Abstract: A pin assembly for securing a tool socket in place and for effecting quick release of the tool socket from a socket engagement tang or boss of a ratchet drive wrench. The mechanical structure is specially adapted for use in a ratchet drive wrench of the type in which the drive direction is conveniently changed by simply applying digital pressure to a pivotally-supported toggle element projecting upwardly of the head of the wrench. A wrench of the type referred to is described in K. K. Chow, U.S. Pat. No. 4,280,379.

Abstract: A lead frame finishing apparatus comprises a tool supporting base on which a plurality of lead frame finishing tools are provided. Two frames support a lead frame transfer unit which clamps the lead frames at their edges and has an adjustable. A linkage unit connects one of the frames to the tool supporting base and pivots the tool supporting base around a pin to correspond the effective width covered by the tools to the width between the two frames which support the lead frame transfer unit.

Abstract: In a screw driver with a turning tool placed at the front end of a shank which is torsionally connected with a handle, the turning tool can be reliably prevented from slipping off the head of the screw to be turned by the fact that the turning tool is embraced by a jaw chuck with at least two holding jaws in the form of spring arms of a shifter collar which can be moved in the axial direction on the shank, the spring arms being spreadable in the radial direction against their inherent elasticity by means of butting faces of the shank, and fixable against each other by means of a cooperating radial locking gear which can be released by butting faces of the shank. The shifter collar is fixable against the shank by means of a cooperating axial locking gear, and is connected with a control element which can be moved in the axial direction against the shank, has a limited relative movability against the shifter collar, and is provided with butting faces releasing the axial locking gear.

Abstract: A device at impact wrench, particularly for wheel nuts and wheel bolts and of the type which incorporates a shaft (2) with a handle (3) in one end and a socket in the opposite end (4), whereby the shaft between its ends is provided with a hub (6) about which is rotatably arranged an impact arm (8) which carries weights and is arranged to transfer impact movement to the shaft via stops (7) arranged at the hub, whereby in connection to the hub (6) is arranged members (7, 10) arranged to limit the ability of the impact arm (8) to transfer movement to the shaft (2) which carries the socket in one direction of movement of said impact arm.

Abstract: Apparatus for deburring or other surface treatment of workpieces has a tubular housing with a set of axially parallel flexible, elastic or rigid rod- or wire-like components which define gaps and whose end portions are separately affixed to driven rotary end walls. The end walls wobble in synchronism with one another so as to move the components longitudinally while the components orbit about the axis of the receptacle. The workpieces which are admitted into one end of the receptacle are agitated and rotated as a result of rotation of the receptacle and move toward the other end of the receptacle due to reciprocation of components in parallelism with the axis of the receptacle. One or more nozzles admit jets of flames, solid, liquid and/or gaseous media which penetrate through the gaps between the components of the receptacle and treat the workpieces.

Abstract: In a portable motorized screwdriver, in order to provide for manual use of the screwdriver, to finish screwing in a screw, for example, or to start unscrewing a screw, a mechanism is provided for locking the spindle. This mechanism is coupled to the switch used to start and stop rotation of the spindle. This coupling is arranged so that operation of the switch to start rotation of the spindle is accompanied by unlocking of the spindle and so that returning the switch to the position to stop rotation of the spindle locks the spindle. The locking mechanism is arranged so that when the spindle is locked the screwdriver may be used as a ratchet type manual screwdriver.

Abstract: A handle cap designed for use on a tool handle is disclosed. The handle cap has a cavity which forms an annular rim portion and an inner face. The annular rim portion of the cap is sleeved over an end of the tool handle so that the tool handle protrudes into the cavity and is abutted by the inner face of the cavity. The handle cap includes a tapered, projecting end portion extending outwardly in the direction of the longitudinal axis of the tool handle. The end portion has a channel formed therein which extends through the end portion and within which is fixed an elongated, permanent magnet. By using a handle cap which includes a projecting end portion as described, it is possible to use a longer and more powerful magnet than was possible in previous devices.

Abstract: A wrench comprises a lower jaw member which has a handle portion, and is provided with a lower grip teeth portion formed in its front end surface adjacent to which a longitudinal guide hole is formed therein; an upper jaw member which has a substantially reversed-L shape, and is provided with a leg portion inserted into the guide hole of the lower jaw member in a slidable manner, and has an upper grip teeth portion formed in a head portion thereof so as to be opposite to the lower grip teeth portion of the lower jaw member, and has a longitudinally elongated hole formed in the leg portion; a swingable pawl which is inserted into the elongated hole of the upper jaw member and supported by a supporting pin both ends of which are mounted on opposite walls of the guide hole of the lower jaw member, and engages with a side wall of the elongated hole of the upper jaw member in detachable manner; and a spring for urging the upper jaw member always to its gripping position.

Abstract: A strap wrench adapted to fit about an object having a connection to another object, so that the connection may be tightened or loosened, comprising a flexible strap having an end attached to a securing member and a free end which is received in a securing member which provides infinite adjustment of the periphery of the strap and retains the strap at a predetermined size determined by the circumference of the object to be turned, a wrenching member is pivotally connected to the securing member and the wrenching member has a shape defining a corner or projection for bearing on the strap and exerting a force thereon when the wrenching member is rotated by a turning tool inserted therein.

