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Browse by Category: Main > Tools & Hardware
Class Information
Number: 81/52
Name: Tools > Wrench, screwdriver, or driver therefor
Description: Tool for engaging a work part and exerting or transmitting a twisting strain thereto, or means for imparting or transmitting an actuating force to such a tool.










Sub-classes under this class:

Class Number Class Name Patents
81/180.1 Attachment, or including adjunct or replaceable portion 171
81/77 Double-ended, simultaneous adjustment 14
81/64 Flexible 154
81/58 Handle clutched to head 86
81/177.1 Handle or shank 309
81/462 Having stationary structure for supporting wrench or screwdriver 58
81/436 Having work engaging and force exerting portion inserted into cavity (e.g., allen wrench, screwdriver) 266
81/186 Jaw faces 149
81/54 Machine 115
81/92 Pivoted inner jaw 11
81/ Pivoted outer jaw 0
81/111 Pivoted side jaw 60
81/90.1 Plural pivoted jaws and handle-lever 27
81/429 Responsive to movement of work 99
81/467 Responsive to torque on work 252
81/178 Reversible jaws 5
81/119 Rigid jaws 168
81/129 Slidable jaw adjustments 57
81/179 Sliding jaw face 64
81/128 Sliding jaw, cam-closing 76
81/126 Sliding jaw, handle-lever grip 41
81/176.1 Spanner 114
81/53.2 Stud-removal and implacement 158
81/57.5 Turret head 16
81/73 U-crank arm 21
81/74 Wheel or endless track operated 5
81/53.1 With elongated hot line stick 66


Patents under this class:
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Patent Number Title Of Patent Date Issued
8667868 Water heater wrench adapter and method of use Mar. 11, 2014
8661638 Wheel cylinder adjuster Mar. 4, 2014
8621962 Drain removal tool Jan. 7, 2014
8616091 Peg board display fastener and connector Dec. 31, 2013
8567292 Screw removal tool Oct. 29, 2013
8545156 Screw tightening structure, screw and screw tightening tool Oct. 1, 2013
8516927 Socket wrench with an energy-saving function Aug. 27, 2013
8511959 Screw tightening structure, screw and screw tightening tool Aug. 20, 2013
8490649 Torque indicator Jul. 23, 2013
8479616 Magnetic driving device Jul. 9, 2013
8468913 Magnetic bit holder with switch Jun. 25, 2013
8443702 Torque wrench May. 21, 2013
8413548 Grasping device for drill Apr. 9, 2013
8413549 Revolving screwdriver with ratchet structure Apr. 9, 2013
8371006 Rotary mechanical vibration mechanism Feb. 12, 2013
8245601 Screwdriver sleeve finder Aug. 21, 2012
8230566 Sleeve puller Jul. 31, 2012
8186247 Wrench May. 29, 2012
8166852 Ratchet wrench May. 1, 2012
8100891 Medical appliance with magnetic adjustment apparatus Jan. 24, 2012
8069752 Quick-release device for umbilical Dec. 6, 2011
8056219 One port plug unlocking tool Nov. 15, 2011
8051747 One-way ratchet wrench Nov. 8, 2011
8024995 Systems and methods of a power tool system with interchangeable functional attachments powered by a direct rotational drive Sep. 27, 2011
8020579 Fire hydrant security cap closure system Sep. 20, 2011
7997164 Screw fastener Aug. 16, 2011
7987572 Spark plug ground electrode shield remover Aug. 2, 2011
7836794 Bolt fastening method and bolt fastening device Nov. 23, 2010
7832310 Torque power tool Nov. 16, 2010
7758201 Light energy collection hand tool Jul. 20, 2010
7743683 Systems and methods of a power tool system with interchangeable functional attachments powered by a direct rotational drive Jun. 29, 2010
7727235 Medical fixation devices with improved torsional drive head Jun. 1, 2010
7707710 Tool for driving wedges or slides May. 4, 2010
7701172 Power driver and charger with flexible mounting system for battery pack Apr. 20, 2010
7650821 Torque-limiting mechanism Jan. 26, 2010
7574946 Magnetic assembly of a screwdriver head rod Aug. 18, 2009
7484427 Adjustable torque thread gauge assembly and method of calibration thereof Feb. 3, 2009
7441480 Disposable battery powered screw driver, locking mechanism, and accessories Oct. 28, 2008
7337697 Depth stop device Mar. 4, 2008
7334509 Torque limiting driver and assembly Feb. 26, 2008
7270036 Torque ratchet wrench Sep. 18, 2007
7267032 Multi-offset driver tool Sep. 11, 2007
7247815 Contact tip installation tool for a welding device Jul. 24, 2007
7197961 Battery-driven screwdriver with a two-part motor housing and a separate, flanged gear unit Apr. 3, 2007
7185562 Disposable battery powered screw driver, locking mechanism, and accessories Mar. 6, 2007
7152380 Apparatus and method for repairing popped wallboard nails Dec. 26, 2006
7134364 Battery-driven screwdriver Nov. 14, 2006
7117765 Color coded tool kit and methods Oct. 10, 2006
7052128 Pen-shaped spectacles repair kit May. 30, 2006
7044031 Fastener driving tool May. 16, 2006

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