Patents
Sitemap › B25 - Hand tools; Portable power-driven tools; Handles for hand implements; Workshop equipment; Manipulators › B25B - Tools or bench devices not otherwise provided for, for fastening, connecting, disengaging, or holding › B25B 21 - Portable power-driven screw or nut setting or loosening tools; Attachments for drilling apparatus serving the same purpose
Patents for B25B 21 - Portable power-driven screw or nut setting or loosening tools; Attachments for drilling apparatus serving the same purpose (7,850)
06/1999
06/01/1999US5908076 For a drive spindle of a power tool
06/01/1999CA2223340A1 Barge ratchet driver with reaction bars
05/1999
05/27/1999WO1998051450A3 Tool system that can be coupled to a lathe drive shaft
05/25/1999US5906244 Rotary impact tool with involute profile hammer
05/20/1999WO1999024224A2 Hand wrench with torque augmenting means
05/20/1999DE19804648C1 Apparatus for remotely controlled insertion and tightening of a screw
05/12/1999DE19842378A1 Pneumatic manual screwdriver device with motorized piston and screw jaws
05/12/1999CN2317998Y Improved tool joint for loading and unloading fastener
05/11/1999US5901794 Pneumatic power wrench
05/06/1999EP0913593A1 Nut and nut tightening and loosening arrangement
05/04/1999US5899123 Method of fastening a fastener to a workpiece
04/1999
04/28/1999EP0911119A2 Method for determining the installed torque in a screw joint at impulse tightening and a torque impulse tool for tightening a screw joint to a predetermined torque level
04/27/1999US5897454 Automatic variable transmission for power tool
04/27/1999US5897045 Fastener dispensing apparatus for stand-up fastener driving tool and method therefor
04/27/1999US5896789 Ratchet wrench head
04/21/1999CN2314899Y Torque regulator for motor tools
04/21/1999CN1214292A Ratchet wrench head
04/15/1999WO1999017909A1 Rotary impact tool with involute profile hammer
04/15/1999DE19741548C1 Pneumatic hand-held screwdriver
04/15/1999CA2273251A1 Rotary impact tool with involute profile hammer
04/14/1999EP0908273A2 Ratchet wrench head
04/14/1999CN1042902C Switch for electric tools
04/13/1999US5893420 Multi-core cable connector for power wrench
03/1999
03/31/1999EP0904899A2 Tool for screwing/unscrewing nuts provided with toothing on their external surface
03/31/1999EP0904178A1 Hyraulic power wrench
03/30/1999US5889922 Drive arrangement for an electric motor
03/30/1999US5887666 Impact wrench structure
03/30/1999US5887494 Multi-gear attachment tool for a steering wheel assembly
03/25/1999WO1999014017A2 Powered-operated screwdriving device
03/24/1999EP0903203A2 Fastener collation tube for stand-up fastener driving tool and combination of said tube and tool
03/24/1999EP0903202A2 Fastener dispensing apparatus for stand-up fastener driving tool and method for dispensing fasteners from said apparatus
03/24/1999CN1211491A Fastener dispensing apparatus for stand-up fastener driving tool and method therefor
03/24/1999CN1211490A Fastener collation tube for stand-up fastener driving tool
03/23/1999US5884541 Socket for lever removal of screwdriver bit
03/17/1999CN2310692Y Double-end motor-driven wheel removing tool
03/17/1999CN2310691Y Four-end motor-driven wheel removing tool
03/16/1999US5881855 Impulse wrench with wrap spring clutch assembly
03/16/1999US5881612 Finger guard for tubenut tools
03/10/1999EP0900632A2 Pneumatic power wrench with adjustable exhaust restriction
03/04/1999WO1999010965A1 Linear/rotary electromagnetic device
02/1999
02/18/1999WO1999007521A1 Impact tool driver
02/17/1999CN2307687Y Small electric controlled hydraulic wrench for dismounting vehicle tyre
