Quick action bar clamp
AssigneePetersen Manufacturing Co., Inc.
InventorsJoseph A. Sorensen, Dwight L. Gatzemeyer
Life of this patent
Estimating the term…
Abstract
A hand tool consists of a movable jaw, a slide bar wherein the movable jaw is mounted to the slide bar. A support assembly is provided for supporting the slide bar. A stationary jaw is spaced away from the support assembly and is provided with at least a front portion. A one-way drive arrangement is designed having at least a driving lever. A cam having a longitudinally extending handle is pivotally mounted at the support assembly and contacts the driving lever. The cam disengages the driving lever when the one-way drive arrangement is released from the slide bar, and the cam engages the driving lever when the one-way drive arrangement engages the slide bar.
Claims12
A hand tool comprising:
- a movable jaw;
- a stationary jaw;
- a slide bar, said movable jaw being mounted to said slide bar;
- support means for supporting said slide bar;
- said stationary jaw being spaced away from said support means and having at least a front portion;
- one-way drive means for releasably engaging and, when engaged, for advancing said slide bar and said movable jaw to an advance position and holding said movable jaw in said advanced position, said one-way drive means having at least a driving lever;
- and cam means having a longitudinally extending handle, said cam means having an eccentric working surface, said cam means pivotably mounted at said support means and contacting said driving lever, said cam means gradually disengaging said driving lever when said one-way drive means is released from said slide bar, and said cam means gradually engaging said driving lever when said one-way drive means engages said slide bar;
- whereby said eccentric working surface engages said driving lever during a substantial part of pivotal motion of said cam means.
A hand tool comprising:
- a movable jaw;
- a slide bar, said movable jaw being mounted to said slide bar;
- a stationary jaw;
- support means for supporting said slide bar;
- said stationary jaw being spaced away from said support means and having at least a front portion;
- one-way drive means for releasably engaging and, when engaged, for advancing said slide bar and said movable jaw to an advanced position and holding said movable jaw in said advanced position, said one-way drive means having at least a driving lever;
- and cam means having a longitudinally extending handle, said cam means pivotably mounted at said support means and contacting said driving lever, said cam means disengaging said driving lever when said one-way drive means is released from said slide bar, and said cam means engaging said driving lever when said one way drive means engages said slide bar;
- said cam means further comprising a handle unit and an engaging portion positioned at one end of said handle unit,
- said engaging portion having a cam-shaped portion and an elongated finger, wherein said cam-shaped portion and the elongated finger are separated by a recess.
Dependencies are inferred from the claim text.