Abstract: A hand tool includes a handle section, a working end operably coupled to the handle section, and a jaw assembly disposed at the working end. The jaw assembly includes a movable jaw and a fixed jaw. A span defined between the movable jaw and the fixed jaw is adjustable. Each of the movable jaw and the fixed jaw includes an array of teeth defined by ridges that extend substantially parallel to each other. The array of teeth on each of the fixed jaw and the movable jaw includes a first set of teeth having a first width and a first depth, and a second set of teeth having a second width and a second depth. The first depth is less than the second depth and the first width is less than the second width.

Abstract: A hand tool includes a handle section, a working end operably coupled to the handle section, and a jaw assembly disposed at the working end. The jaw assembly includes a movable jaw and a fixed jaw. A span defined between the movable jaw and the fixed jaw is adjustable. Each of the movable jaw and the fixed jaw includes an array of teeth defined by ridges that extend substantially parallel to each other. The array of teeth on each of the fixed jaw and the movable jaw includes a first set of teeth having a first width and a first depth, and a second set of teeth having a second width and a second depth. The first depth is less than the second depth and the first width is less than the second width.

Abstract: A pliers has guiding surfaces at tooth portions of the first pliers body and tooth portions of the engaging unit of the control member. Therefore, when the pressing block of the control member is not pressed, even if the first pliers body is engaged with the tooth portions of the engaging unit, the second pliers body can still be pushed forward relative to the first pliers body, so that the second guiding surfaces of the second tooth portions of the engaging unit slide relative to the first guiding surfaces of the first tooth portions and each of the first tooth portions is moved to engage with a next corresponding second tooth portion, thereby allowing the second pliers portion being movable toward the first pliers portion. Hence, the clamping distance of the pliers can be adjusted to match with an object to be clamped.

Abstract: The invention relates to a pair of pliers (1) with two pliers legs (2, 3) crossing at a joint pin (4), one (3) of which legs is movable and the other (2) is fixed, and with a spring (13) between the fixed leg (2) and the joint pin (4) acting in such a way as to support interlocking engagement of the joint pin (4), wherein the pliers legs (2, 3) form gripping portions (5, 6) on one side of the joint pin (4) and a pliers mouth is formed on the other side of the joint pin (4), wherein furthermore the joint pin (4), through which a pivot axis (A) of the movable pliers leg at the same time extends, is adjustable in a longitudinal slot (9) of the fixed pliers leg (2), and wherein the movable pliers leg (3) can be optionally fixed in relation to the fixed pliers leg (2) by means of interlocking engagement between the joint pin (4) and the longitudinal slot (9) that takes place in the direction of a plane defined by the pliers legs (2, 3).

Abstract: A hand operated gripping tool includes a first jaw fixedly connected with a first jaw handle, a second jaw movable relative to the first jaw such that the first and second jaws cooperably define a variable size space therebetween for receiving a part to be gripped, a second jaw handle pivotally connected with the second jaw for moving the second jaw relative to the first jaw, a link system pivotally connected to the second jaw handle and having a guided portion selectively engageable with a plurality of guide portions provided on the first jaw handle. The guided portion being engageable with a first of the guide portions to define a first range of movement of the second jaw towards the first jaw and a second of the guide portions to define a second range of movement of the second jaw towards the first jaw.

Abstract: The present invention discloses pliers including first and second members having first and second jaw members, respectively, and a first handle and a second handle. The jaws have first and second workpiece engaging surfaces constructed and arranged to generally correspond to first and second surfaces of a standardized workpiece, such as a hexagonal nut. A pivot assembly is provided to interact between the first and second members, which includes a plurality of pivot retaining regions disposed on the first jaw member and a pivot structure disposed within the second member. The pivot structure is engageable at a selected one of the retaining regions to adjust a relative position of a pivot axis between the first and second members so as to adjust an extent of relative spacing between the first and second jaws of the pliers.

Abstract: A first member defines an aperture between the jaw and the handle that is defined by a first side wall and a second side wall where the first side wall, second side wall and handle may be integrally formed as a unitary piece. The jaws may also be formed integrally with the handle and side walls. The second member includes an elongated slot and a row of teeth. A pivot member extends along the axis of rotation and includes a tooth engageable with the row of teeth. The pivot member moves between a first position where the teeth are engaged and movement of the first jaw away from the second jaw is prevented and a second position where the teeth are disengaged and movement of the first jaw away from the second jaw is permitted.

