The invention relates to a nut having an internal thread and two nut parts (1, 2), each of the nut parts (1, 2) having a section of the internal thread which is radially slidable onto an external thread (25), the nut parts (1, 2) having cooperating connecting elements which permit relative displacement of the nut parts (1, 2) in a direction extending radially with respect to the axis of the internal thread until reaching a use position in which the internal thread of the nut engages around the external thread (25) with a small clearance. The connecting elements have guide surfaces (9-20) which guide the nut parts (1, 2) of the nut in a rotational movement about an axis of rotation extending transversely to the axis of the internal thread when displaced into the use position,

wherein each nut part (1, 2) has at least one first locking arm (5, 7) which has on one side a guide surface (9, 11) which induces the rotational movement when the nut parts (1, 2) are displaced and bears against a complementary guide surface (10, 12) on a second locking arm (6, 8) of the other nut part (1, 2).

The nut has a plurality of pressure threads (36-41) which are arranged around the internal thread and receive the pressure screws (26-31) that can be screwed out in the axial direction from a first axial end face (21) of the nut and have a receiving means (35) for a screwing tool in the region of a second axial end face (22) of the nut, wherein at least one pressure thread (36, 39) is arranged in the first locking arm (5, 7), which has the first axial end face (21), and wherein the second locking arm (6, 8) with the second axial end face (22), which cooperates with the first locking arm (5, 7), has a recess (42, 43) through which the pressure screw (29, 26) projects.

A split coupler, and methods of making and using such a split coupler, whereby the split coupler includes a first semi-cylindrical member, a second semi-cylindrical member, and an interlocking assembly configured to interlock the first and second semi-cylindrical members to form a substantially cylindrical coupler having a coupler inner surface which defines a throughbore. Additionally, the split coupler can include spiral threads coupled to the coupler inner surface. Furthermore, the split coupler can include a flange inwardly extending from the coupler inner surface.

A shockproof nut kit includes an upper nut and a lower nut, in which an end surface of the upper nut is provided with a boss of elliptic cylinder; on the upper end surface of the elliptic cylinder at a longer planar extension side is provided an unfilled corner; in an end surface of the lower nut is concavely formed a cylindrical groove matching with the boss of elliptic cylinder, and in the assembly state, the boss of elliptic cylinder on the upper nut is in clearance fit with the cylindrical groove in the lower nut. The present invention avoids the slipping and displacement of nuts in the meshing process, and ensures the coaxiality of the upper and lower nuts during installation to the utmost. In terms of both safety and shockproof, the present invention achieves satisfactory results, the installation thereof is convenient and reliable, and the disassembly thereof is simple.

The invention relates to a tensioning device for tensioning tensioning means such as chains, straps, ropes, threaded rods or the like, which is fitted with at least one tubular tensioning nut (4a, 4b) and at least one threaded bolt (2) which is inserted into the tensioning nut (4a, 4b) and interacting therewith. According to the invention, the tensioning nut (4a, 4b) is divided longitudinally into at least two tensioning nut halves (4a, 4b) and comprises at least one guide opening (5a, 5b) which interacts with a guide pin (6) for radially acting upon the two tensioning nut halves (4a, 4b).

A nut has two parts, each having a section of an internal thread which is radially slidable onto an external thread. The nut parts have cooperating connecting elements which permit relative displacement in a direction extending radially with respect to the axis of the internal thread until reaching a use position in which the internal thread of the nut engages around the external thread with a small clearance. The connecting elements have guide surfaces which guide the nut parts in a rotational movement about an axis of rotation extending transversely to the axis of the internal thread when displaced into the use position. Each nut part has at least one first locking arm which has on one side a guide surface which induces the rotational movement when the nut parts are displaced and bears against a complementary guide surface on a second locking arm of the other nut part.

Angled coupling including main pass-through coupler to allow first threaded rod to pass therethrough and second coupling extending at angle therefrom to receive second threaded rod. Angled coupling can be used for multiple purposes including, but not limited to, adjusting location of threaded rod, seismic restraints, storm surge restraints and/or providing additional mounting points for support members. Main coupler is configured to be secured to any location on first threaded rod without requiring it to be screwed onto first threaded rod. Main coupler may include first half and second half each traversing length thereof, that can be secured together at desired location on first threaded rod. Main coupler may include upper section having first approximately half of body thereof and corresponding threads and lower section having second approximately half of body (opposite first half) and corresponding threads. Angled coupling is made of high strength material (e.g., steel, cast iron, composites).

A segmented nut is formed by three segments held together with a sleeve for transport and fastening use. Rotation of the sleeve, such as in the order of 60°, frees the segments, allowing for quick release of the nut.

The present disclosure relates to a height adjustment device (1) comprising a height adjustment screw (3) having outer threads (5) and being oriented substantially vertically and arranged rotatably in relation to a chassis (7), and an adjustment nut (9) connected to a bracket (11) and comprising inner threads (13) for engagement with the threads (5) of the adjustment screw (3), such that a rotary movement of the height adjustment screw (3) results in a vertical linear movement of the bracket (11). The adjustment nut comprises a first part (15) and a second part (17) which together enclose the adjustment screw (3), wherein the first part (15) being adapted to be attached to the second part. The present disclosure also considers a robotic mower (101) comprising such a height adjustment device.

A quick-release and quick-installation nut includes a nut body. The nut body includes a first threaded block and a second threaded block. An inner wall of the first threaded block and an inner wall of the second threaded block are formed with inner threaded surfaces for cooperating with an outer threaded surface of a screw rod. A right end of the first threaded block is detachably connected to a right end of the second threaded block. A left end of the first threaded block is hingedly or detachably connected to a left end of the second threaded block. The nut can realize quick disassembly and installation with the screw rod.

Angled coupling including main pass-through coupler to allow first threaded rod to pass therethrough and second coupling extending at angle therefrom to receive second threaded rod. Angled coupling can be used for multiple purposes including, but not limited to, adjusting location of threaded rod, seismic restraints, storm surge restraints and/or providing additional mounting points for support members. Main coupler is configured to be secured to any location on first threaded rod without requiring it to be screwed onto first threaded rod. Main coupler may include first half and second half each traversing length thereof, that can be secured together at desired location on first threaded rod. Main coupler may include upper section having first approximately half of body thereof and corresponding threads and lower section having second approximately half of body (opposite first half) and corresponding threads. Angled coupling is made of high strength material (e.g., steel, cast iron, composites).