US PATENT SUBCLASS 81 / 52
WRENCH, SCREWDRIVER, OR DRIVER THEREFOR

Current as of: June, 1999
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81 /   HD   TOOLS

52WRENCH, SCREWDRIVER, OR DRIVER THEREFOR {27}
53.1  DF  .~> With elongated hot line stick {1}
53.2  DF  .~> Stud-removal and implacement
429  DF  .~> Responsive to movement of work
467  DF  .~> Responsive to torque on work {7}
54  DF  .~> Machine {10}
57.5  DF  .~> Turret head
74  DF  .~> Wheel or endless track operated {1}
58  DF  .~> Handle clutched to head {7}
436  DF  .~> Having work engaging and force exerting portion inserted into cavity (e.g., allen wrench, screwdriver) {10}
64  DF  .~> Flexible {2}
73  DF  .~> U-crank arm
77  DF  .~> Double-ended, simultaneous adjustment
90.1  DF  .~> Plural pivoted jaws and handle-lever {6}
92  DF  .~> Pivoted inner jaw {2}
*  DD  .~> Pivoted outer jaw {2}
111  DF  .~> Pivoted side jaw {3}
126  DF  .~> Sliding jaw, handle-lever grip {1}
128  DF  .~> Sliding jaw, cam-closing
129  DF  .~> Slidable jaw adjustments {3}
176.1  DF  .~> Spanner {2}
119  DF  .~> Rigid jaws {3}
177.1  DF  .~> Handle or shank {8}
178  DF  .~> Reversible jaws
179  DF  .~> Sliding jaw face
462  DF  .~> Having stationary structure for supporting wrench or screwdriver
180.1  DF  .~> Attachment, or including adjunct or replaceable portion {6}
186  DF  .~> Jaw faces

DEFINITION

Classification: 81/52

WRENCH, SCREWDRIVER, OR DRIVER THEREFOR:

(under the class definition) 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.

(1) Note. A hand tool for rotating a lever by merely pulling or pushing the tool along its length is excluded. To be properly classified here, the work engaging portion of a hand tool must move other than rectilinearly.

(2) Note. This subclass is the residual locus for tools which impart a twisting strain to the work and are not provided for elsewhere.

SEE OR SEARCH THIS CLASS, SUBCLASS:

3.07+, for a tool for grasping and removing a receptacle closure.

463+, for impact delivering wrenches.

SEE OR SEARCH CLASS

408, Cutting by Use of Rotating Axially Moving Tool, 120+, for a wrench particularly adapted to rotate a cutting tool of that class.

470, Threaded, Headed Fastener, or Washer Making: Process and Apparatus,

61, for devices peculiarly adapted for rotating a tap, other than provided for in Class 408.