Abstract: A combination tool that includes opposing jaws and handles that function as conventional pliers and wherein the handles are configured to be abutted with one another to form a spudding tool having a generally circular cross section and wherein at least one stud extending from one of the handles cooperatively seats within at least one hole in the opposing handle when the handles are abutted with one another.

Abstract: Pliers (1) operable with one hand have two plier legs (2, 3), which pivot in relation to one another about an engagement bolt (4) and overlap one another in a crossover region. The plier legs (2, 3) are connected by a control element (13) and a spring drive (12), which pretensions a mouth of the pliers into an open position. The control element (13) has two links (15, 16) that are connected to one another in the manner of a toggle lever by means of a toggle joint. A spring (14) pretensions the links (15, 16) into an extended position, wherein the spring (14) can be changed in its length. The engagement bolt is inserted into the pliers legs during a spreading of the pliers legs.

Abstract: A hand held tool includes a slotted handle having a jaw end, a medial section, and a gripping end, the medial section including a slot having a gear tooth rack. An operative handle has a pinion gear end and a gripping end, with pinion gear being fixed with respect to the operative handle, and the pinion gear being positioned in the slot and having a toothed portion and a non-toothed portion. An operative jaw is slidably mounted with respect to the slotted handle to cooperate with the jaw of the slotted handle to group a workpiece, the operative jaw having one or more guide mechanisms to maintain the orientation of the jaw with respect to the slot as the jaw slides and as torque is applied to the operative jaw when a workpiece is gripped.

Abstract: A tool includes a fixed operating lever and a pivoting operating lever that define handles that may be squeezed toward each other by a user to move the fixed and sliding jaws of the tool toward each other to grasp a workpiece. The fixed jaw is defined by the fixed lever. The sliding jaw is confined by the fixed operating lever. The position of the sliding jaw is limited by the operating levers, and its travel toward and away from the fixed jaw is defined by the operating levers. A biasing lever is operably connected to both operating levers. The biasing lever biases the jaws of the tool apart when there is no load applied to the tool and helps to transfer to the tool's jaws the force applied by a user to the tool's handles upon the engagement of a toothed pawl with a toothed surface of a slot within the fixed lever. The tool's jaws remain parallel to each other as they are moved toward or away from each other and while grasping a workpiece.

Abstract: A method and device is disclosed for clamping an object with quick adjusting pliers. A top jaw has a bottom handle, a slot, and a series of ridges located around the slot. A pin extends through the slot and includes an engagement element. A bottom jaw has a top handle and another opening for receiving the pin. The engagement element engages at least one of the series of ridges in a first position, wherein the top jaw and bottom jaw pivot about a first axis that extends through a longitudinal axis of the pin, and wherein the engagement element is moveable along the first axis from the first position to a second position wherein the engagement element does not engage any of the series of ridges.

Abstract: Gripping pliers consisting of a jointed clamp and handle. The clamp contains a longitudinal slot with longitudinal apertures defining first and second detent positions. In the first position, the joint is movable whereas in the second position, the joint is locked. The handle is rotatably mounted on a bearing ring which permits fine adjustment of the opening width of the pliers.

Abstract: An adjustable device for pliers includes an operation member movably extending through a through hole in the first part and a slot in the second part. The operation member includes an exterior smooth section and a toothed section which can be disengageably engaged with teeth defined in the slot to set the width between the two jaws. A spring is biased to the operation member and stopped by an end member which is connected to a positioning member mounted to the operation member. The operation member is pushed to disengage the toothed section from the teeth of the slot so that the two parts can be pivoted to adjust the two jaws to a desired width and the operation member is released which is pushed back by the spring to engage the toothed section of the operation member with the teeth of the slot.

Abstract: An adjustable pliers having first and second elongated members, each elongated member comprising a handle, a jaw, and a intermediate portion between the jaw and the handle. The intermediate portion of one of the elongated members includes an elongated slot, while the intermediate portion of the other elongated member includes a pivot pin that is slidingly captured in the elongated slot. A spring is captured in the elongated slot and engages the pivot pin so as to bias the jaw of one of the elongated members toward the jaw of the other elongated member. One of the handle members also includes a stop pin in its intermediate portion that abuts the intermediate portion of the other elongated member to limit the degree to which the elongated members can pivot with respect to each other about the pivot pin.

