Abstract: Rock drilling machine (10) comprising a piston that is arranged to move back and forth in a chamber (12a, 12b) when the rock drilling machine (10) is in use, a cavitation-sensitive component (14), and an oil channel that is arranged to extend between the chamber (12a, 12b) and said cavitation-sensitive component (14). The oil channel comprises a series of restrictions (18) and oil volumes (20) to hinder the movement of cavitation bubbles through said oil channel.

Abstract: A method and machine for packaging smoking articles or other tobacco industry products in which the products and packaging may be transported from selected product supply systems and packaging material supply systems selectively along a plurality of alternative transport routes through the machine through a series of workstations arranged to incorporate batches of smoking products selectively in different packaging materials according to the transport route selected.

Abstract: A gas spring-powered fastener driver including a cylinder, a moveable piston positioned within the cylinder, a driver blade attached to the piston and movable therewith between a ready position and a driven position, a lifter operable to move the driver blade from the driven position to the ready position, a transmission for providing torque to the lifter, a first clutch mechanism permitting a transfer of torque to an output shaft of the transmission in a single rotational direction, and a second clutch mechanism limiting an amount of torque transferred to the transmission output shaft and the lifter.

Abstract: A surgical stapling device includes a housing and a plurality of cartridges that are coupled together to form a barrel that is rotatably supported within the housing. Each of the cartridges defines a plurality of staple pockets, each supporting a staple. An anvil is coupled to the housing and is movable in relation to the barrel between an open position and a clamped position. A guide shaft extends through the housing and through the barrel. The guide shaft supports a sled and a clamping member. The sled is configured to translate through the barrel to eject the staples from an active cartridge of the plurality of cartridges in response to actuation of a push rod. After firing staples from the active cartridge, the sled and the guide shaft are configured to index or rotate the barrel within the housing to move a second cartridge of the plurality of cartridges to the active position upon retraction and subsequent movement of the sled through a second firing stroke.

Abstract: A surgical staple driver array. The array comprises a distal staple driver configured to operably support at least two distal surgical staples thereon that are each oriented in a distal direction. At least one first intermediate staple driver is configured to operably support at least two first surgical staples oriented in a first direction and at least two second surgical staples oriented in a second direction that differs from the first direction. At least one second intermediate staple driver is configured to be slidably supported adjacent at least one of the distal staple driver and a corresponding one of the first intermediate staple drivers. Each of the second intermediate staple drivers is configured to operably support five surgical staples thereon.

Abstract: A switching device for an electric tool includes: an output shaft unit disposed in an outer casing, having an output shaft, a movable ratchet wheel mounted such that the movable ratchet wheel is movable axially along the output shaft and is non-rotatable therewith; a fixed ratchet unit having a fixed ratchet wheel sleeved around the output shaft and having ratchet teeth for meshing with ratchet teeth of the movable ratchet wheel; and a function switch unit having a switch ring mounted rotatably on the casing. Rotation of the switch ring about its axis results in rotation of pawls within the switch ring, thereby driving the pawls about its pivot points and meshing and/or non-meshing of the pawls with external ratchet teeth of the fixed ratchet wheel, thereby switching the output shaft among a continuous rotation, rotation in a single direction and simultaneously providing an axial impact during the rotation.

Abstract: The invention relates to a driving device, comprising a hand-held housing having an energy transmission element accommodated therein for transmitting energy to a fastening element to be driven in, an exchangeable propellant charge and a combustion chamber arranged between the propellant charge and the energy transmission element, said combustion chamber extending about a central axis, wherein the combustion chamber is subdivided by means of a dividing member having a number of interruptions into a first subchamber adjoining the propellant charge and at least one second subchamber adjoining the energy transmission element, wherein an ejection region, enclosing a central axis, for the propellant charge is provided in the first subchamber, said ejection region extending between the propellant charge and a central region of the dividing member, wherein the ejection region is bounded at the central region of the dividing member by a closed surface of the dividing member.

Abstract: A machine for the formation of numbered packs of interleaved sheets of paper (6), includes a pair of counter-rotating motor-driven folding rollers (2, 3), an interference surface (11) mobile with a to-and-fro motion between a position (P1) of non-interference and a position (P2) of interference, and a mechanism (36) of cyclic movement of the surface (11) including at least one supporting crank (13) oscillating with respect to the carriage (26) and articulated to a first axis (15) of rotation of the surface, and a first motor-driven connecting rod (19) kinematically connected to the surface (11) to bestow the to-and-fro motion thereon.

Abstract: Provided is a hydraulic hammering device having improved hammering efficiency and of low cost. A piston has a valve switching groove between large-diameter sections thereof. A cylinder has three control ports at positions corresponding to the valve switching groove. A switching valve mechanism has a valve presser for always pressing a valve in one direction and also has a valve controller for moving, when supplying pressurized oil, the valve in the opposite direction against the pressing force of the valve presser. A valve control port communicates with the valve controller so as to supply the pressurized oil to the valve controller and is separated from a piston front chamber and a piston rear chamber. Only either a piston retraction control port or a piston advance control port communicates with the valve control port depending on advance or retraction of the valve switching groove.

Abstract: A steering-switching and hands-changing assembly for a pneumatic tool has a switching set, a speed-adjusting set, and a trigger set. The switching set has a selector valve and a switching stem. The selector valve is hollow and has a valve hole and an engaging seat. The switching stem is detachably connected to the selector valve and has an engaging claw and a toggle arm. The engaging claw selectively engages with the engaging seat. The speed-adjusting set is connected to the switching set and has a speed button. The speed button is movably and rotatably connected to the switching stem and has a mounting tube and a rotating tray. The trigger set is connected to the switching set and the speed-adjusting set, and has a trigger rod, a trigger, and an elastic element.

