A loop structure includes a first element having a first loop, and a second element having a second loop, the first loop interlocking with the second loop. Each of the first and second elements include a plurality of strands, wherein at least a portion of the strands are formed from a flexible material. The strands of the first and second elements are processed in a textile-like manner into one of a braided, woven, knitted, or enmeshed structure defining at least two webs spaced-apart along a longitudinal direction of the first and second elements. The strands are divided into longitudinally extending sections between the webs, the sections forming wings that connect the webs. In the first element, the wings form the first loop, and in the second element, the wings form the second loop.

A loop structure includes a first element having a first loop, and a second element having a second loop, the first loop interlocking with the second loop. Each of the first and second elements include a plurality of strands, wherein at least a portion of the strands are formed from a flexible material. The strands of the first and second elements are processed in a textile-like manner into one of a braided, woven, knitted, or enmeshed structure defining at least two webs spaced-apart along a longitudinal direction of the first and second elements. The strands are divided into longitudinally extending sections between the webs, the sections forming wings that connect the webs. In the first element, the wings form the first loop, and in the second element, the wings form the second loop.

A sheet-jammable apparatus having two adjacent segments moveable against each other in a first state when a moving force is applied, and the two adjacent segments remain at a fixed relative position in a second state when the moving force is applied.

A sheet-jammable apparatus having two adjacent segments moveable against each other in a first state when a moving force is applied, and the two adjacent segments remain at a fixed relative position in a second state when the moving force is applied.

A chain damping and shock absorber system for a chain includes one or more damping devices, each damping device installed to a segment of the chain, such that the chain and the one or more damping devices installed to a chain segment form a damped and compressed chain assembly. In response to a tensile force applied to the chain, the chain segment is extendable to an extended length which is between its compressed length and its full length. Methods of installing the chain damping and shock absorber system are provided.

A chain damping and shock absorber system for a chain includes one or more damping devices, each damping device installed to a segment of the chain, such that the chain and the one or more damping devices installed to a chain segment form a damped and compressed chain assembly. In response to a tensile force applied to the chain, the chain segment is extendable to an extended length which is between its compressed length and its full length. Methods of installing the chain damping and shock absorber system are provided.

The invention is a silent chain with a profile capable of corresponding with the profiles of both sprockets and racks. The purpose of the invention is to convert rotational motion to linear motion in a way that is superior to the traditional rack and pinion device by allowing for more surface area contact with the rack through the use of, rather than a pinion, a silent chain that is capable of engaging with a rack. The invented silent chain comprises link plates of a particular shape stacked in alternating rows and joined together by connecting pins in such a way as to be bendable. The link plates are shaped such that the teeth of the link plates are offset when the chain is straightened, which allows the profile of the silent chain to correspond with the profiles of both sprockets and racks.

A support and guiding apparatus for feeder lines having a feed pipe for excavation devices is disclosed. The apparatus has a support branch and a plurality of crosspieces connected with the support branch which includes ring chain having a first and a second series of rings linked to one another in an alternate manner, defining a longitudinal axis (X); a plurality of spacer elements coupled to rings of the first series of rings so that they cannot slide. Each of the spacer elements has a seat that houses a ring of the first series of rings by orienting it in a substantially stable manner on a first lying plane, a second seat and a third seat opposite to each other that partially house the rings of the second series of rings linked to the one housed in the first seat by orienting them on a second lying plane transverse to the first lying plane, each of said spacer elements being arranged to prevent the longitudinal sliding between the rings and to allow the rotation of the rings of the second series of rings only on the second lying plane around a rotation axis perpendicular to the longitudinal axis of the chain and to the second lying plane.

A unidirectionally bendable transmission chain is provided. At a first side thereof, an inner stop plate is fixed between a pair of inner chain plates at both ends of pin shafts, and an outer stop plate is fixed between a pair of outer chain plates at both ends of the pin shafts. Both ends of the inner stop plate are flush with axes of pin holes provided at both ends of the inner chain plates, and both ends of the outer stop plate are respectively provided with extensions beyond the outer chain plates; the extensions of the outer stop plate form a one-sided support for the inner stop plate to prevent the transmission chain from bending toward the first side, thus the transmission chain bends unidirectionally toward a second side opposite to the first side. A hoisting mechanism and a liftable roadblock having the above transmission chain are further provided.

A unidirectionally bendable transmission chain is provided. At a first side thereof, an inner stop plate is fixed between a pair of inner chain plates at both ends of pin shafts, and an outer stop plate is fixed between a pair of outer chain plates at both ends of the pin shafts. Both ends of the inner stop plate are flush with axes of pin holes provided at both ends of the inner chain plates, and both ends of the outer stop plate are respectively provided with extensions beyond the outer chain plates; the extensions of the outer stop plate form a one-sided support for the inner stop plate to prevent the transmission chain from bending toward the first side, thus the transmission chain bends unidirectionally toward a second side opposite to the first side. A hoisting mechanism and a liftable roadblock having the above transmission chain are further provided.