Abstract: A method and device is disclosed for clamping an object with quick adjusting pliers. A top jaw has a bottom handle, a slot, and a series of ridges located around the slot. A pin extends through the slot. A tongue element has a first opening for receiving the pin. A bottom jaw has a top handle and another opening for receiving the pin, wherein the tongue element engages one of the series of ridges, and wherein the top jaw and bottom jaw pivot about a first axis that extends though a longitudinal axis of the pin, and wherein the tongue element is moveable relative to the ridges to allow for engagement or disengagement with said ridges.

Abstract: A method and device is disclosed for clamping an object with quick adjusting pliers. A top jaw has a bottom handle, a slot, and a series of ridges located around the slot. A pin extends through the slot and includes an engagement element. A bottom jaw has a top handle and another opening for receiving the pin. The engagement element engages at least one of the series of ridges in a first position, wherein the top jaw and bottom jaw pivot about a first axis that extends though a longitudinal axis of the pin, and wherein the engagement element is moveable along the first axis from the first position to a second position wherein the engagement element does not engage any of the series of ridges.

Abstract: A method and device is disclosed for clamping an object with quick adjusting pliers. A top jaw has a bottom handle, a slot, and a series of ridges located around the slot. A pin extends through the slot and includes an engagement element. A bottom jaw has a top handle and another opening for receiving the pin. The engagement element engages at least one of the series of ridges in a first position, wherein the top jaw and bottom jaw pivot about a first axis that extends though a longitudinal axis of the pin, and wherein the engagement element is moveable along the first axis from the first position to a second position wherein the engagement element does not engage any of the series of ridges.

Abstract: Water pump pliers consisting of two pincer parts crossing themselves in a connecting region, each consisting of a handle portion and a jaw wherein said pincer parts are movably connected in said connecting region in such a way that said first pincer can be displaced relative to the second pincer to adjust a jaw opening-width on the one hand, and that the pincer parts with jaws can reciprocally pivot on the other hand. A blocking means is provided in such a manner that further shifting of the first pincer part is blocked when the jaws stop against a workpiece to be gripped. A spring element is installed between the pincer parts in such a way that a releasing force from the spring, operating in the opening direction of the jaws, acts upon the pincer parts.

Abstract: A pair of pliers mainly includes a first body part having predetermined length, thickness, and shape; a second body part having length, thickness, and shape adapted to work with that of the first body part; and a joint pivotally connecting the first and the second body part together at a predetermined position. The joint is movable within a defined range to enable quick adjustment of jaw opening of the pliers, and is locked in place once it is moved to a desired position.

Abstract: A pair of pliers mainly includes a first body part having predetermined length, thickness, and shape; a second body part having length, thickness, and shape adapted to work with that of the first body part; and a joint pivotally connecting the first and the second body part together at a predetermined position. The joint is movable within a defined range to enable quick adjustment of jaw opening of the pliers, and is locked in place once it is moved to a desired position.

Abstract: A method and device is disclosed for clamping an object with quick adjusting pliers. A top jaw has a bottom handle, a slot, and a series of ridges located around the slot. A pin extends through the slot and includes an engagement element. A bottom jaw has a top handle and another opening for receiving the pin. The engagement element engages at least one of the series of ridges in a first position, wherein the top jaw and bottom jaw pivot about a first axis that extends though a longitudinal axis of the pin, and wherein the engagement element is moveable along the first axis from the first position to a second position wherein the engagement element does not engage any of the series of ridges.

Abstract: A method and device is disclosed for clamping an object with quick adjusting pliers. A top jaw has a bottom handle, a slot, and a series of ridges located around the slot. A pin extends through the slot. A tongue element has a first opening for receiving the pin. A bottom jaw has a top handle and another opening for receiving the pin, wherein the tongue element engages one of the series of ridges, and wherein the top jaw and bottom jaw pivot about a first axis that extends though a longitudinal axis of the pin, and wherein the tongue element is moveable relative to the ridges to allow for engagement or disengagement with said ridges.

Abstract: An adjustable pair of pliers including two branches, and each branch has an articulation region located between a jaw portion and a handle portion. A first branch includes a guide surface 25, and an articulation surface 26, a front guide mechanism 11, and a front articulation mechanism 12. A rear guide mechanism 17, 43 is provided for guiding the second branch.