Abstract: An oscillating power tool includes a drive motor producing rotary motion and an oscillating mechanism for converting the motor rotary motion to an oscillatory side-to-side movement. The oscillating mechanism includes a fork having two arms and coupled to an output spindle and includes a bearing positioned between the two arms of the fork and coupled to the drive motor. The arrangement of the fork and the bearing isolate relative rotation and translation between the components of the tool while still imparting an oscillatory motion to the output spindle.

Abstract: A surgical instrument is disclosed. The instrument includes a handle portion, a body portion extending distally from the handle portion and defining a first longitudinal axis and an articulating tool assembly defining a second longitudinal axis and having a proximal end. The articulating tool assembly is disposed at a distal end of the body portion and is movable from a first position in which the second longitudinal axis is substantially aligned with the first longitudinal axis to at least a second position in which the second longitudinal axis is disposed at an angle with respect to the first longitudinal axis. The instrument also includes an articulation mechanism configured to articulate the articulating tool assembly, the articulation mechanism including an articulation sensor assembly configured to transmit a sensor signal to a microcontroller which is configured to determine an articulation angle of the articulation assembly.

Abstract: A circular stapler includes a staple body and an anvil assembly. The staple body includes an annular staple cartridge and an annular cutter located at a distal end thereof. The anvil assembly includes an annular anvil, an annular cutting pad and an anvil shaft. When the staple body and the anvil assembly are closed, the annular staple cartridge is associated with the annular anvil and the annular cutting pad to form at least two connected fixing spaces having height difference. The circular stapler facilitates fixing the severed staples for easily cutting. A buffer may be formed between the tissues near the new formed staples and the tissue near the severed staples in order to avoid or reduce lateral slipping, thereby reducing dragging the tissues on the end face of the anvil.

Abstract: A switchable gear drive for a handheld power tool has two gears which are to be engaged via an adjustable switching member, the switching member being in a locked position with a retaining ring which is fixedly held on a housing in a first gear and being in an unlocked position with the retaining ring in a second gear. Furthermore, a spindle for accommodating a tool is drivable by an axially spring-loaded gear wheel supported in the housing, the gear wheel being axially supported on the retaining ring on the side diametrically opposed to the switching member. The retaining ring is designed as a circumferential, closed ring.

Abstract: A surgical end effector is disclosed. The surgical end effector can comprise a shaft and a pair of jaws. The surgical end effector can further comprise a housing and a drive system, which can be positioned within the housing. The drive system can comprise a proximal assembly and a distal assembly, wherein the proximal assembly can be releasably coupled to the distal assembly by a pin.

Abstract: A surgical instrument and a drive mechanism, the drive mechanism includes a motor, a planetary gear train, and a bidirectional ratchet mechanism; the input sun gear of the planetary gear train engages the output shaft of the motor; an output carrier of the planetary gear train engages an executing mechanism of the surgical instrument through a transmission mechanism; the bidirectional ratchet mechanism includes a ratchet, a bidirectional pawl assembly, and a stop; the ratchet is in rigid connection with an annular gear of the planetary gear train; the bidirectional pawl assembly includes a bidirectional pawl; the stop selectively drives a first end or a second end of the bidirectional pawl to lock the ratchet, so as to lock corresponding rotation of the ratchet when the motor drives the planetary gear train, and unlock corresponding rotation of the ratchet when the transmission mechanism drives the planetary gear train.

Abstract: Adjunct material to promote tissue growth is provided. In general, an implantable adjunct can be configured to be applied to tissue by a surgical stapler in conjunction with staples. The adjunct can have one or more medicants releasably retained therein that are effective to provide a desired effect on tissue in-growth in a predetermined manner. One or more characteristics associated with the adjunct can be altered between various implementations to promote organized tissue remodeling in a desired manner during wound healing, such as by encouraging tissue growth to be in a certain direction and/or by discouraging tissue growth in a certain area and/or on a certain structure.

Abstract: A surgical device is provided that includes a jaw portion, having a first jaw in opposed correspondence with a second jaw, the second jaw including a surgical member. The surgical device may include a shaft portion coupled to a proximal end of the jaw portion and at least one motor configured to rotate the jaw portion relative to the shaft portion, to move the jaw portion relative to the shaft portion, move the first jaw relative to the second jaw and move the surgical member within the second jaw. The surgical member may be prevented from moving within the second jaw unless the first jaw is in a closed position relative to the second jaw. Advantageously, the surgical member may include one or both a cutting element or a stapling element, disposed within one of the jaws.

Abstract: A loading unit includes a shell assembly and a locking band. The shell assembly has a proximally extending annular body. The annular body defines two hook openings that oppose one another, a lug opening positioned between the hook openings, and a central passage for receiving a portion of a surgical instrument. The locking band has an arced body with two ends, a retention hook positioned adjacent each end of the body and extending from the inner surface of the body. Each of the retention hooks is disposed within a respective one of the hook opening to retain a respective one of the ends of the locking band to the annular body. The lug is disposable through the lug opening into the central passage to secure the loading unit to a surgical instrument.

Abstract: A surgical end effector for cutting and stapling tissue is disclosed. The surgical end effector comprises a first iaw and second iaw configured to clamp tissue when the first and second jaws are in a clamped position. The end effector further comprises a replaceable staple cartridge and a tissue thickness compensator configured to adapt to variations in the thickness of the clamped tissue. The tissue thickness compensator comprises three fibrous patterns oriented in three different directions and a tissue contacting surface comprising a textured surface. The textures surface is configured to minimize movement of the tissue relative to the tissue thickness compensator. The end effector further comprises an I-beam comprising a first camming member, a second camming member, and a cutting member. The end effector further comprises a first attachment member and a second attachment member configured to be progressively released by said cutting member.