Abstract: A hand operated gripping tool includes a first jaw unit having a first work piece engaging portion, a support member extending generally transversely with respect to the first jaw unit, a first handle at the second end of the support member, a second jaw unit having a second work piece engaging portion, and a second handle having an end portion pivotally attached at the second jaw unit. A guiding device is disposed at the end portion of the second handle. The guiding device has an engaging element and a biasing element, and the engaging element is biased or urged toward and into engagement with the second reaction surface by the biasing element. The engaging element engages the second reaction surface as the second jaw unit moves along the support member to adjust the size of the work piece receiving space.

Abstract: The present invention discloses a pair of retractable pliers, comprising a jaw body and a handle body. The jaw body comprises a first jaw part (A1) and a second jaw part (A2) which are articulated together via an articulated shaft (A3). The handle body comprises a first internal housing and a second internal housing. The first jaw part and the second jaw part each have a pliers head and a connection part (1, 1?), and the connection parts of the first jaw part and the second jaw part are slidably connected to the first internal housing (B1) and the second internal housing (B2) respectively. The pair of retractable pliers also comprises a locking structure which is arranged on the connection parts of the first jaw part and the second jaw part and which is capable of fixing the connection parts of the first jaw part and the second jaw part together. Once the locking structure is open, the pliers heads can open automatically for convenience of use.

Abstract: A lace tightening apparatus including a handle and a gripping platform. The gripping platform is adapted to travel up into the interior of the handle upon a compression force being applied thereto. An anvil is rigidly attached to the handle projecting downward from the underside. One or more springs are disposed within the interior, with the first end of the spring anchored to the handle within the interior and the second end connected to the gripping portion. A stylus is attached to the gripping portion having a post and an L-shaped portion including a lip. The lip is exposed outside of the anvil and projects downward away from the anvil. Therefore, when the compression force is applied to the gripping platform, the lip travels upward toward the bottom surface of the anvil such that a lace can be pinched between the lip and the bottom surface.

Abstract: A hand operated gripping tool includes a movable jaw, a fixed jaw, a first cam associated with the movable jaw, a pivotal handle connected with the movable jaw and a second cam associated with the pivotal handle. The first cam is spaced from the fixed jaw by a first variable distance, and the second cam is spaced from the fixed jaw by a second variable distance, with the first distance maintained greater than the second distance. The jaws are cooperable to define a variable size space for receiving a workpiece and the cams are operable to cause the jaws to grip the workpiece positioned in the variable size space. The cams are arranged such that rotational movement of the second cam caused by operation of the pivotal handle causes the movable jaw to pivot on the first cam to grip the workpiece that is positioned in the variable size space.

Abstract: A hand operated gripping tool comprises a first jaw unit having a workpiece engaging portion, a second jaw unit having a workpiece engaging portion and being movable relative to the first jaw unit such that a variable size workpiece receiving space is defined between the workpiece engaging portions and a handle for applying a force to the second jaw unit. The second jaw unit is engagable with a reaction surface such that, in use, in response to a force applied by the handle, the workpiece engaging portion is forced against a workpiece received in the workpiece receiving space. An elongate extension portion extends from the workpiece engaging portion. The lever arm is connected with the elongate extension portion and the extension portion has a bend promoting portion disposed between the workpiece engaging portion and the lever arm connection that is configured to promote bending of the extension portion.

Abstract: The application relates to a pair of pliers (1). More specifically the application describes a pair of single-handed automatically self-adjusting water-pump pliers for clamping or gripping a workpiece. The pair of pliers comprises a first and a second handle (2,3), each handle comprising a jaw portion (8,9), a neck portion (6,7) and a handle portion (4,5), a spacing means (10) between the handle portions (4,5) for adjusting the opening width of the jaw portion (8,9); and the two handles (2,3) are pivotably and slidably connected to each other by means of releasable locking means (13).

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: A pliers has specifically configured elongate jaws of about rectilinear construction with multiple position adjustability to variously operatively engage a plurality of slack adjustment services of diverse commercial air brakes to check the slack.

Abstract: An adjustable plier device includes a handle having a stationary jaw member and a number of teeth extended into a groove of the handle, a movable jaw member slidably attached to the handle and having a curved recess for pivotally engaging with a follower which includes a toothed pawl for engaging with the teeth of the handle and having a curved depression for pivotally engaging with one end of a lever, and an actuating member pivotally coupled to the handle and the lever for actuating the lever to quickly force the movable jaw member to grasp the work piece, and to force the toothed pawl to engage with the teeth of the handle and to retain the work piece between the jaw members.

