A driving tool is providing, including: a driving end including three ribs which are angularly arranged in intervals, each of the three ribs being formed as a part of a rectangle and including two right angles, every adjacent two of the three ribs defining a groove therebetween.

A torque limiter for a surgical screwdriver that includes an outer sleeve (1); a snap sleeve (3), which is arranged in and rotates with the outer sleeve; a rolling element cage (6), which is arranged in the snap sleeve; an inner sleeve (10), which is arranged in the rolling element cage; and a force-transmitting shaft (11), which is received in and rotates with the inner sleeve. The inner wall of the outer sleeve is provided with recesses (8) that extend parallel to a rotational axis of the force-transmitting shaft. The rolling element cage is provided with a plurality of rolling element receiving areas (5), each of which holds a rolling element (4), and with a number of noses (7), which engage into the recesses. The inner sleeve is provided with a plurality of notches (9), which extend in a V-shape parallel to the axis and which receive the rolling elements.

A torque transmission driver has a first end portion adapted to receive and transmit torque from a torque generation source, and a second end portion including a shaped tapered bit having drive surfaces with an alternating series of five or six lobes and troughs about a rotational axis, having a taper angle between 15 and 65° from the rotational axis operable to engage corresponding drive surfaces in a plurality of at least two size fasteners, the tapered drive surfaces of the bit comprising a first tapered portion operable to engage drive surfaces of a first sized fastener and a second tapered portion operable to engage drive surfaces of a second sized fastener, the drive surfaces of the second sized fastener being larger than the drive surfaces of the first sized fastener. The taper angle may be nominally 52° from the rotational axis.

A tool is provided in order to facilitate utilization by users in a wide variety of applications. By way of example, a multipurpose tool may include first and second handles configured for relative movement between a closed position and an open position. At least the first handle includes an axle extending thereacross. The multipurpose tool also includes one or more tool members rotatably mounted upon the axle and foldable into the first handle and first and second jaws rotatably connected to the first and second handles, respectively. At least the first jaw defines an opening through which the axle of the first handle extends. The multipurpose tool further includes a resilient member disposed at least partially within the opening in order to apply a bias force to the first jaw during rotation of the first jaw relative to the first handle.

A hand tool system comprises a first driver, a second driver, and a driver adapter. The first driver and the second driver each comprises a driver handle having an external configuration and a driver component secured to the driver handle. The driver adapter is selectively fittable over the driver handles of the first and second drivers. The driver adapter comprises an elongate body, a first socket formed in a first end of the elongate body, a second socket formed in a second end of the elongate body, and a plurality of through holes formed through and distributed longitudinally along a length of the elongate body. Each socket has an internal configuration sized and shaped to receive a driver handle of either the first or second driver and to transfer torque to the driver upon rotation of the driver adapter.

An Allen™-key style wrench that has tips at the working ends of the wrench that are composed of a different material than the body of the wrench. The body include internally-threaded bores at each end, mated to the external threads of bits providing the tips.

Various embodiments described herein provide a fastener system having straight walled driving surfaces that provides a reliable stick fit feature, while also improving stability of engagement between the system components. A feature of the new system is to allow stick fit engagement of existing standard straight walled drivers in the new system.

A screw bit body which allows for efficient torque force application onto a socket fastener. The screw bit body includes a plurality of laterally-bracing sidewalls, a first base, and a second base. The laterally-bracing sidewalls are radially distributed about a rotation axis of the screw bit body with each further including a first lateral edge, a second lateral edge, a bracing surface, and an engagement cavity. The engagement cavity creates an additional gripping point to prevent slippage in between the screw bit body and the socket fastener. The engagement cavity traverses normal and into the bracing surface. Additionally, the engagement cavity traverses into the screw bit body from the first base to the second base. The engagement cavity is specifically positioned offset from the first lateral edge by a first distance.

The multi-tool wrench is a single tool that provides multiple tools useful by a craftsman. The multi-tool wrench comprises a first tool half and a second tool half that are removably coupled by a quick disconnect. The halves may be decoupled for use in confined spaces or to simultaneously use tools from each half. The first tool half provides an adjustable wrench and two pivoting hex keys. The adjustable wrench has a reversible lower jaw to convert the wrench into a pipe wrench. The second tool half provides a set of three open end wrenches, a pivoting flat blade screwdriver, and a pivoting cross head screwdriver. The open end wrenches and hex keys may be sized to provide common tools needed in a specific occupation or field. As a non-limiting example, the tools may be common sizes used by a welder.

A hex headed bit and socket for enhanced non-slip application of torque force having a hex head with fastener engagement surfaces. The fastener engagement surfaces extends in angular longitudinal inclination. Recessed areas on flat hexagonal free end tool portion defining alternate spaced right-angle pairs of parallel engagement edges correspondingly embed themselves during rotational engagement within the so engaged fastener pulling the hex head bit into the engaged fastener imparting enhanced translateral points of tool engagement for extraction.