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Class Information
Number: 81/439
Name: Tools > Wrench, screwdriver, or driver therefor > Having work engaging and force exerting portion inserted into cavity (e.g., allen wrench, screwdriver) > Including discrete, separately usable inserted portions
Description: Wrench or screwdriver including at least two discrete, cavity-engaging and strain-exerting portions which are intended to be used during separate strain-exerting operations.










Sub-classes under this class:

Class Number Class Name Patents
81/440 Pivotally or rotatably mounted 119


Patents under this class:
1 2 3 4 5

Patent Number Title Of Patent Date Issued
8640574 Radial foldout tool with multiple types of tools and bit storage Feb. 4, 2014
8616096 Hand tool with torque drive shaft Dec. 31, 2013
8601916 Multifunctional hand tool Dec. 10, 2013
8534166 Screwdriver device for an inherent tool bit set Sep. 17, 2013
8490523 Lockable folding multi-tool Jul. 23, 2013
8468915 Compact tool box with ratchet driving function Jun. 25, 2013
8443508 Compound tool with screwdriver attachment May. 21, 2013
8413549 Revolving screwdriver with ratchet structure Apr. 9, 2013
8408098 Ratchet device Apr. 2, 2013
8359954 Radial foldout tool with multiple types of tools and bit storage Jan. 29, 2013
8342065 Torclip screwdriver Jan. 1, 2013
8250950 Multiple-bit hand tool with locking axial post Aug. 28, 2012
8220135 Compound tool with screwdriver attachment Jul. 17, 2012
8220368 Screwdriver with changeable head Jul. 17, 2012
8136430 Retractable screwdriver Mar. 20, 2012
8096213 Utility insert tool with spherical retaining ball member and torsion bar for securing detachable utility inserts Jan. 17, 2012
7950311 Screwdriver kit May. 31, 2011
7946203 Tool handle for holding multiple tools of different sizes during use May. 24, 2011
7938045 Driving tool May. 10, 2011
7818843 Multi-function tool apparatus and system Oct. 26, 2010
7810413 Hexagon spanner handle for increasing turning force Oct. 12, 2010
7743687 Screwdriver helper Jun. 29, 2010
7665391 Multi-bit screwdriver Feb. 23, 2010
7634956 Multipurpose folding tool with tool bit holder and blade lock Dec. 22, 2009
7603931 Angularly offset wrench Oct. 20, 2009
7565852 Screwdriver with rotary cartridge including replaceable bits therein Jul. 28, 2009
7562606 Multi-bit driver with removable and replaceable tool bits Jul. 21, 2009
7481138 Adjustable bit tool for driving screwdriver screws and bolts Jan. 27, 2009
7441481 Socket wrench having multiple driving heads Oct. 28, 2008
7413426 Denture flask compress tool and process Aug. 19, 2008
7395739 Portable screwdriver Jul. 8, 2008
7383755 Tool set Jun. 10, 2008
7331262 Drive bit holder and method of manufacturing Feb. 19, 2008
7328636 Hex wrench device Feb. 12, 2008
7293484 Opener head retainer Nov. 13, 2007
7290470 Multi-bit driver with rotatable sleeve Nov. 6, 2007
7287451 Multiple bit screwdriver Oct. 30, 2007
7284466 Hand tool having replaceable tips Oct. 23, 2007
7255028 Multi-bit precision screwdriver Aug. 14, 2007
7249543 4-in-1 pocket screwdriver Jul. 31, 2007
7243580 Torque limiting driver with easily disassembled components for sterilization Jul. 17, 2007
7237458 Ratchet screwdriver with a replaceable bit magazine unit Jul. 3, 2007
7188555 Multi-bit driver Mar. 13, 2007
7188553 Extendable extension and method of use Mar. 13, 2007
7162802 Hand tool Jan. 16, 2007
7156002 Tool shaft and tool bit arrangement Jan. 2, 2007
7156005 Multiple bit hand tool with automatic bit locking Jan. 2, 2007
7134368 Interchangeable screwdriver for tool bits Nov. 14, 2006
7124665 Screw positioning device for a screwdriver Oct. 24, 2006
7121173 Tool handle self-contained a set of head tips Oct. 17, 2006

1 2 3 4 5










 
 
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