| Patents for F16B 31 - Screwed connections specially modified in view of tensile load; Break-bolts (2,772) |
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| 08/20/1991 | US5041004 Electrical connector with means for limiting the torque applied during threaded engagement |
| 08/14/1991 | CA2036218A1 Tool for the application of predetermined torque to bolts, nuts and the like |
| 08/08/1991 | WO1991011633A1 Composite threaded collar |
| 08/08/1991 | WO1991011632A1 Screw for securing resilient materials to a support vulnerable to damage caused by the thread |
| 08/08/1991 | DE4003048A1 Diaphragm force or pressure transducer |
| 08/07/1991 | EP0440011A2 Force and/or measuring device |
| 08/03/1991 | CA2035133A1 Force or pressure measuring device |
| 07/09/1991 | US5029461 Hydraulic fastener |
| 06/26/1991 | EP0433471A1 Trailer coupling having coupling mount with pressure disc |
| 06/11/1991 | CA1284734C2 Torque limited threaded locking fastener and a method for setting it to form an assembly |
| 06/04/1991 | US5020951 Fastener assembly |
| 06/04/1991 | US5020949 Controlled-torque fastener |
| 05/28/1991 | WO1991008398A1 Load-indicating fasteners |
| 05/28/1991 | CA2069319A1 Load-indicating fasteners |
| 05/22/1991 | EP0428154A1 Method and device to test for the correct fitting of screws |
| 05/15/1991 | EP0427664A2 Device for placing dowels |
| 05/14/1991 | US5015132 Direct tension indicator washer |
| 05/11/1991 | CA2029612A1 Device for setting anchors |
| 05/07/1991 | US5013199 Stripline launcher spring washer |
| 05/07/1991 | US5012704 Ball driver for a threaded collar |
| 05/02/1991 | EP0425358A1 Screwplug, especially for soft material, and tool for installing the same |
| 04/24/1991 | EP0423477A1 Controlling device for a fastener |
| 04/17/1991 | EP0422522A1 Capscrew head markings for torque-angle tightening |
| 04/17/1991 | EP0386038A4 Preloading clamp |
| 03/21/1991 | WO1991003609A1 Non-seating plate/fastener assembly |
| 03/12/1991 | US4998778 Mining tool including a chisel and a chisel holder |
| 02/27/1991 | EP0299976B1 Threaded fastener for workpieces of composite materials |
| 02/07/1991 | WO1991001484A1 Load indicating |
| 02/07/1991 | DE3925670A1 Shear pin coupling for two power transmitting components - consists of two nominal breakage points, attachment, holder and tongue and groove join |
| 02/05/1991 | US4990041 Fastening device |
| 01/29/1991 | US4988246 Apparatus for indicating incomplete and complete fastening of screw components |
| 01/23/1991 | EP0408807A1 Load indicating |
| 01/22/1991 | US4986712 Fastener assembly |
| 01/22/1991 | US4986708 Self-sealing separation fastener for small confines |
| 01/15/1991 | US4984938 Coated washer for an anchor bolt system |
| 01/15/1991 | US4984527 Device for the remote assembly of two members |
| 01/08/1991 | US4983084 Double locked threaded fastener |
| 01/01/1991 | US4981404 Tension bolt having adjustable stress level |
| 12/25/1990 | US4979857 Extended counterbore nut |
| 12/25/1990 | US4979281 Method of installing a flush head fastener |
| 12/18/1990 | USRE33490 Apparatus to mechanically stress a bolt-type fastener |
| 12/13/1990 | WO1990015259A1 Improvement to flush head fastener |
| 12/04/1990 | US4974989 Method for reducing installation forces and costs in a tapered bolt installation |
| 11/22/1990 | EP0397653A1 Force applicators. |
| 11/15/1990 | WO1990013753A1 Differential thread for transfer of screw thread forces |
| 11/07/1990 | EP0395929A1 Supporting bar for a carrying rail of a wall-or ceiling covering |
| 10/24/1990 | CN1010117B Torque-limited collar, joint, process for setting the joint and driver |
| 10/16/1990 | CA1275187C Element for filtering stress variations in a bolted assembly |
| 10/02/1990 | US4959938 Non-seating plate/fastener assembly |
| 09/27/1990 | DE4008879A1 Steuerbare achsenanordnung Controllable axle arrangement |
| 09/25/1990 | US4959064 Dynamic tension bone screw |
