Hand Tool Design Corporation

Easco Hand Tools, Inc.

Other

David Ling

Hsien-Chung Tuan-Mu

Bobby Hu

Hsien Chung Tuan-Mu

A spanner comprises a box end that has an inner periphery consisting of a number of wall faces to define a first polygonal receiving space. Each wall face includes a groove defined therein. The grooves of the wall faces together define a second polygonal receiving space. At least one of the grooves includes a closed first end and an open second end.

Spanner with prevention of disengagement of fasteners

A tool rack assembly comprises a board and a tool rack detachably mounted to the board. In another embodiment, a tool try-on device is provided comprises a board and a rotating member rotatably mounted to the board. The rotating member is engageable with an end of a tool. The rotating member moves in a direction transverse to a plane on which the board lies when the tool engaged with the rotating member is turned.

Tool rack assembly

A process for manufacturing ratchet wheels including the steps of: forming a cylindrical forging billet by hot or cold forging, the forging billet having a thru hole of inter-communicating recesses which are pre-formed in a forging die; providing a broach having teeth formed thereon; machining the forging billet into a workpiece having a sidewall with two annular grooves on the sidewall; forming a semi-product having a driving recess which is complementary in shape to the teeth by operating the broach through the workpiece along the thru hole; and forming a finished product having a plurality of teeth on a sidewall thereof by milling the semi-product.

Process for making ratchet wheels

A tool rack assembly includes a board and a tool rack detachably mounted to the board. In another embodiment, a tool try-on device is provided including a board and a rotating member rotatably mounted to the board. The rotating member is engageable with an end of a tool. The rotating member moves in a direction transverse to a plane on which the board lies when the tool engaged with the rotating member is turned.

A process for making ratchet wheels includes a step of providing a work with a first end and a second end, a step of punching the work by means of a punch so as to define a large recess through the second end, a step of cutting away the first end of the work, a step of defining two annular grooves in a periphery of the work and a step of forming a plurality of teeth on the work. The process may include, before the step of cutting away the first end of the work, a step of punching the work in order to define a small recess with a diameter smaller than that of the large recess, a step of punching the work so as to define an opening with a diameter smaller than that of the small recess wherein the opening extends through the first end of the work. The process may include a step of defining a shallow recess in the second end of the work before the step of defining the large recess.

A reversible ratchet wrench includes a handle having a driving head defining a driving chamber, a receiving chamber defined in the handle, a retaining recess defined in the driving chamber and connecting to the receiving chamber, and a driving member secured in the driving chamber and provided with a plurality of tooth-shaped first retaining portions. A direction control device includes a direction control member rotatably mounted in the receiving chamber, a retaining member pivotally mounted in the retaining recess and having a first side provided with a plurality of tooth-shaped second retaining portions meshing with the tooth-shaped first retaining portions, a pressing member rotated by the direction control member and slidably rested on a second side of the retaining member for pivoting the retaining member, and an elastic member urging the pressing member on the second side of the retaining member.

Reversible ratchet wrench with high torsion

A toolbox has a tool-receiving plate received therein. The tool-receiving plate includes a number of tool-receiving grooves in both sides thereof. The toolbox includes a first casing and a second casing that is pivotally connected to the first casing at one end thereof. Each of the first and second casings has an opening for viewing and displaying purposes. Glass is fitted in each opening to avoid theft.

Toolbox with dual tool-receiving grooves and display in both sides thereof

A socket adaptor is mounted to a box end of a ratchet-type ring spanner of the type having a hollow ratchet wheel rotatably mounted in the box end. The socket adaptor includes a disc, a mediate section projected from the disc and releasably engaged with the hollow ratchet wheel mounted in the box end of the wrench, and a distal socket engaging portion beyond the hollow ratchet wheel. The mediate section of the socket adaptor has an outer periphery for releasably engaging with an inner periphery of the hollow ratchet wheel to rotate therewith. The distal socket engaging portion is to be releasably engaged with a socket.

Socket adaptor for ratchet

A ratcheting tool includes a handle and a head in which a gear wheel is rotatably mounted. A pawl is mounted in the head and includes a toothed first side engaged with the gear wheel and a second side facing away from the gear wheel, with the second side of the pawl including two spaced operative sections. A ball is biased to engage with one of the operative sections of the pawl, thereby biasing the pawl teeth to mesh with the gear wheel teeth and biasing the pawl to bear against a wall of the head. A switch member is pivotally mounted to the head and includes a first end engaged with the pawl to move therewith and a second end for manual operation. The switch member is pivotally movable between two positions to optionally cause the ball to engage with one of the operative sections of the pawl, thereby allowing change in ratcheting direction of the ratcheting tool.

Reversible ratcheting tool with improved gear wheel/pawl engagement

A ratcheting tool includes a handle and a box end extending from the handle. The box end has a first compartment and a second compartment communicating with the first compartment, a wall defining the second compartment having a cavity. A gear wheel is rotatably mounted in the first compartment and includes an inner periphery for engaging with a fastener and an outer periphery with a number of first teeth. A pawl is mounted in the second compartment and includes a first side with a number of second teeth facing the first teeth of the gear wheel and a second side facing away from the gear wheel. The second side of the pawl includes an eccentrically located groove with a rectilinear section that is at an angle with a longitudinal direction of the handle. A ball is partially received in the cavity and contacts with the groove of the second side of the pawl. An elastic member is mounted in the cavity for biasing the ball toward the groove of the second side of the pawl. The pawl is moved toward the gear wheel to cause the second teeth of the pawl to securely mesh with the first teeth of the gear wheel. The pawl is also moved to bear against a wall defining the second compartment.

Ratcheting tool with improved gear wheel/pawl engagement

A tool display box includes a main body having a number of spaced resilient retaining plates projecting outward therefrom. A holding space is defined between each two adjacent resilient retaining plates to hold a tool by two mutually facing walls of the two adjacent resilient retaining plates. Each resilient holding plate includes a distal end having a notch defined therein. A retaining member is secured to each resilient holding plate and includes a passage aligned with the notch. A locking member is extended through the notches of the resilient holding plates and the passages of the retaining members for preventing removal of the tool in the holding space.

Tool display box

A tool display rack includes a body with a first engaging member extending from the first end thereof in which a first aperture is defined, a limiting member connected to the body at its first end by a connecting plate and having a recess defined therein, a second engaging member extending from the second end of the limiting member so as to engage with the first aperture, a second aperture defined in the second end of the limiting member so as to receive the first engaging member so that a tool extends through the recess between the body and the limiting member and is limited by the limiting member. The tool can only be taken away from the body by cutting the second engaging member extending through the first aperture in the body.

Growing community of inventors

Taichung, Taiwan

David Ling