Patents
Sitemap › F16 - Engineering elements or units; General measures for producing and maintaining effective functioning of machines or installations; Thermal insulation in general › F16B - Devices for fastening or securing constructional elements or machine parts together, e.g. nails, bolts, circlips, clamps, clips or wedges; Joints or jointing › F16B 23 - Specially-shaped heads of bolts or screws for rotations by a tool
Patents for F16B 23 - Specially-shaped heads of bolts or screws for rotations by a tool (3,038)
04/2000
04/04/2000US6045311 Bolt, nut, and wrench in taper design for turning the bolt and the nut
03/2000
03/28/2000CA2182625C Screw
03/23/2000WO2000015966A1 Improved structure of a multi-angle nut and its driving or unscrewing tool
03/15/2000EP0985499A2 Device for the loosening of jammed screw or nuts and a corresponding nut
03/14/2000US6036419 Fastener structure
03/09/2000DE19840916A1 Vorrichtung zum Lösen von festsitzenden Schrauben und Muttern und eine dieser Vorrichtung angepaßte Mutter Apparatus for loosening tight screws and bolts and a nut adapted this device
03/08/2000EP0984175A1 New system for holding and tightening screws
03/07/2000US6033153 Rock bolt and method of installing a rock bolt
03/07/2000CA2140475C Screw
02/2000
02/16/2000EP0979358A1 Screw
02/16/2000CN1049477C Screw and wrench for snugly-fitted tightenings
02/15/2000US6024522 Security fastener and drive tool for driving both security fasteners and conventional fasteners
02/02/2000EP0975878A1 Screw
01/2000
01/25/2000US6017177 Multi-tier security fastener
01/25/2000US6016727 Recess drive bone screw and cooperable driving tool
01/05/2000CN1048080C Elliptical lobed drive system
12/1999
12/30/1999DE19928431A1 Screw component used as safety fixing device
12/09/1999WO1999062727A2 Fastener structure
12/09/1999DE19823229A1 Furniture shelf assembly system has X-shaped extruded profile presented
12/01/1999EP0961042A1 Head for devices rotating upon operation of associated operating tools with internal seat for engagement with the tools themselves
12/01/1999EP0959794A1 Screw for insertion into a bone and tool for removing this screw
11/1999
11/24/1999EP0809760B1 Releasable coupling and tool therefor
11/11/1999WO1999057446A1 Method and device for producing and checking screwed connections
11/11/1999DE19819300A1 Verfahren und Vorrichtung zum Herstellen und Prüfen von Schraubverbindungen Method and apparatus for producing and testing threaded joints
11/11/1999DE19818888A1 Quick-fit fixing system for plate-shaped objects on walls
11/03/1999CN1234099A Screw, driver bit and header punch for mfg. screw
10/1999
10/26/1999US5971860 Device for detecting faulty recesses
10/21/1999WO1999052680A1 High torque wrenching system
10/20/1999CN1045813C Screw capable of adapting for multiple screw driving head
10/05/1999CA2108743C Recessed screw
09/1999
09/28/1999US5957645 Spiral drive system for threaded fasteners
09/23/1999WO1999047821A1 New system for holding and tightening screws
09/23/1999WO1999047820A1 Assembly of screw and screwdriver which are mutually self-gripping
09/15/1999EP0941809A2 Screwdriver tip and screw suitable therefore
09/14/1999US5950506 Locking device for bicycles
09/14/1999CA2172775C One-direction captive screw fastener
09/02/1999WO1999043472A1 Screwdriver bit and its combination with screw
08/1999
08/31/1999US5944295 Combination wall anchor fastener and fixture
08/10/1999US5934853 Nut and device for tightening provided with the same
08/04/1999EP0933538A1 Screw, driver bit and header punch for manufacture of screw
07/1999
07/29/1999WO1999027261A3 High-torque resorbable screws
07/27/1999US5927240 Housing shared by vehicle component and disabling switch and decoder
07/06/1999US5919020 Screw