| 09/25/1990 | US4958970 Graduated-load spring washer system for screws and threaded fasteners |
| 09/21/1990 | CA2012547A1 Steerable axle assembly with preloaded kingpin drawkeys |
| 09/20/1990 | WO1990010798A1 Opti-mechanical displacement indicator with high sensitivity |
| 09/20/1990 | DE3933407A1 Metallic fasteners e.g. screws and rivets - made at least partially of memory alloy in areas which are deformed during fastening |
| 09/18/1990 | US4957401 Threaded fastener having minimized length and weight and method to make it |
| 09/13/1990 | DE3906787A1 Mechanical stressing device |
| 09/12/1990 | EP0386038A1 Preloading clamp |
| 09/11/1990 | US4956151 Device for holding together and releasing conical joints |
| 09/11/1990 | US4955645 Gauging device and method for coupling threaded, tubular articles and a coupling assembly |
| 08/21/1990 | US4949602 Wrench |
| 08/16/1990 | EP0381791A1 Ultrasonic load indicating member, apparatus and method |
| 08/14/1990 | US4948312 Fastening element with guide member |
| 08/14/1990 | US4947502 Method of making a dynamic tension bone screw |
| 08/07/1990 | US4945625 Method of installing a rivet into an aperture in a workpiece |
| 07/24/1990 | US4943095 Stepped thread and cutoff thread joint exhibiting excellent fatigue resistance |
| 07/17/1990 | US4941358 Process for proofing a threaded joint |
| 07/17/1990 | US4941337 Method of making threaded fasteners |
| 07/10/1990 | US4940610 Method for preventing loosening of a bolt |
| 06/28/1990 | DE3842351A1 Process and fastening for connecting vibrating objects |
| 06/27/1990 | EP0375593A1 Adjustable spacer |
| 06/26/1990 | CA1270670A1 Anchoring system for the tension member of an anchor, particularly a rock anchor |
| 06/13/1990 | EP0373049A1 Device for fixing to a part of the internal structure of a motor vehicle a piece of equipment to be placed relative to a part of the external structure of the car |
| 06/06/1990 | EP0371579A2 Nut and stud assembly |
| 06/05/1990 | US4930962 Nut and stud assembly |
| 06/05/1990 | US4930960 Mounting arrangement for electrical wiring devices having non-metallic mounting strap |
| 06/05/1990 | US4930951 Torque verification apparatus and method |
| 05/31/1990 | DE3840417A1 Screw-fastening element |
| 05/22/1990 | US4927305 Tightening device for threaded connectors |
| 05/17/1990 | DE3910887C1 Overload element |
| 05/15/1990 | US4925364 For maintaining a minimum normal displacement |
| 05/01/1990 | US4921380 Fastener assembly |
| 04/24/1990 | US4919459 Metal-to-metal backseat lockdown screw |
| 04/17/1990 | US4917555 Joining element for two machine parts of components, such as a fit-stretch fastener and fit-stretch bolt |
| 03/20/1990 | US4909685 Fastener, power tool for use with same and method tightening the fastener |
| 03/20/1990 | US4909479 Device for prestressing an assembly of screwed connecting members |
| 03/06/1990 | US4906154 Self-adjusting fastener assembly |
| 03/06/1990 | US4906037 Externally accessible, clutching adjustable keeper mechanism |
| 02/27/1990 | US4904132 For visually indicating small change between two points of a structure |
| 02/27/1990 | US4904122 Anchoring device, such as a rock anchor |
| 02/13/1990 | US4899591 Ultrasonic load indicating member, apparatus and method |
| 02/06/1990 | US4898370 Clamping apparatus |
| 01/17/1990 | EP0351111A1 Method of making threaded fasteners |
| 01/11/1990 | DE3823165A1 Fastening device |
| 12/26/1989 | US4889457 Load indicator |
| 12/19/1989 | US4887948 Deformable washer, particularly for predetermining the minimum force needed for tightening a nut or a screw |
| 12/07/1989 | DE3818313A1 Hydraulic clamping ring |
| 12/07/1989 | DE3818312A1 Hydraulically actuated clamping element, in particular a clamping ring, for clamping tools or workpieces in position |
| 12/05/1989 | US4884934 Junction bolt with adjustable clamping force |
| 12/05/1989 | US4884929 Flush head fastener |