US 6,305,250 B1Granted

Triple-function ratchet device

OwnerDaniel Huanginventor

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Abstract

A triple-function ratchet device includes a tubular body, a shaft which has a socket wrench and a ratchet bar rotatably disposed into the tubular body and retained by an annular ring, and a control mechanism disposed on the top of the tubular body. The control mechanism is characterized in a pair of pawls which are inserted into the tubular body and operated by a slide through a lever plate. When one of the pawls engages with the ratchet bar, the shaft rotates clockwise or counterclockwise, and when both the pawls engage with the ratchet bar, the shaft is checked without rotation.

Claims1

Dependent claims

A triple-function ratchet device comprising:

a tubular body having a first end, a second end, a top, an opening at the first end, a handle on the second end, a first and a second thru holes formed spaced apart in the top thereof, a pair of first screw holes positioned spaced apart in the top adjacent the first and second ends respectively, a tapered recess centrally formed in the top between the thru holes and a first annular groove formed in an inner periphery thereof;
a shaft member disposed into the tubular body through the opening having a first end, a second end, a socket wrench in the first end, a ratchet bar on the second end and a second annular groove formed in a periphery between the socket wrench and the ratchet bar;
an annular ring disposed into the tubular body and positioned between the first and second annular grooves;
a first and a second pawl member respectively inserted into the first and the second thru holes of the tubular body each having a beveled lower end engageable with the ratchet bar and a reduced upper end respectively engaged with the lower end of a pair of tapered springs;
a lever plate having a pair of retaining grooves spacedly formed in an underside adjacent each end thereof engaged with the tops of the tapered springs respectively, a tapered projection centrally projected downward from an underside between the retaining grooves and engaged within the tapered recess of the tubular body, a tapered groove centrally formed in a top above the tapered projection and a first and a second arcuate grooves spacedly formed in a top aside the tapered groove and communicating with the tapered groove;
a bead engaged with the tapered groove and the arcuate grooves respectively and biased by a lower end of a compression spring;
slide having a flat rectangular body, a reduced rectangular projection centrally projected upward from a top of the body and a cylindrical recess in a bottom of the body beneath the projection for receiving upper end of the compression spring;
a rectangular casing having a pair of flat ends each including a second screw hole centrally formed therein made engaged with the first screw holes of the tubular body for fastening the casing to the tubular body by means of screws, and a reduced rectangular opening centrally formed in a top for slidably receiving the rectangular projection of the slide;
whereby the lever plate is operated by the slide to the pair of pawl members to engage or disengage with the ratchet bar for limiting the directions of rotation of the shaft member.

6 more elements

Dependencies are inferred from the claim text.

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Abstract

A triple-function ratchet device comprising:

a tubular body having a first end, a second end, a top, an opening at the first end, a handle on the second end, a first and a second thru holes formed spaced apart in the top thereof, a pair of first screw holes positioned spaced apart in the top adjacent the first and second ends respectively, a tapered recess centrally formed in the top between the thru holes and a first annular groove formed in an inner periphery thereof;
a shaft member disposed into the tubular body through the opening having a first end, a second end, a socket wrench in the first end, a ratchet bar on the second end and a second annular groove formed in a periphery between the socket wrench and the ratchet bar;
an annular ring disposed into the tubular body and positioned between the first and second annular grooves;
a first and a second pawl member respectively inserted into the first and the second thru holes of the tubular body each having a beveled lower end engageable with the ratchet bar and a reduced upper end respectively engaged with the lower end of a pair of tapered springs;
a lever plate having a pair of retaining grooves spacedly formed in an underside adjacent each end thereof engaged with the tops of the tapered springs respectively, a tapered projection centrally projected downward from an underside between the retaining grooves and engaged within the tapered recess of the tubular body, a tapered groove centrally formed in a top above the tapered projection and a first and a second arcuate grooves spacedly formed in a top aside the tapered groove and communicating with the tapered groove;
a bead engaged with the tapered groove and the arcuate grooves respectively and biased by a lower end of a compression spring;
slide having a flat rectangular body, a reduced rectangular projection centrally projected upward from a top of the body and a cylindrical recess in a bottom of the body beneath the projection for receiving upper end of the compression spring;
a rectangular casing having a pair of flat ends each including a second screw hole centrally formed therein made engaged with the first screw holes of the tubular body for fastening the casing to the tubular body by means of screws, and a reduced rectangular opening centrally formed in a top for slidably receiving the rectangular projection of the slide;
whereby the lever plate is operated by the slide to the pair of pawl members to engage or disengage with the ratchet bar for limiting the directions of rotation of the shaft member.

6 more elements