manufacturing contoured thread rolling dies |