US 12,466,052 B2
Extendable wrench
Matthew A. Lownik, Wauwatosa, WI (US)
Assigned to Milwaukee Electric Tool Corporation, Brookfield, WI (US)
Filed by Milwaukee Electric Tool Corporation, Brookfield, WI (US)
Filed on Dec. 27, 2023, as Appl. No. 18/396,943.
Application 18/396,943 is a continuation of application No. 17/395,068, filed on Aug. 5, 2021, granted, now 11,890,742.
Application 17/395,068 is a continuation of application No. PCT/US2021/044280, filed on Aug. 3, 2021.
Claims priority of provisional application 63/060,930, filed on Aug. 4, 2020.
Prior Publication US 2024/0123599 A1, Apr. 18, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. B25G 1/04 (2006.01); B25B 13/50 (2006.01); B25B 13/48 (2006.01)
CPC B25G 1/043 (2013.01) [B25B 13/5058 (2013.01); B25B 13/481 (2013.01)] 19 Claims
OG exemplary drawing
 
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 defining a lower contact region;
an upper jaw partially extending through the aperture of the head, the upper jaw defining an upper contact region;
an actuator engaged with 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 positioned between the lever and the extendable handle;
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 end of the lever engages the friction block in both the locked position and in the unlocked position;
wherein the head further comprises a rear surface, and wherein the rear surface includes a recess configured to receive the lever when the lever is in the locked position.