Abstract: An oil filter gripping tool including a looped band, the ends of which are connected to scissors levers through a pair of double pivot hinges. The hinges allow movement of the levers to tighten the band to contract to closely fit and grip the oil filter. With the band tightened about the oil filter, turning the levers causes rotation of the oil filter. The hinges also allow the levers to be laterally moved to avoid engine and vehicle parts.

Abstract: This invention presents a flexible power tool in which a flexible drive is utilized to permit the power supplying end to be angularly displaced from the work performing and during powered drive without inherent wobble, which is achieved first by pivotally connecting the power supplying end to the work performing end through a spring biasing device which resists the angular movement of the two ends during powered drive and second by utilizing a unique differential drive shaft in which the two pivoting differential axes are intersecting and coplanar, and the shaft is mounted in the tool in such manner that the coplanar axes can float into alignment with the pivotal axis between the ends of the tool.

Abstract: Ratchet wrench composed of a head having a ratchet system for controlling or locking the shank of the ratchet wrench. Connected to the head of the wrench through a neck is a cylinder structure. The cylinder structure includes circumferentially spaced longitudinal grooves and is connected to an arm by casing means. The arm has a central bore and a locking pin therethrough for locking or unlocking the arm to the cylinder. In the locked position, where the locking pin is engaged with a groove of the cylinder, the wrench can be used in a conventional manner. In the unlocked position, when the locking pin end is retracted from a groove the arm of the wrench is capable of being manipulated to rapidly rotate a bolt or a nut or to conveniently position the arm when a tight or close quarter area is encountered.

Abstract: A stud insertion and mounting device with a threaded bore formed axially through a tubular body. The bore has an open end and a closed end in which an abutting and locking means is positioned at the closed end to abut the stud for rotatably threading said stud into a suitably tapped receiving hole. A means for releasing the abutting and locking means from the mounted stud is provided, upon which when the device is rotated, the device is unthreaded from the mounted stud. The abutting and locking means may be a cylinder with a chamfered end or other shape. The device may be rotatably driven by a conventional pneumatic source or by hand through a conventional socket or open-ended wrench.

Abstract: A stud extractor for removing a stud embedded in a structure includes a shaft having an end portion adapted to be grasped by a tool and a body having a plurality of longitudinally-extending, convex camming surfaces and a pin having a plurality of rod portions positioned adjacent to the camming surfaces and joined by bridge elements to form a pocket for receiving the body of the shaft. The pin and shaft are inserted into a bore formed in a stud to be extracted and the shaft is rotated relative to the pin and stud. This causes the camming surfaces to jam the rod portions of the pin against the wall of the bore to prevent further relative rotation and cause the stud to rotate with the shaft. In a preferred embodiment, the pin includes an upper lip which prevents the pin from sliding completely into the bore of the stud.

Abstract: A method of producing a screened layer on an electrophotographic element by applying a homogeneous layer to a support and removing small areas from the layer by blasting it with particles having a diameter of between 5 and 1000 .mu.m.

Abstract: A hammer having a helve which includes a core attached at one end to a hammer head and a grip surrounding the core, the grip having a pair of axially extending passages therethrough, the passages being located in diametrically opposed relation to each other along a direction which is parallel to the striking direction of the hammer head. The axially extending passages absorb shock by allowing the grip to deform when the hammer head strikes an object which allows the user to maintain a tight grip of the hammer.

Abstract: A wrench construction wherein the wrench can be formed from an injection molded plastic material, and includes a handle and respective first and second head members extending from the ends of the handle. One of the head members is larger than the other, and each head member defines at least a part of a regular polygon adapted to be drivingly engageable and disengageable with a fastener element, such as a nut or bolt. Each of the head members and the handle is of generally U-shaped cross-section and includes a plurality of transverse stiffner members that extend from the base of the U and across the legs thereof to provide desired strength and rigidity of the structure at light weight.

Abstract: An improved screw holding and driving device having a sleeve positioned on a shank of a screwdriver in surrounding relation. The interior diameter of the sleeve being sized to permit slidable rotation of the sleeve with respect to the shank. The sleeve having a ball detent device for cooperating with a groove located on the screwdriver shank to hold the sleeve in a position on the shank where the sleeve does not extend beyond the screwdriver bit. The ball detent device when engaging the groove enables the sleeve to be held in the position where the sleeve will not be used to hold a screw and at the same time permit the sleeve to be freely rotatable on the shank of the screwdriver.

Abstract: An improved bottle opening machine for smoothly removing crown caps from bottle necks of empty bottles contained in bottle cases which are being conveyed on a conveyance system in a single file, in which the cap removing is carried out by the steps of engaging of cap removing sections on rotary discs with the crown caps on the bottle necks in an area where the circular movement path of the cap removing sections and the linear movement path of the bottle necks mutually converge in the tangential direction, removing of the crown caps from the bottle necks under the influence of a moment which is produced as the former is separated from the latter as the rotary discs are rotated, and releasing of the removed crown caps from the cap removing sections with the aid of cap releasing mechanisms. To ensure that the cap removing sections are positioned correctly with corresponding bottle necks, at least a synchronizing means is rotatably mounted on the frame structure.

Abstract: A clamp to secure the location of a spanner wrench on the bearing cup of a bicycle crank bearing during the installation or removal of the bearing cup from the bicycle frame crank housing.