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)
04/1986
04/09/1986EP0176969A1 Screw and driving tool therefor
04/09/1986EP0176593A1 Fastener, particularly suited for orthopedic use
02/1986
02/25/1986US4572039 Interlocking lock screw with screw driver
02/25/1986US4571966 Security mechanism for pipe flanges
02/19/1986EP0172130A2 Screw for orthopaedic fixation
02/11/1986US4569259 Automobile wheel cover locking bolt and wrench combination
01/1986
01/21/1986US4565111 Device for rotating and axially moving a bolt
01/08/1986EP0166725A1 An improved windshield wiper material.
12/1985
12/11/1985EP0164318A2 Screw or bolt with head for multi-tool use
10/1985
10/24/1985WO1985004568A1 Fastener, particularly suited for orthopedic use
10/15/1985CA1195160A1 Internal-external drive recess
10/10/1985CN85102613A General screw and screw driver
09/1985
09/10/1985US4539874 Tool driver and fastener apparatus
09/03/1985US4538486 Non-slip screw
08/1985
08/28/1985EP0153275A1 Tie bolt
07/1985
07/16/1985US4528874 Screw fasteners and drivers
07/04/1985WO1985002856A1 An improved windshield wiper material
07/02/1985US4526071 Screwdriver and joining device
05/1985
05/22/1985EP0142037A1 Universal screw
02/1985
02/05/1985US4497225 High torque fastener and driving tool
01/1985
01/23/1985EP0131851A1 Apparatus for driving or removing screws
01/02/1985EP0129717A1 Device for turning and axially moving bolts
11/1984
11/22/1984WO1984004481A1 Improved high torque fastener and driving tool
11/06/1984US4480514 Driving tool for tamper resistant screw
11/06/1984US4480513 Bolt-lock structure
10/1984
10/23/1984US4478115 Tamper-resistant fastener key
09/1984
09/25/1984US4473169 Anti-theft plug and fastener
08/1984
08/29/1984EP0116645A1 Bolt adapted for one-sided tightening with tightening tool
08/21/1984US4466314 Nonslip fastener torquing system
08/14/1984US4464957 Fastener and driver combination
07/1984
07/10/1984US4459074 Socket drive
06/1984
06/27/1984EP0112030A1 Rotatable fasteners
06/19/1984CA1169277A1 Screw driving socket
06/12/1984CA1168908A1 Screw and screw forming tool
06/05/1984US4452556 Plastic headed fastener
05/1984
05/30/1984EP0109693A1 Connecting device for packaging layers
05/08/1984US4447055 Playground equipment with wooden timbers having internal fasteners
04/1984
04/24/1984CA1166048A1 Hexagon socket head bolt
02/1984
02/07/1984US4430035 Fastener driver head and tool and coupling therebetween
02/07/1984US4429600 Tamper-proof screw assembly
02/07/1984US4429599 One way screwdriver
01/1984
01/24/1984US4426896 Tamper-proof fastener removal tool
01/17/1984CA1160484A1 Plastic headed fastener
10/1983
10/13/1983WO1983003451A1 Bolt adapted for one-sided tightening with tightening tool
10/12/1983EP0090869A1 Improvements in or relating to screws
09/1983
09/13/1983CA1153591A1 Plastic-headed fastener assembly
09/07/1983EP0087721A1 Shaping of the head of and the wrench for a screw
09/01/1983WO1983002983A1 Configuration of head and tool-wrench for a screw
08/1983
08/30/1983CA1152785A1 Recessed head screw
06/1983
06/23/1983WO1983002137A1 Socket drive
05/1983
05/24/1983US4384812 Screw and screw forming tool
05/10/1983CA1145979A1 Anti-vandalism nut assembly
02/1983
02/15/1983US4373842 Plastic-headed fastener assembly
01/1983
01/19/1983EP0070247A2 Universal anti-theft device, especially for nuts and bolts to fix car-wheels
11/1982
11/30/1982US4361412 Fastener with improved torque transfer surfaces
10/1982
10/26/1982US4355552 Recessed head screw
10/05/1982US4352614 Tamper resistant threaded fastener
08/1982
08/24/1982US4345378 Scissors with adjustable pivot
08/11/1982EP0057173A1 Screw type fastener, and its manufacture
07/1982
07/20/1982US4339971 Fastener and driving tool
07/13/1982US4338835 Recessed head fastener and driver therefor
06/1982
06/22/1982CA1126062A1 Double-ended stud with combined driving and locking means
06/22/1982CA1126061A1 Fastener and drive system
06/08/1982CA1125058A1 Fastener and driver assembly having a series of flutes and lobes
04/1982
04/20/1982US4325153 Combined screwdriver and boring apparatus
04/06/1982CA1121191A1 Dual head fastener
03/1982
03/30/1982CA1120754A1 Recessed head screw
02/1982
02/18/1982WO1982000504A1 Screw type fastener,and its manufacture
02/17/1982EP0046010A1 Fastener and driver combination
01/1982
01/19/1982US4311071 Screw driver and screw head system
11/1981
11/24/1981US4302137 Anti-tamper fastening means
11/11/1981EP0039414A1 Slotted screw
10/1981
10/21/1981EP0038031A1 Recessed head screw
07/1981
07/28/1981US4280348 Automotive vehicle wheel cover locking means
07/21/1981CA1105298A1 Long-pitch re-rolled crest thread
07/07/1981US4277107 Security bolts for trailer wheels
06/1981
06/09/1981US4272209 Anti-vandalism nut assembly
06/02/1981US4271095 Intake
05/1981
05/26/1981US4269246 Fastener and driver assembly
05/19/1981US4267870 Screw fastener with multi-point wrenching head and locking capabilities
04/1981
04/08/1981EP0026441A1 Nail presenting a screw-threaded shaft
03/1981
03/31/1981US4258596 Tamper-resistant fastener
01/1981
01/06/1981US4242932 Fastening device
12/1980
12/09/1980US4237949 Anti-theft fastener
10/1980
10/28/1980CA1088353A1 Rotary drive fastener
10/21/1980US4228723 Fastener recess
10/21/1980US4228722 Upset bolt
09/1980
09/23/1980US4223585 Double-ended stud with combined driving and locking means
07/1980
07/09/1980EP0013274A1 Mechanical connectors and fixing tool therefor
07/08/1980US4211128 Vehicle wheel lug nut apparatus
05/1980
05/27/1980CA1078229A1 Screwdriver and screw for use therewith
05/13/1980US4202244 Recessed head screw
04/1980
04/15/1980US4197889 Security screw, driver therefor, and process
03/1980
03/04/1980US4191228 Tool assembly
02/1980
02/26/1980US4189976 Dual head fastener
02/12/1980US4187892 Recessed screw heads and drivers
01/1980
01/09/1980EP0006139A1 Headed cruciform recess fastener and method of making same
11/1979
11/20/1979CA1066542A1 Lobular socket head fastener with service slot
10/1979
10/23/1979US4171662 Security screw
10/23/1979CA1064654A2 Tool for forming a recess in the end of a fastener
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