US 2006/0075853 A1Published application

Adjustable wrench

OwnerHollis Sherburneinventor

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Abstract

An adjustable wrench and method for loosening or tightening a fastener includes a handle member having a fixed jaw segment, a substantially transverse channel therethrough, and a void in communication with the channel. Also, a movable jaw member having a serrated toothed rack that is slidably engaged within the channel. In addition, a beam that is slidably engaged within the void, the beam including a toothed rack that selectably matably engages with the movable jaw toothed rack to help secure the jaw in position. Finally, included is a trigger member that is pivotally attached to the movable jaw member and is slidably engaged with the handle member, the trigger facilitates manual movement of the movable jaw from the closed state to the open state and vice versa, when the movable jaw toothed rack and the beam toothed rack are selectively disengaged.

Claims25

Dependent claims

An adjustable wrench for loosening or tightening a fastener, comprising:

(a) a handle member having a longitudinal axis between a handle first end portion, a handle central portion, and a handle second end portion, said first end portion including a fixed jaw segment, a fixed jaw surface plane, and a transverse axis to said fixed jaw surface plane, said first end portion also includes a channel therethrough positioned substantially parallel to said transverse axis, said central portion includes a void in communication with said channel, with said void having a longitudinal axis;
(b) a movable jaw member including a movable jaw segment, a movable jaw surface plane, and an engagement portion, said engagement portion is slidably engaged within said channel being operational to move said movable jaw member from an open state to a closed state and from the closed state to the open state, said movable jaw member also includes a serrated toothed rack whose pitch line forms an acute angle in relation to said movable jaw surface plane;
(c) a beam having a longitudinal axis, said beam is slidably engaged for reciprocative movement within said void, said beam including an end portion capable of projecting into said channel, said end portion having a serrated toothed rack that selectively matably engages with said movable jaw member serrated toothed rack, wherein said beam is operational to help secure said movable jaw member at a selected position between the closed state and the open state when said beam serrated toothed rack matably engages with said movable jaw member serrated toothed rack;
and
(d) a trigger member pivotally attached to said movable jaw member and slidably engaged to said handle member, wherein said trigger is operational to facilitate manual movement of said movable jaw member from the closed state to the open state and from the open state to the closed state when said beam serrated toothed rack is selectively disengaged from said movable jaw member serrated toothed rack.

2 more elements

An adjustable wrench for loosening or tightening a fastener, comprising:

(a) a handle member having a longitudinal axis between a handle first end portion, a handle central portion, and a handle second end portion, said first end portion including a fixed jaw segment, a fixed jaw surface plane, and a transverse axis to said fixed jaw surface plane, said first end portion also includes a channel therethrough positioned substantially parallel to said transverse axis, said central portion includes a void in communication with said channel, with said void having a longitudinal axis;
(b) a movable jaw member including a movable jaw segment, a movable jaw surface plane, and an engagement portion, said engagement portion is slidably engaged within said channel being operational to move said movable jaw member from an open state to a closed state and from the closed state to the open state, said movable jaw member also includes a serrated toothed rack whose pitch line forms an acute angle in relation to said movable jaw surface plane;
(c) a beam having a longitudinal axis, said beam is slidably engaged for reciprocative movement within said void, said beam including an end portion capable of projecting into said channel, said end portion having a serrated toothed rack that selectively matably engages with said movable jaw member serrated toothed rack, wherein said beam is operational to help secure said movable jaw member at a selected position between the closed state and the open state when said beam serrated toothed rack matably engages with said movable jaw member serrated toothed rack;
(d) a means for urging said beam serrated toothed rack to matably engage with said movable jaw member serrated toothed rack, wherein said means assists in urging said movable jaw member to a selected position moving from the open state to the closed state resulting in said movable jaw member in a secured position state upon the fastener against moving toward the open state, being operational to allow said adjustable wrench to loosen or tighten the fastener;
and
(e) a means for manually disengaging said beam serrated toothed rack from said movable jaw member serrated toothed rack, being operational to facilitate free slidable engagement of said movable jaw member within said channel from the open state to a closed state and from the closed state to the open state.

3 more elements

A method of using an adjustable wrench for loosening or tightening a fastener, comprising the steps of:

(a) providing an adjustable wrench assembly that includes a handle member with a fixed jaw segment, a movable jaw member with a serrated toothed rack, a beam with a serrated toothed rack, a means for urging said beam serrated toothed rack to matably engage with said movable jaw member serrated toothed rack, wherein said movable jaw member is assisted in urging toward a closed state and secured position state upon the fastener against moving toward the open state, a means for manually selectively disengaging said beam serrated toothed rack from said movable jaw member serrated toothed rack, and a trigger pivotally attached to said movable jaw member and slidably engaged to said handle member, said trigger member facilitating manual movement of said movable jaw member from the closed state to the open state and from the open state to the closed state when said beam serrated toothed rack is selectively disengaged from said movable jaw member toothed rack;
(b) grasping said handle member manually of said adjustable wrench assembly;
(c) moving and holding said means for manually selectively disengaging said beam serrated toothed rack from said movable jaw member serrated toothed rack;
(d) moving said trigger to selectively position said movable jaw member between the closed state and the open state;
(e) positioning said fixed jaw segment and said movable jaw member on the fastener;
(f) releasing said means for manually disengaging said beam serrated toothed rack from said movable jaw member serrated toothed rack, thus allowing said means for urging said beam serrated toothed rack to matably engage with said movable jaw member serrated toothed rack, wherein said movable jaw member is in a substantially secured position state upon the fastener;
and
(g) applying manual force to said handle member that is operational to loosen or tighten the fastener.

5 more elements

Dependencies are inferred from the claim text.