An instrument for torque controlled tightening of a threaded device, including a handle, an articulable head that is articulably connected to the handle, the articulable head including a drive ratchet configured to rotate relative to the articulable head and to engage with the threaded device or a tool for engaging with the threaded device, an elastic device arranged at the handle, and a pulling mechanism operatively connecting the articulable head with the handle, the pulling mechanism having a ratchet head mechanism to engage with the drive ratchet of the articulable head, and configured to engage with the elastic device at the handle such that the elastic device is compressed or expanded upon an application of a torque to the drive ratchet and simultaneously the ratchet head mechanism blocks the rotation of the drive ratchet.

An angle adjustment structure for pressing a hand tool contains: a first handle, a second handle, a spring washer, a return spring, two pressers, and two fasteners. The first hand includes a contact sheet having a first thickness, a first toothed orifice, and a positioning portion. The second handle includes a groove having a second thickness, two fixing plates, a second toothed orifice, and a trench. A profile of the second toothed orifice is identical to a profile of the first toothed orifice. The return spring is defined the two pressers. A respective presser includes a pressing portion, a slot, a notch, a toothed column, and a fixing portion. A respective fastener is engaged between the second handle and the respective presser to limit the respective presser to operate among the second toothed orifice, the trench, the recess, and the first toothed orifice.

A ratchet wrench includes a main body, a ratchet wheel, a pawl member, and a direction control unit. The main body is provided with a first receiving recess, a second receiving recess, a third receiving recess, a first abutting face, and a second abutting face. The pawl member is provided with an engaging portion, a cavity, two first abutting portions, and two corners. The direction control unit includes a rotation member, a push member, and an elastic member. The rotation member is provided with a cylindrical block, and two second abutting portions. The push member is provided with a push face and a receiving space. The push member is restricted by the first abutting face and restricts the rotation member such that the rotation member is mounted in and will not be detached from the third receiving recess.

Disclosed herein is a ratchetable wrench, with, in some embodiments the ability to interchange wrench heads for working with various styles of rotatable fittings. The disclosed ratchetable wrench includes a two-pawl ratchet mechanism for use with an open-ended wrench head. The two-pawl mechanism allows the wrench head to be freely rotatable relative the wrench body when the pawls are in a user-selected tooth-disengaged position such that the pawls are disengaged from teeth located about the periphery of an installed cogged wrench head and rotatable only in one direction relative the wrench body when the pawls are in a tooth-engaged position. A plurality of interchangeable wrench heads for use with an embodiment of the ratchetable wrench and a method of the interchanging various wrench heads are also disclosed herein.

A ratchet seat, a ratchet tool head, and a bidirectional ratchet hand tool are disclosed. A handle unit includes an annular groove and a cavity. A positioning ring is stretchably disposed in the annular groove. A first actuating unit and a second actuating unit are elastically placed one over another in the cavity. An outer peripheral surface of a ratchet seat forms a ratchet toothed portion and a positioning groove. The ratchet seat is movable between a first position and a second position in an up-down direction. When the first position is assumed, the positioning groove is slidably moved to engage with the positioning ring, and the first actuating unit meshes with the ratchet toothed portion. When the second position is assumed, the positioning groove disengages from the positioning ring, and the second actuating unit meshes with the ratchet toothed portion.

A ratchet seat, a ratchet tool head, and a bidirectional ratchet hand tool are disclosed. A handle unit includes an annular groove and a cavity. A positioning ring is stretchably disposed in the annular groove. A first actuating unit and a second actuating unit are elastically placed one over another in the cavity. An outer peripheral surface of a ratchet seat forms a ratchet toothed portion and a positioning groove. The ratchet seat is movable between a first position and a second position in an up-down direction. When the first position is assumed, the positioning groove is slidably moved to engage with the positioning ring, and the first actuating unit meshes with the ratchet toothed portion. When the second position is assumed, the positioning groove disengages from the positioning ring, and the second actuating unit meshes with the ratchet toothed portion.

A ratchet wrench includes a ratchet unit which has a ratchet tube with a reception hole. A collar is connected to one side of the head and has a slit defined radially through the collar. An engaging member has a first end thereof fixed to the collar, and a second end of the engaging member extends through the slit. The second end of the engaging member is partially located within the through hole of the collar and located above the reception hole of the ratchet tube. An operation ring is mounted to the collar and connected the engaging. A C-clip is mounted to the outer periphery of the collar. When the operation ring is rotated, the second end of the engaging member is pushed to move within the through hole of the collar to position a socket located in the reception hole of the ratchet tube.

A method may include receiving, by a first base station from a second base station, a handover request message comprising traffic pattern parameters of a traffic of a wireless device, the traffic pattern parameters comprising a first traffic periodicity, a first timing offset, and a first message size. The method may also include sending, to the second base station, a handover request acknowledge message indicating at least one periodic resource configuration parameter for the wireless device. The method may further include receiving, from the wireless device, a random access preamble associated with a handover of the wireless device. The method may additionally include transmitting, to the wireless device, a control command indicating activation of radio resources associated with the at least one periodic resource configuration parameter and indicating a resource block assignment for transmission of the traffic of the wireless device.

The present invention relates broadly to pawl mechanism for a tool, such as a ratchet wrench. The pawl mechanism includes first and second pawls that are selectively engageable with a drive gear to provide first and second rotational drive directions. Each of the first and second pawls includes an outwardly protruding hook type projections that engage respective recesses or grooves in a pawl carrier to operably couple the pawl carrier to the first and second pawls. The pawl carrier includes first and second pawl pockets that receive the respective first and second pawls. The pawl carrier also includes first and second recesses or grooves proximate to the respective first and second pawl pockets, and that receive the hook type projections.

A powered ratchet tool includes a housing, an output member having a toothed surface, and a drive mechanism for driving the output member. The drive mechanism includes a yoke in which the output member is arranged. A first pawl is in the yoke and is biased toward the toothed surface of the output member and a second pawl is in the yoke and is biased toward the toothed surface of the output member. A selection ring having a circumferential wall is arranged between the yoke and the toothed surface of the output member. The circumferential wall has a first window and a second window and the selection ring is moveable between a first position and a second position. The selection ring also includes a tab extending radially outward from the circumferential wall and the housing for moving the selection ring between the first and second positions.