Patent ID: 11890742
Assignee: MILWAUKEE ELECTRIC TOOL CORPORATION
Field: Machine tools (Mechanical engineering)
Classification: CPC B | IPC B

Claim 0:
1. A wrench, comprising:
a head comprising an aperture;
a bore at a first end of the head and extending along a longitudinal axis of the wrench;
a lower jaw coupled to a second end of the head, the lower jaw comprising a plurality of teeth that define a lower contact region;
an upper jaw partially extending through the aperture of the head, the upper jaw comprising a threaded section and a plurality of teeth that define an upper contact region;
an actuator comprising threads engaged with the threaded section of the upper jaw such that rotation of the actuator moves the upper jaw relative to the lower jaw;
an extendable handle received within the bore of the head;
a lever comprising an end, the end comprising at least two cam surfaces; and
a friction block;
wherein the lever is rotatable about a pivot between a locked position in which the extendable handle is fixed with respect to the head and an unlocked position in which the extendable handle is adjustable with respect to the head;
wherein the head further comprises a rear surface, and the rear surface includes a recess shaped to receive the lever when the lever is in the locked position and wherein the friction block is positioned between the lever and the extendable handle;
wherein the end of the lever engages the friction block in both the locked position and in the unlocked position.