Abstract: A pair of pliers which is automatically and continuously self-adjusting. In the approach phase, a mobile branch (2) is guided by a cradle with two intermediate (4) and rear (32) supports.

Abstract: An arresting device is pivotally mounted between two handles of a pair of pliers. The arresting device comprises a sleeve and a rod fitted into the sleeve. The sleeve and the rod are pivotally fastened at one end with the two handles. The sleeve has a receiving cell, a retaining piece disposed in the receiving cell, and a spring disposed between the retaining piece and a side wall of the receiving cell. The retaining piece is urged by the spring to retain the rod. The receiving cell is provided with a pin pivoted thereto such that the pin is corresponding in location to the movable end of the retaining piece, and that the pin can push away the retaining piece from the rod. As the pin is turned such that a recess of the pin is corresponding in location to the retaining piece, the movable end of the retaining piece is in the free state, thereby enabling the retaining piece to be urged by the spring to retain the rod.

Abstract: Water pump pliers consisting of two pincer parts crossing themselves in a connecting region, each consisting of a handle portion and a jaw wherein said pincer parts are movably connected in said connecting region in such a way that said first pincer can be displaced relative to the second pincer to adjust a jaw opening-width on the one hand, and that the pincer parts with jaws can reciprocally pivot on the other hand. A blocking means is provided in such a manner that further shifting of the first pincer part is blocked when the jaws stop against a workpiece to be gripped. A spring element is installed between the pincer parts in such a way that a releasing force from the spring, operating in the opening direction of the jaws, acts upon the pincer parts.

Abstract: The spring mechanism (12) of a one-hand actuated pliers consists of a spring (14) supported on both handles (2, 3), which is designed in such a way that the handles (2, 3) are separated at a distance from each other by rotating the handle (3) and wherein the movable handle (3) of the pliers can be moved by the spring to the widest open position of the jaws by rotating said handle (3), wherein a rotation support of the spring (14) is configured on one side of the handle (2) and the spring (14) rests on said side against a rotational stop (19) formed on the handle (2) when it is not actuated. When the movable handle (3) of the pliers is displaced to a closing position of the jaws in which a workpiece is gasped, the spring (14) is released from the rotational stop only if force is exerted when the cheeks of the jaws (5, 6) are grasping the workpiece.

Abstract: A pair of water pump pliers, comprising two pincer parts crossing themselves in a connecting region, each consisting of a handle portion and a jaw, wherein the pincer parts are movably connected in the connecting region in such a manner that the first pincer can be displaced relative to the second pincer to adjust the jaw opening width. The pincer parts reciprocally pivot on the other hand, wherein a blocking mechanism is provided in such a manner that further shifting of the first pincer part is blocked when the jaws stop against a workpiece. Also, a spring element is installed between the handle is such a manner that a releasing force from the spring, operating in the jaws' opening direction, acts upon the pincer parts.

Abstract: The self-adjusting pliers have a male handle (6) and a female handle (11) with toothed jaws (10), (13), capable of sliding by means of a slip-joint or crimping pawl (14) that crimps them and slides in a window (8) with teeth (9), which is attached to one of the toothed jaws. Both handles (6), (11) are joined together by means of a rod (15) and an opening/closing spring (5) which joins the rod (15) to one of the handles (11). It has an additional spring (m) which is antagonistic to the opening/closing spring (5), attached to the crimping pawl (14) and lying against the surface (31) of the window (8) opposite the teeth (9) of this window (8).

Abstract: Self-adjusting pliers, consisting of a male handle (6) and a female handle (11) with toothed jaws (10), (13), capable of sliding by means of a slip-joint or crimping pawl (14) that crimps them and slides in a window (8) with teeth (9), which is attached to one of the toothed jaws. Both handles (6), (11) are joined together by means of a rod (15) and an opening/closing spring (5) which joins the rod (15) to one of the handles (11). It has an additional spring (m) which is antagonistic to the opening/closing spring (5), attached to the crimping pawl (14) and lying against the surface (31) of the window (8) opposite the teeth (9) of this window (8).

