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Class Information
Number: 81/53.2
Name: Tools > Wrench, screwdriver, or driver therefor > Stud-removal and implacement
Description: Wrench or screwdriver, especially adapted to extract or drive headless stud bolts.










Patents under this class:
1 2 3 4

Patent Number Title Of Patent Date Issued
4940370 Inner lug removal tool Jul. 10, 1990
4920834 Socket pipe wrench May. 1, 1990
4899626 Bolt or stud mounting and extracting tool Feb. 13, 1990
4895055 Installation tool for an anchor element Jan. 23, 1990
4875289 Chisel for removing damaged bolts, nuts and screws Oct. 24, 1989
4856386 Socket assembly for multiple size wrenching surfaces Aug. 15, 1989
4831902 Broken bolt extractor May. 23, 1989
4819519 Automatic stud driver having thread relief for high torque applications Apr. 11, 1989
4805495 Bolt head reforming tool Feb. 21, 1989
4781082 Kit facilitating removal of wheel lug stud and associated method Nov. 1, 1988
4777850 Drill-out threaded broken bolt extractor Oct. 18, 1988
4759237 Self-locking nut and tightening tool Jul. 26, 1988
4745831 Setting tool for screwing-in threaded rods May. 24, 1988
4741229 Stud installer May. 3, 1988
4741228 Stud extractor May. 3, 1988
4732059 Driver for reinforcement bar chemical anchor Mar. 22, 1988
4724730 Wrench socket with cam locking feature Feb. 16, 1988
4716793 Polygonal tool for removal of stripped hex head fasteners Jan. 5, 1988
4713990 Bolt extracting tool Dec. 22, 1987
4688315 Screw extractor and method of using same Aug. 25, 1987
4684138 Chuck for use in driving lag rods with a drill having a reversible motor Aug. 4, 1987
4676125 Adjustable socket Jun. 30, 1987
4671141 Rotary torque device Jun. 9, 1987
4655108 Tube-squaring tool and clamping mechanism Apr. 7, 1987
4651596 Different taper stud remover/installer Mar. 24, 1987
4631986 Stud removing and transfer adaption mode Dec. 30, 1986
4611513 Open access stud gripping tool Sep. 16, 1986
4607547 Stripped hex head drive socket Aug. 26, 1986
4604917 Easy-out threaded fastener extractor Aug. 12, 1986
4603605 Thread vise Aug. 5, 1986
4590671 Tool for removing split pin remnants from a nuclear reactor vessel May. 27, 1986
4590826 Combination stud driving tool and torque limiting device May. 27, 1986
4572035 Tool constructions for removing frozen nuts Feb. 25, 1986
4569257 Collar unthreader Feb. 11, 1986
4565111 Device for rotating and axially moving a bolt Jan. 21, 1986
4562755 Installation tool for stud/insert with lock ring Jan. 7, 1986
4548103 Stud drive tool Oct. 22, 1985
4539872 Tool for supplying and driving a sequence of threaded fasteners Sep. 10, 1985
4536115 Anchor apparatus for insertion into a pre-formed hole Aug. 20, 1985
4513643 Automatic stud driving tool Apr. 30, 1985
4476749 Automatic stud driver Oct. 16, 1984
4470329 Automatic stud driving tool Sep. 11, 1984
4426896 Tamper-proof fastener removal tool Jan. 24, 1984
4417487 Tool for cleaning or changing mig-contact-tips Nov. 29, 1983
4404875 Installer drive unit for chemical anchor Sep. 20, 1983
4389913 Screw extractor Jun. 28, 1983
4308767 Stud wrench Jan. 5, 1982
4304156 Apparatus for applying covers to nuclear reactor vessels Dec. 8, 1981
4204308 Screw extracting device May. 27, 1980
4192205 Stud extractor Mar. 11, 1980

1 2 3 4










 
 
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