Abstract: A pipe wrench assembly includes a pair of pipe grips. A handle has a front end and a rear end. A housing is attached to the front end of the handle and is attached to each of the pipe grips adjacent to the second ends such that one of the pipe grips includes a receiving opening facing in a first direction and another of the pipe grips includes a receiving opening facing in a second direction. A ratchet drive is mounted in the housing and is mechanically coupled to each of the pipe grips such that the housing is rotatable with respect to the pipe grips. The pipe grips are movable in a ratcheting movement opposite of each other.

Abstract: An adjustable wrench includes two plates, a handle unit, a rotary unit and a control unit. Each plate has a first toothed portion. The handle unit is located between the two plates and includes a handle and a toothed ring. The handle has a second toothed portion. The toothed ring has multiple third teeth and multiple fourth teeth. The third teeth are engaged with the second teeth. The fourth teeth are located between the first toothed portions of the two plates. The rotary unit is located between the two plates and has a first jaw and a second jaw. The control unit includes having a controlling member and a resilient member. The controlling member is connected to the plate and has fifth teeth defined in one end thereof. The resilient member contacts the controlling member to engage the fifth teeth with the first and fourth teeth.

Abstract: An adjustable wrench includes two plates, a handle unit, a rotary unit and a control unit. Each plate has a first toothed portion. The handle unit is located between the two plates and includes a handle and a toothed ring. The handle has a second toothed portion. The toothed ring has multiple third teeth and multiple fourth teeth. The third teeth are engaged with the second teeth. The fourth teeth are located between the first toothed portions of the two plates. The rotary unit is located between the two plates and has a first jaw and a second jaw. The control unit includes having a controlling member and a resilient member. The controlling member is connected to the plate and has fifth teeth defined in one end thereof. The resilient member contacts the controlling member to engage the fifth teeth with the first and fourth teeth.

Abstract: A safety pipe wrench includes a Y-shaped handle having a stem extending from a first end of the handle towards a second end of the handle. The stem bifurcates into a first arm and a second arm at a location between the first end and the second end of the handle. The first arm and the second arm extend to the second end of the handle. A slot is defined between the first arm and the second arm. A first gripping insert is mounted on the first arm. A nut is rotatably retained in the slot. A jaw has a shank terminating in a jaw head. The shank is movably engaged with the nut. A second gripping insert is mounted on the jaw head.

Abstract: A safety pipe wrench includes a Y-shaped handle having a stem extending from a first end of the handle towards a second end of the handle. The stem bifurcates into a first arm and a second arm at a location between the first end and the second end of the handle. The first arm and the second arm extend to the second end of the handle. A slot is defined between the first arm and the second arm. A first gripping insert is mounted on the first arm. A nut is rotatably retained in the slot. A jaw has a shank terminating in a jaw head. The shank is movably engaged with the nut. A second gripping insert is mounted on the jaw head.

Abstract: A monkey wrench includes a handle, a head, stationary jaw, a movable jaw and a jaw-moving element. The head is formed at an end of the handle and made with a side, a groove in the side and an opening in communication with the groove. The stationary jaw is formed on the head and made with a first nut-contacting face, a second nut-contacting face next to the first nut-contacting face, a bulge on the first nut-contacting face and a recess next to the bulge. The movable jaw is movably disposed in the groove and formed with a nut-contacting face and a bulge on the nut-contacting face thereof. The jaw-moving element is disposed in the opening and engaged with the movable jaw so that the jaw-moving element is operable to move the movable jaw relative to the stationary jaw.

Abstract: A wrench includes a wrench head mounted on an end of a handle. A handle of the wrench includes a fixed portion and a rotatable portion. Rotation of the rotatable portion of the handle causes movement of at least one contact surface of the wrench head. In one embodiment, rotation of the rotatable portion provides adjustment or movement of one of the jaws of the wrench head relative to another jaw of the wrench head. In another embodiment, rotation of the rotatable portion provides rotation of the wrench head. The rotatable portion of the handle is slidably mounted within the fixed portion of the handle, such that rotatable portion can be selectively extended to provide additional leverage on the wrench.

Abstract: The specification discloses a modified nut assembly and locking assembly for locking the shank of a wrench in place. The nut assembly preferably includes a nut for engaging and disengaging the shank of the wrench and a spring for biasing the nut to a position where the shank of the wrench is locked in place. Threads internal to the nut matingly engage threads on the shank of the wrench when in a locked position, and grooves internal to the nut allow the shank of the wrench to slide freely through the nut when in an unlocked position. The locking assembly preferably includes a housing, a sliding portion, a locking portion, and a spring. The sliding portion and locking portion preferably abut each other within the housing. The spring is preferably located in the sliding portion and extends from the sliding portion to the shank of the wrench.

Abstract: A crescent wrench is constructed to include a fixed jaw, a transmission gear wheel pivoted to the fixed jaw, a movable jaw meshed with the transmission gear wheel, a sliding track structure adapted to guide movement of the movable jaw horizontally relative to the fixed jaw, and a handle detachably coupled to the transmission gear wheel and adapted for turning the transmission gear wheel to move the movable jaw horizontally relative to the fixed jaw.