02/17/1999CN2307659Y Multifunction electric screw driver
02/09/1999US5868208 Power tool
02/09/1999US5868047 Insert bit for use with a powered screwdriver
02/03/1999EP0894576A2 Twin lobe impact mechanism
02/03/1999CN2306106Y Mobile hand-held electric trigger
02/02/1999US5865076 Clutch mechanism for screw tightening machine
01/1999
01/29/1999CA2242446A1 Twin lobe impact mechanism
01/27/1999CN2305272Y Electric spanners
01/27/1999CN1205931A Pneumatic tool with reverse valve having overdrive
01/26/1999US5862724 Screw driving method and screw driving apparatus
01/21/1999DE19829839A1 Pneumatically operated screwdriver
01/20/1999CN1205405A Shaft coupling
01/13/1999EP0799113B1 Screw driving-in process
01/07/1999EP0814941B1 Torque wrench
12/1998
12/30/1998EP0886560A1 Power nutrunner with torque release clutch and a setting tool
12/30/1998EP0886559A1 Power nutrunner
12/30/1998CN2302093Y Driving device for electric screwdriver
12/23/1998WO1998057780A1 Pyrotechnical unscrewing-screwing apparatus
12/23/1998EP0885693A2 Hydraulic torque impulse generator
12/23/1998CN2301301Y Screw setting and loosening machine
12/23/1998CN1202850A Power hand tool with rotatable handle
12/23/1998CA2294322A1 Pyrotechnical unscrewing-screwing apparatus
12/16/1998EP0741633B1 Insert bit for use with a powered screwdriver
12/16/1998CN1202124A Coupling device and rotary drive tool therefor
12/15/1998US5848655 Oscillating mass-based tool with dual stiffness spring
12/10/1998WO1998055269A1 Screwdriver adapter
12/10/1998WO1998055267A1 Ratchet mechanism with laminated parts and method of making same
12/10/1998CA2292455A1 Ratchet mechanism with laminated parts and method of making same
12/09/1998CN2299692Y Pneumatic spanner
12/09/1998CN2299691Y Electric wrench
12/09/1998CN1041066C Adjustable wrench
12/08/1998US5847334 Silencer mechanism for use in an impact wrench
12/08/1998US5845718 Resonant oscillating mass-based torquing tool
12/03/1998WO1998053960A1 Oscillating mass-based tool with dual stiffness spring
12/03/1998WO1998053959A1 Resonant oscillating mass-based torquing tool
12/01/1998US5842263 Method and manufacture of an axial tensioned bolt
11/1998
11/26/1998DE19750557A1 Self-tapping screw placer device used with screw driver
11/25/1998EP0879670A1 Tightening device
11/24/1998US5839518 Centrifugal force-controlled coupling switch mechanism for an electric drill
11/22/1998CA2205829A1 Tightening device
11/19/1998WO1998051450A2 Tool system that can be coupled to a lathe drive shaft
11/19/1998CA2298706A1 Tool system that can be coupled to a lathe drive shaft
11/17/1998US5836403 For applying intermittent torque impulses to a load
11/11/1998EP0876883A2 Pneumatic tool with a reverse valve having an overdrive
11/10/1998US5833223 For clamping a work piece on a mounting table
11/03/1998US5831402 Double direction actuating type tool of loose forward and loose backward assisting style
10/1998
10/28/1998EP0873823A1 Motorized screw driving tool
10/28/1998EP0873221A1 Power drill housing extension coupling
10/28/1998EP0873213A1 Drill bit adaptor tool
10/28/1998CN1040401C Torque wrench
10/20/1998US5823075 Hydraulically powered tightening and loosening spanner
10/15/1998DE19723056C1 Accessory tool for screw fasteners
10/07/1998EP0868265A1 Hand-held power tool with on/off switch in rear part of ergonomic handle
10/06/1998US5816121 Cordless fastening tool
10/06/1998CA2124871C Universal joint for torque transmitting tools
09/1998
09/29/1998US5813478 Pulse tool
09/23/1998EP0865345A1 Power hand tool with rotatable handle
09/23/1998EP0593742B1 Method of and device for mechanical tensioning of bolts, studs and the like
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