Abstract: An interengaged multiple-grip set of pliers includes an interengaging arm, an interengaged arm, and an articulation joint. One arm includes an elongated opening which is provided with a first engagement means having a pitch p, and the joint is arranged on the other arm and has a second engagement means. The joint is axially movable between a first position blocking any translation between the arms, and a second axial position allowing translation. The first engagement means and the second engagement means are arranged such that, starting from a first engagement position between the first engagement means and second engagement means, the joint is axially movable beyond the second axial position as far as a third axial position, and can then be moved in rotation about the axis thereof in order to bring the first and second engagement means into engagement in a second engagement position.

Abstract: A hand operated gripping tool includes a first jaw, a second jaw, a first cam associated with said first jaw, a pivotal handle associated with said first jaw and a second cam associated with said pivotal handle, said first and second jaws being cooperable to define a variable size space for receiving a workpiece and said first and second cams being operable to cause said first and second jaws to grip a said workpiece that is positioned in said variable size space.

Abstract: A pliers has specifically configured elongate jaws of about rectilinear construction with multiple position adjustability to variously operatively engage a plurality of slack adjustment services of diverse commercial air brakes to check the slack.

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: Tongue and groove pliers include a first member having a slot, and a second member connected to the first member by a pin in the slot. The first member has a plurality of arcuate ribs defining open ended grooves on the side adjacent to the second member. The second member has a tongue on the side facing the first member. The tongue fits in a selected groove to adjust the spacing between opposing jaws on the respective first and second members. The pliers have at least one visual alignment feature to align the tongue with a desired groove. The alignment feature can be readily visible marks indicating locations of the tongue and/or grooves.

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: Self adjusting grooved pliers include a first section having a jaw portion and a channel formed therethrough, adjacent the jaw portion and a second section having a jaw portion and a pivot extending therefrom. The pivot is slidably received in the channel to allow wider or narrower association between the jaw portion of the first section and the jaw portion of the second section. The pivot pivotally couples the first section to the second section for movement between an open position and a gripping position. A plurality of grooves is formed in the first section and a tongue extends from the second section. The tongue is received in one of the plurality of grooves, locking the pivot in position within the channel only upon the first section and the second section reaching the gripping position. A biasing assembly acts on the pivot, urging the pivot upward in the channel toward the jaw portion of the first section.

Abstract: A self-adjusting pliers is operable to grasp a workpiece between an upper jaw and a lower jaw. The pliers includes an upper arm having a first end and a second end, with the upper jaw at the first end. A jaw arm has a first end and a second end. The second end of the jaw arm is pivotably connected to the upper arm at a main pivot adjacent to the second end of the upper arm, so that the first end of the jaw arm is movable in a circular arc relative to the main pivot. The lower jaw is at the first end of the jaw arm in movable facing relation to the upper jaw so that the workpiece may be grasped between the upper jaw and the lower jaw. An engagement mechanism releasably engages the jaw arm to the upper arm at an engagement position responsive to a movement of the jaw arm relative to the upper arm and responsive to a size of the workpiece grasped between the upper jaw and the lower jaw, to thereby prevent rotation of the jaw arm relative to the upper arm.

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: Slip-joint pliers of the present invention comprise, in one embodiment, a pair of compound handles pivotally attached to jaw means being upper and lower jaw members having a manually adjustable slip-joint therein for providing at least two different maximum jaw opening positions, each having a different separation angle. The jaw openings are selectable by movement of a lever, for example, attached to a keyed pivot pin in the slip-joint. The jaw openings are selectable with minimal movement of the compound handles as a result of spring biasing between the jaw members and abutting engagement with the compound handles.

Abstract: Self-adjusting pliers including first and second members each handle portions and jaw portions. The first member defines a rack having a plurality of teeth. A rack engagement structure is mounted to an intermediate portion of the second member and positioned adjacent the rack. During initial manual movement of the handle portions towards one another, the rack engagement structure travels in disengaged, spaced relation with respect to the rack. Then, after the jaw portions engage opposing sides of a workpiece, continued movement of the handle portions towards one another causes movement of the rack engagement structure toward the rack until the rack engagement structure engages the rack. The rack engagement structure has a movement restrictive portion being cooperable with the rack so as to limit the movement of the rack engagement structure toward the rack when the jaw portions contact one another in the absence of a workpiece therebetween.