07/01/1999WO1999017908A8 A tool and countersinking screw
06/1999
06/30/1999EP0926362A1 Fastener having multiple-drive head and method of manufacture thereof
06/30/1999CN1221079A Nut, and device for tightening provided with the same
06/22/1999US5913650 Fastening device with security feature
06/17/1999WO1999030046A1 Combination of screw with driver bit or wrench
06/03/1999WO1999027261A2 High-torque resorbable screws
06/03/1999CA2311816A1 High-torque resorbable screws
06/02/1999EP0918942A1 Force application element for the transmission of a torque
05/1999
05/25/1999US5906147 Wrench-to-bolt coupling assembly
05/18/1999US5904081 Fastener and tool combination for applying equivalent torque along fastener length
05/14/1999WO1999023389A1 Spiral drive system for threaded fasteners
05/06/1999EP0913593A1 Nut and nut tightening and loosening arrangement
04/1999
04/22/1999WO1999019636A1 Anti-theft locking device
04/15/1999WO1999018361A1 Recessed head fastener and driver systems
04/15/1999WO1999017908A1 A tool and countersinking screw
04/08/1999DE19836572A1 Multistage security fixture device
04/07/1999CN1042793C Screw for securing intramedullary nail
03/1999
03/31/1999CN1212218A Screw with gear
03/18/1999DE19837513A1 Binding pin
03/10/1999CN1210456A Screw for insertion into a bone and tool for removing this screw
02/1999
02/26/1999CA2213917A1 Threaded tubular fastener and fastener system
02/16/1999US5870934 Anti-theft "O" tool and screw set for license plates
02/09/1999US5868049 Screw and driver system
02/02/1999US5865582 One-direction captive screw fastener
01/1999
01/12/1999US5857816 Torque-limiting fastening device
01/12/1999CA2094478C Back-side taper wedging drive system
12/1998
12/23/1998EP0886074A1 Fastening clip
11/1998
11/25/1998EP0879117A1 Method and apparatus for a theft resistant fastener
11/12/1998WO1998050706A1 Screw
11/11/1998EP0804690B1 A screw
11/05/1998CA2204439A1 Non-slip screwdriver/screw
10/1998
10/27/1998US5827031 Self starting finishing screw and driver tool
10/22/1998WO1998046397A1 Screwdriver blade construction for a surgical screw
10/22/1998WO1998027344A3 Lug nut apparatus with square drive
10/22/1998DE19718712C1 Schraube zum Verbinden von dünnen Werkstücken Screw for joining thin workpieces
10/15/1998WO1998045131A1 Anti-theft lock-nut and key
10/08/1998DE19712784A1 Schraube Screw
10/01/1998WO1998042989A1 Screw
09/1998
09/22/1998US5810531 Skateboard fastening device
09/16/1998EP0864757A2 Screw connection
09/08/1998US5803690 Locking system for vehicle wheels
09/03/1998WO1998038010A1 Recessed drive fastener and cooperable driving tool
08/1998
08/25/1998US5797659 Lug nut apparatus with square drive
08/18/1998US5795116 Arrangement in a rotatable device to protect against over-tightening
08/11/1998US5791848 Structure for converting standard drive fastener to security fastener
08/05/1998EP0856451A1 Tilt holding force adjusting mechanism for steering column
07/1998
07/29/1998CN1188860A Screw capable of using multiple screw rotating head
07/14/1998US5779207 For removably affixing a device to a gripped element
06/1998
06/25/1998WO1998027344A2 Lug nut apparatus with square drive
06/17/1998EP0848172A1 Mounting device and a tool for turning said device
06/16/1998US5765980 Loosening preventive screw
06/09/1998US5762457 Threaded fastener with longitudinal grooves
05/1998
05/27/1998EP0713442B1 Process and tool for rotating connecting elements, and connecting element used therewith
05/19/1998CA2101866C Security nuts
05/13/1998EP0841129A1 Threaded connection.
04/1998
04/30/1998WO1998017923A1 Screw, driver bit and header punch for manufacture of screw
04/28/1998US5743690 Self-locking tubular fastener and fastener system
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