Abstract: The present invention comprises a number of innovations in the design of self-adjusting pliers. A self-adjusting pliers tool formed of laminated sheet metal construction is provided with separately fabricated cast steel jaws that provide improved strength and durability relative to laminated jaws. Techniques are also disclosed for casting the steel jaws and for treating them to achieve improved surface hardness and corrosion resistance. In certain embodiments, the jaw and the jaw end of the laminated handle are designed to interlock to prevent the jaw from sliding out of position. In certain other embodiments, a “self-energizing” feature is provided in which the shape and tooth configuration of the jaw, and the angle of the jaw end of the pliers, cooperate to keep the tool secured to a workpiece even after the upward squeezing force on the lower handle is released.

Abstract: Improved adjustable pliers, of the kind comprised of different bodies bearing the jaws of the mouth, and which pivot together on an axle-pivot, which moves in a groove, foreseen in one of the bodies, which has monodirectional teeth on one of its larger walls, mounting a catch, on said axle-pivot foreseen in the other body, which defines combined monodirectional teeth and an operating arm to release these teeth at the user's will. This catch has a spring, whose aim is to keep it in a fastened position, until the catch arm is activated.

Abstract: Self-adjusting pliers, consisting of a male handle member and a female handle member with toothed jaws, sliding against each other by means of a pawl which connects them and slides in an elongated racked slot inserted in one of the toothed jaws, both handle members being joined together by a coupling link consisting of two sleeves (1), (2) which move against each other telescopically, one of them (2) pivoting on the male handle member (6) and the other on the female handle member (11); one spring (3) connecting both sleeves (1), (2) and a second spring (5) connecting one (1) of the sleeves with one (11) of the handle members.Suitable for application in the manufacture of hand tools.

Abstract: A pipe wrench includes a first elongated member and a second elongated member. A first intermediate section of the first elongated member includes a recess defined in an inner side thereof that faces a second intermediate section of the second elongated member. A bottom wall that defines the recess has a ridge formed thereon. A first stepped portion and a second stepped portion are formed on two sides of the recess, respectively. A first pin and a second pin are respectively formed on the first stepped portion and the second stepped portion. The second intermediate section includes a number of parallel channels defined in an inner side thereof that faces the first intermediate section. The ridge is releasably engaged with one of the channels. A panel is mounted to an outer side of second intermediate section and includes two holes through which the first pin and the second pin are extended and riveted, respectively.

Abstract: A pliers is composed of a first long member and a second long member having a middle neck portion which is provided with a long slot. Pivoted to the first long member is a stopping member, which is located in the long slot and provided with a serrated portion engageable with teeth of the long slot. A first spring is fitted over a second support arm which forms an angle with a first support arm. A second spring is fastened at one end thereof with a grip end of the first long member, and at another end thereof with a grip end of the second long member. The first and the second long members are forced by the springs to open up completely in the absence of an external force exerting on the pliers.

Abstract: A pair of pliers includes a handle member having an intermediate portion slidably engaged in an intermediate portion of another handle member which has a rack located closer to the handle end. A pawl is pivotally secured on the handle member for engaging with the rack so as to secure the intermediate portions of the handle members together when the jaw ends are engaged with the workpiece. Two panels and a plate are pivotally mounted between the first and second handle members, and a torsion spring is mounted between the two panels to provide a reliable operation.

Abstract: A pair of pliers includes a handle member having an intermediate portion slidably engaged in an intermediate portion of another handle member which has a rack located close to the handle end. A pawl is pivotally secured on the handle member for engaging with the rack so as to secure the intermediate portions of the handle members together when the jaw ends are engaged with the workpiece. The intermediate portions of the handle members have no slots such that the strength of the handle members can be greatly increased.

Abstract: A plier tool for single-handed manipulation to automatically adjust the tool jaws to positions of positive gripping and holding of any size workpiece within the jaw range has major body members constructed from laminations, providing a tool capable of exerting a balanced force on a workpiece. The construction of the tool also lends itself to automated and relatively inexpensive production and enables the user to quickly replace springs necessary for the function of the tool without requiring complete tool disassembly.

Abstract: In a plier-type tool having the capability to automatically slidably adjust, in response to manual closing of its handle ends, to the size of any workpiece or other item to be gripped which is within the size range defined by the maximum opening between the tool jaws, certain structural and functional improvements are provided which are intended to simplify and reduce the costs of manufacturing of the tool and to enhance its appearance and performance.