Abstract: An auto-adjusting plier includes a first elongate member having a fixed jaw at one end, first elongate handle at the other end and a first neck portion. A second elongate handle has one end pivotally connected on the fixed jaw for pivotal movements. A second elongate member has a movable jaw at one end arranged in substantial opposition to the fixed jaw and another end mounted on the second elongate handle. An elongate link has one end pivotally mounted on a second neck portion of the second elongate member and the other end mounted for both pivotal and linear movements on the first elongate handle. Slots or channels are provided on the first neck portion for selectively guiding a stop pin mounted on the second neck portion and for selectively guiding the other end of the link generally linearly along a first predetermined length of the first handle. A third guide slot selectively guides the other end of the second elongate member generally linearly along a second predetermined length of said second handle.

Abstract: A pincers including a fixed component, a movable component and a locating mechanism. The fixed component is formed with an elliptic moving recess. A moving member is synchronously moved when a pushing rod of the movable component moves within a slide slot formed in the moving recess. The locating mechanism serves to restrict the moving of the moving member and restrict the moving of the pushing rod so as to fix the distance between the fixed jaw and movable jaw and pitchlessly adjust the pincers.

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 first member and a second member. The first member has a first handle portion, a first jaw portion, and a convex bearing surface portion disposed between the first handle portion and the first jaw portion. The second member has a second handle portion, a second jaw portion and a concave bearing surface portion disposed between the second handle portion and the second jaw portion. The concave bearing surface portion engaging the convex bearing surface portion of the first member to provide a fulcrum point between the first member and the second member. The fulcrum point shifts with relative spacial positioning of the first jaw portion and the second jaw portion.

Abstract: A slip-joint pliers has crossed pivoting levers joined at pivot portions thereof by a flat-sided bolt extending through openings in the levers and engaged with a nut, one of the openings being elongated and generally dumbbell-shaped to accommodate the slip-joint movement. The pivot portions of the levers have flat facing inner surfaces, in each of which is formed a single-level spring recess surrounding the associated opening, each recess having a peripheral side wall and a flat planar bottom wall extending from the side wall to the associated opening. A helical torsion spring is seated in the recesses and encircles the bolt and has tangent ends respectively engageable with straight bearing portions of the recesses.

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: An oil filter wrench dimensioned and constructed in a fashion which will accommodate a broad range of sizes of cylindrical oil filters. The handles and jaws of the oil filter wrench are substantially identical. One of the jaws, however, has a pin and the other jaw has a pair of openings to define first and second pivot axes for the pliers.

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: Utility pliers for single-handed manipulation, capable of automatically adjusting the distance between gripping jaws in relation to the size of the workpiece to be gripped, and utilizing one or more hidden springs to cause the automatic adjustment function. Alternative embodiments enable reduction of manufacturing costs, improved location of certain operative components, and the selective inclusion of additional features which enhance the use and operation.

Abstract: Gripping pliers with an attached grooved slip joint, with a slot provided in one plier leg and intended for receiving with variable positioning the hinge bolt located in the other leg, in which the grooves, notches or the like safeguarding the setting of the pliers are provided in a strip arranged laterally next to the slot on the sliding surface of the first plier leg, and the other plier leg has on its sliding surface stops interacting with this strip and limiting the closing and opening of the pliers.

Abstract: A hose coupling wrench apparatus includes first and second movable wrench members, each having a handle and an arcuate arm attached thereto. The arcuate arms of each wrench member have arcuate slots therein, and each has a hose coupling engaging portion on each end of each arcuate arm. A slider member connects the two arcuate wrench portions together in a predetermined spaced relationship to each other to allow the wrench portions to slide one relative to the other. The slider member has a pair of curved sliding blocks on each end thereof, with each block sliding in the slot of one wrench portion and supported on one side of the arm by the slider member and on the other by fastening members. The hose coupling wrench can engage hose coupling sections with each movable wrench member. One wrench member can be moved relative to the other to couple or uncouple a hose coupling.

Abstract: Utility pliers for single-handed manual manipulation which will automatically adjust to positions of positive gripping and holding of any size workpiece within the size range defined by the maximum opening between the jaws of the pliers.

Abstract: In a preferred embodiment, slip joint pliers have a push-button which moves transversely through the adjacent bodies of the pivot portions of the pliers members, to release intermittently one of the plier members to permit a pivot element to slide from one pivot position to an alternate pivot position in the other remaining pliers member, by moving axially an enlarged portion of the pivot element to allow the movement to the alternate pivot position before returning the enlaged portion to the normal pivot location.