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Class Information
Number: 81/436
Name: Tools > Wrench, screwdriver, or driver therefor > Having work engaging and force exerting portion inserted into cavity (e.g., allen wrench, screwdriver)
Description: Wrench or screwdriver in which the work-engaging and strain-exerting portion is intended to be inserted into a cavity (e.g., hole, aperture, etc.) in the surface of the rotatable work.










Sub-classes under this class:

Class Number Class Name Patents
81/437 Combined with or usable as diverse-type wrench 100
81/438 Having structure adapting portion or tool for separation 236
81/439 Including discrete, separately usable inserted portions 232
81/441 Inserted portion cuts into or deforms cavity 71
81/460 Inserted portion having plural, noncollinear blades (e.g., phillips) 125
81/461 Inserted portion having plural, separate, work-engaging projections 121
81/442 Inserted portion having relatively movable components 30
81/459 Inserted portion having threaded periphery 25
81/450 Inserted portion mounted to pivot or swivel relative to longitudinal axis of handle 28
81/451 With separate means for guiding or gripping work 197


Patents under this class:
1 2 3 4 5 6

Patent Number Title Of Patent Date Issued
8640575 Ball end hex wrench Feb. 4, 2014
8621961 Multi-purpose tool Jan. 7, 2014
8567292 Screw removal tool Oct. 29, 2013
8545156 Screw tightening structure, screw and screw tightening tool Oct. 1, 2013
8516932 Screwdriver bit Aug. 27, 2013
8511959 Screw tightening structure, screw and screw tightening tool Aug. 20, 2013
8418587 Tool bit Apr. 16, 2013
8413549 Revolving screwdriver with ratchet structure Apr. 9, 2013
8393252 Wrench Mar. 12, 2013
8387491 High strength fastener system Mar. 5, 2013
8381621 Hand tool alternately-magnetizing structure Feb. 26, 2013
8371190 Fingertip tool holder Feb. 12, 2013
8359953 Tool element Jan. 29, 2013
8267491 Vending machine compartment assembly Sep. 18, 2012
8261639 Screwdriver Sep. 11, 2012
8261641 Screw and driver bit Sep. 11, 2012
8220368 Screwdriver with changeable head Jul. 17, 2012
8182187 Drive system May. 22, 2012
8176818 Rotary tool with an indicating coiled spring May. 15, 2012
8171826 High strength fastener system May. 8, 2012
8141236 Ganged removal of component device cover screws Mar. 27, 2012
8028608 Torque-limiting fastener driver Oct. 4, 2011
7926391 Screwdriver with ratchet mechanism Apr. 19, 2011
7891274 High strength fastener system Feb. 22, 2011
7882769 Insulating screwdriver having wear identification function Feb. 8, 2011
7836801 Screwdriver bit set with identification functions Nov. 23, 2010
7730812 Screw head and tool for use therewith Jun. 8, 2010
7723953 Battery-operated screwdriver and charger shell therefor May. 25, 2010
7650820 Handled tool Jan. 26, 2010
7648086 Nozzle device for use in a paper machine, board machine, pulp dewatering machine or similar machines Jan. 19, 2010
7611521 Apparatus and methods for tendon or ligament repair Nov. 3, 2009
7484440 Asymmetric wrench and fastener system Feb. 3, 2009
7437979 Screwdriver bit Oct. 21, 2008
7383755 Tool set Jun. 10, 2008
7367979 Screwdriver May. 6, 2008
7344118 Holder for supporting a screwdriver from the handle thereof Mar. 18, 2008
7328636 Hex wrench device Feb. 12, 2008
7325469 Co-extruded screwdriver Feb. 5, 2008
7322265 Compound screwdriver head Jan. 29, 2008
7311026 Strip resistant screw head and screwdriver tip in combination Dec. 25, 2007
7290305 Mop with cleaning pad insertion tool Nov. 6, 2007
7284466 Hand tool having replaceable tips Oct. 23, 2007
7272997 Floatable hand tool Sep. 25, 2007
7270031 Light bulb tool Sep. 18, 2007
7267032 Multi-offset driver tool Sep. 11, 2007
7267034 Telescopic driving tool Sep. 11, 2007
7261016 Multi-functional screwdriver Aug. 28, 2007
7225710 Combination driver and combination fastener Jun. 5, 2007
7207247 Hammer head wrench Apr. 24, 2007
7194935 Hexagonal driving tool with pawl piece Mar. 27, 2007

1 2 3 4 5 6










 
 
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