A high fatigue life detachable connector. The connector includes two J-shaped elements configured to be coupled to each other with a coupling element therebetween. Each of the J-shaped elements has a shorter leg and an opposed longer leg with the legs drawn together by a bow. Each bow has a top cross-section which transitions to a pair of opposed mid cross-sections 45 degrees from the top cross-section, and which thereafter transitions to a pair of opposed joiner cross-sections 90 degrees from the top cross-section, wherein the top cross-section has a substantially flat top exterior and an opposed radiused interior, resulting in optimized material utilization and structural integrity.

An anchor point comprising a connecting means for connecting the anchor point to an object to be fixed and/or handled, with an eyelet bend connected to a base body and a connecting eyelet hooked into the eyelet bend for connecting an anchoring or lashing means. The connecting eyelet has a smaller radius in its bend hooked into the eyelet bend than in its other bend, and carries two dividing elements opposite one another with respect to their longitudinal axis projecting into the interior space enclosed by the connecting eyelet. The connecting eyelet carries a projecting movement limiting stop with respect to its central fiber opposite the dividing elements, in each case on the outside for limiting the depth of immersion of the connecting eyelet in the eyelet bend together with the dividing elements which project on the inside and are likewise designed as movement limiting stops. Due to the movement limiting stops, the maximum diameter of the section of the connecting eye carrying the movement limiting stops is greater than the clear width of the eyelet bend, wherein the contour forming the movement limiting stops is shaped so that there is essentially only line contact between the movement limiting stops and the eyelet bend in the stop arrangement.

Problem. To provide a chain pin which makes it possible to improve wear resistance even in an environment in which degraded oil is used. Solution. A large number of pins are mixed/agitated together with a particle mixture including a penetrant comprising chromium (Cr) powder and tungsten carbide (WC) powder, and an iron chloride (FeCl.sub.3) catalyst, and WC particles penetrate the surface of the pins together with chromium carbide (CrC). As a result, a chromium carbide layer in which WC particles are diffused in a CrC layer (CrCWC layer) is formed on the outermost surface part of the steel forming the parent material of the pins.

Problem. To provide a chain pin which makes it possible to improve wear resistance even in an environment in which degraded oil is used. Solution. A large number of pins are mixed/agitated together with a particle mixture including a penetrant comprising chromium (Cr) powder and tungsten carbide (WC) powder, and an iron chloride (FeCl.sub.3) catalyst, and WC particles penetrate the surface of the pins together with chromium carbide (CrC). As a result, a chromium carbide layer in which WC particles are diffused in a CrC layer (CrCWC layer) is formed on the outermost surface part of the steel forming the parent material of the pins.

A component is provided, in which at least one surface is at least partially provided with a layer system. According to the invention, the layer system is formed of a tetrahedral, hydrogen-free, amorphous first carbon layer applied to the at least one surface of the component, onto which first carbon layer a hydrogen-free amorphous second carbon layer is applied.

A component is provided, in which at least one surface is at least partially provided with a layer system. According to the invention, the layer system is formed of a tetrahedral, hydrogen-free, amorphous first carbon layer applied to the at least one surface of the component, onto which first carbon layer a hydrogen-free amorphous second carbon layer is applied.

A part having at least two portions thereof secured to one another, yet moveable with respect to one another, includes a homogeneous first portion and a homogeneous second portion, wherein a portion of the first portion extends through the second portion, and is secured therein. The part can be configured as a hinge, a chain, etc., wherein the first part includes a pin extending therefrom including a second portion having an enlarged width with respect to the smallest width of a first portion thereof, which is received within a bore in the second portion, wherein the bore includes a second portion having a width greater than the smallest width of a first portion thereof, and the second portion of the pin is received within the second portion of the bore to secure the first part to the second part, but allow movement therebetween. Using additive manufacturing techniques, the first part and second part are formed simultaneously.

A part having at least two portions thereof secured to one another, yet moveable with respect to one another, includes a homogeneous first portion and a homogeneous second portion, wherein a portion of the first portion extends through the second portion, and is secured therein. The part can be configured as a hinge, a chain, etc., wherein the first part includes a pin extending therefrom including a second portion having an enlarged width with respect to the smallest width of a first portion thereof, which is received within a bore in the second portion, wherein the bore includes a second portion having a width greater than the smallest width of a first portion thereof, and the second portion of the pin is received within the second portion of the bore to secure the first part to the second part, but allow movement therebetween. Using additive manufacturing techniques, the first part and second part are formed simultaneously.

A chain block is provided including a load chain which hangs a load, and a load sheave member which is rotatably supported between a first frame and a second frame, around which the load chain is wound, and which has a chain pocket in which the load chain goes, the load chain is made of a steel material having the Rockwell hardness C scale (HRC) of 47 to 51, and the load sheave member is made of a steel material in which at least the chain pocket has the Rockwell hardness C scale (HRC) of 40 to 45.

A chain block is provided including a load chain which hangs a load, and a load sheave member which is rotatably supported between a first frame and a second frame, around which the load chain is wound, and which has a chain pocket in which the load chain goes, the load chain is made of a steel material having the Rockwell hardness C scale (HRC) of 47 to 51, and the load sheave member is made of a steel material in which at least the chain pocket has the Rockwell hardness C scale (HRC) of 40 to 45.