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

Claim 9:
10. A pipe wrench, comprising:
a head comprising an aperture;
a bore at a first end of the head and extending along a longitudinal axis of the pipe 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; and
a channel lock mechanism configured to retain the extendable handle within the bore;
a handle length locking mechanism including a lever pivotally coupled to the head and a friction element contacting the lever, the lever comprising a base and a wall at an end, wherein the lever is rotatable about a pivot between a locked position in which the lever pushes the friction element into engagement with an outer surface of the extendable handle such that the extendable handle is fixed with respect to the head and an unlocked position in which the base faces the upper jaw and the extendable handle is adjustable with respect to the head;
wherein the head further includes a rear surface of the head with a recess shaped to receive the lever when the lever is in the locked position and a friction block positioned between the lever and the extendable handle.