Abstract: An improved structure of a pair of pipe pliers with an auxiliary pressurizing mechanism, to drive both of a movable jaw at the inner side of a curved, movable block provided with a toothed section and a fixed jaw at the output of a handle to execute firmly holding a work object by pressurizing in opposite direction characterized by that the auxiliary pressurizing mechanism includes an additional auxiliary handle, or alternatively, a lateral adjusting screw structure to achieve the function by pressurizing to hold the work object.

Abstract: The tools (wrenches) of this invention provide a one color instant identification of color coded tools. Preferably, the tools have a portion of their outer surface colored. Typically, the color impregnates the metal or plating during the manufacturing process. Another embodiment is a colored applique, band or sleeve on the outer surface of the tools. The key of this coloring is to identify the tool quickly by coloring a large area of the tool. This provides for quick identification of the tool even if the numerical designations are illegible because of small sizing or dirt obliteration. In a preferred embodiment, virtually the entire tool is colored during manufacturing. In another preferred embodiment, large raised numbers combine with the overall color scheme to make the tools quickly identifiable. Dirting the large colored surface is very unlikely as is obliterating the large raised fractional numbers.

Abstract: The specification discloses a modified nut assembly and locking assembly for locking the shank of a wrench in place. The nut assembly preferably includes a nut for engaging and disengaging the shank of the wrench and a spring for biasing the nut to a position where the shank of the wrench is locked in place. Threads internal to the nut matingly engage threads on the shank of the wrench when in a locked position, and grooves internal to the nut allow the shank of the wrench to slide freely through the nut when in an unlocked position. The locking assembly preferably includes a housing, a sliding portion, a locking portion, and a spring. The sliding portion and locking portion preferably abut each other within the housing. The spring is preferably located in the sliding portion and extends from the sliding portion to the shank of the wrench.

Abstract: A slide switch adjustable wrench uses a laminated steel construction method that includes a stepped surface to form a guide for the worm gear driven moving jaw. A molded or similarly formed body is sandwiched between the steel housing sides to form a sturdy structure. The body provides cavities, bearings and other features to support and guide moving parts within. A rack and pinion drive system uses simple molded gears to amplify about 2 inches of switch travel into about 6 turns of the worm gear. An overmolded rubber edge grip bonds to the body to create a recess in the body; this recess seamlessly fits the steel sides to form a smooth continuously contoured grip surface.

Abstract: An improved structure of a pair of pipe pliers with an auxiliary pressurizing mechanism, to drive both of a movable jaw at the inner side of a curved, movable block provided with a toothed section and a fixed jaw at the output of a handle to execute firmly holding a work object by pressurizing in opposite direction characterized by that the auxiliary pressurizing mechanism includes an additional auxiliary handle, or alternatively, a lateral adjusting screw structure to achieve the function by pressurizing to hold the work object.

Abstract: Pipe wrench with two shanks (14,15) each with a toothed jaw (11,12) at an angle to the shank, the shanks, connected at joint (13) and one shank translatable relative to the joint to adjust the distance between the jaws, with the tooth tips on each jaw located in a plane, and the height and pitch distance between teeth monotonously increasing from a small value for teeth (41,42) nearest to the shank up to a larger value for teeth (31,32) farthest from the shank, the increase being at least 25%.

Abstract: A wrench tool suitable for use by firefighting personnel. The tool has an elongated handle, and a spanner part at a first end of the handle. The spanner part has a projecting claw for operatively engaging a pin on the circumference of a pipe or a hose coupling ring to be rotated by the tool. A wrench part, at a second end of the tool handle opposite the first end, has jaws arranged for adjustable relative movement to grip an object to be turned by the tool. The range of movement of the jaws includes a position at which the jaws are set to receive and safely grip an outside levering tool for producing increased leverage when operating the spanner part of the tool.

Abstract: A wrench includes a tubular extension secured in the second jaw member by set screws. The tubular extension is connected on one side by the adjusting handle and is connected to the bored gear on the second side. When the handle is rotated, the internally threaded gear drives first jaw portion in and out and is also exposed for conventional hand adjustment.

Abstract: An adjustable spanner having a releasable engagement securing mechanism is provided. The spanner comprises a spanner handle, a first holding portion, a second holding portion, a third holding portion, an adjustment member, a push rod, and at least one resilient element. Each of the first, second, and third holding portions defines respective contact surfaces. The first holding portion is fixedly coupled to one end of the spanner handle, while the second holding portion is displaceably coupled to the spanner handle. The third holding portion is displaceably coupled at the given end of the spanner handle. An adjustable U-shaped region is collectively formed by the three contact surfaces. A push rod disposed in displaceable manner within the spanner handle is coupled to the third holding portion for actuating the displacement thereof between a clamping position and a releasing position. The push rod is provided with an actuation button by which it may be displaced relative to the spanner handle.

Abstract: An adjustable wrench utilizes a drive member housed in a wrench body. The drive member has a cylindrical drive element having external male threads formed thereon, onto which a guide block is mounted by means of a bore, within which female threads, complementary to the male threads, are formed extending longitudinally through the guide block, so that the drive element extends through the bore with the male and female threads in engagement with one another, whereby rotation of the drive element is operable to move the guide block longitudinally along the drive element. A drive knob is fixed to and manually operable for selectively rotating the drive element. A pair of alignment arms connect a movable jaw element to the guide block so that the movable jaw element faces and is displaced from the drive block in longitudinal alignment with the bore and is separated from the drive knob by the drive block.

Abstract: A wrench includes a fixed jaw (16) at one end of a handle (15) and a pivoted jaw (19) joined to the handle by a pivot (20) disposed in a plane (30). A spring (25) urges the pivoted jaw through a gripping position in which flat gripping surfaces (17, 18) are parallel and separated by a distance which equals the size of the bolthead or nut to be turned. The plane (30) extends through the proximal edges of the surfaces (17, 18) which are flat from the plane to the distal edges of the jaws, and perpendicular to the plane. An auxiliary lever (45) assists in ratcheting. The wrenches may be single ended, double ended, or adjustable, in which case, an integral pivot bar (50) slides within the wrench handle perpendicular to the gripping surfaces (17, 18). A plurality of springs (25b, 25c) may be used.

Abstract: The invention is an adjustable ratchet-style self-tightening wrench. The a wrench having a main body or handle, including a fixed jaw and a moveable jaw assembly which is pivotably attached to the main body. The handle has a first and a second end. The first end is for holding the wrench and applying force. The second end of the handle is shaped to form a fixed jaw having a substantially planar work surface. The handle also includes a recess near the fixed jaw end of the wrench with two leaf springs that are positioned to be biased against a pivot lug attached to the carriage block. The moveable jaw assembly includes a moveable jaw member, a traveler carriage block and a traveler carriage nut. The moveable jaw member has a traveler carriage segment at one end and a jaw working surface at it's other end. The moveable jaw assembly is pivotably attached to the main handle via a pivot lug that protrudes from the carriage block into the main handle recess.

Abstract: A plastic wrenching tool wherein the axes of the fixed and movable members are maintained substantially coincident, and rotation or displacement therebetween minimized by the provision of grooves and projections on the fixed and movable members respectively. At least the outer convex portion of the tool is made of resin. The resin material used is fibrous glass reinforced plastic which may be used for the entire tool. Specifically a fibrous glass reinforced nylon resin is used as the material of the tool. Alternatively, a matallic material may be used in a part or parts of the tool, such as in the outer concave surface portion, the inner portion of the tool, or the concave portion of the outer surface of the tool and the inner portion of the tool.

Abstract: A wrench that combines the narrow profile of an Open End with the adjustability of a large in profile Adjustable wrench and that meets the "Wrench Clearances for Open End Engineers Wrench 15.degree.", (from SAE Aeronautical Drafting Manual). The turnbuckle principle linked to wedge pins that move through crossing slots provide for parallel movement of two slidably connected wrench-halves. Actuation mechanism is shifted from the standard head location to the intermediate portion of the handle and the ends of the wrench are designed for turning two consecutive size ranges.

Abstract: An adjustable wrench having a fixed jaw and a spring biased movable jaw. A coil spring acts on an end of a worm gear opposite the fixed jaw, which, in turn, acts on a rack of teeth provided on a portion of the movable jaw to force the movable jaw towards the fixed jaw. The worm gear is rotated to advance the movable jaw against an object which is to be gripped. Upon contact of both the movable jaw and the fixed jaw with the object, the worm gear is rotated further to compress the coil spring. The force of the coil spring against the worm gear diminishes looseness between the worm gear and the movable jaw, and compression of the coil spring further diminishes any such looseness and enhances holding power of the wrench about the object.

Abstract: A tool having a gripping mechanism engageable with separate parts of the upper end of a valve box assembly to transfer rotational force to the box assembly to adjust the height thereof. The tool has an upright body connected to a cross handle at its upper end and the gripping mechanism at its lower end. The gripping mechanism has a plurality of adjustable heads located along cord lines with respect to the axis of rotation of the tool. Each head has an edge which moves into driving contact with a separate part of the box assembly when the gripping mechanism is rotated.

Abstract: On a conventional pipe wrench, an L-shaped lever arm has the short bisected arm segment cooperatively disposed over and secured by a fixed pivot to a linear extention of the threaded section of the adjustable pipe jaw. A free pivot disposed at the terminus of the bisected arm secures a roller between and in the short bisected arm segment. The L-shaped lever arm and pivoted roller are adaptively sized and shaped to provide a lock means for the pipe jaw when the lever handle is pressed down against the pipe wrench handle, locking the roller against the wrench handle by compressing the roller in detent against the wrench handle.