227results about "Shackles" patented technology

Locking devices as well as methods of their manufacture and use are disclosed. One locking device includes first and second legs operatively coupled together to form a perimeter substantially uninterrupted from a proximal end of the first leg to a proximal end of the second leg. The proximal ends are separated by an opening, and each proximal end respectively defines a passage. A keyway extends from the first leg passage, and first and second shoulders are adjacent the keyway. A receiving area extends from the second leg passage. A locking pin passes through the second leg passage and is movable between an open position, a closed position, and an intermediate position. The locking pin has a key and a stop that prevent the locking pin from passing entirely through the second leg passage. A biasing member biases the locking pin in various ways.

A watch chain is disclosed. The watch chain comprises a pin groove formed at a spaced inner surface with a certain depth; a plurality of outer connection pieces which have through holes passing through the inner side of the pin groove in the direction of the back surface; a plurality of central connection pieces which have pin holes at spaced portion with the left and right sides of the same being communicated; a connection pin which passes through the pin hole of the central connection piece and is engaged at the pin groove of the outer connection piece of which both ends are connected with both sides of the central connection piece and with a screw hole being formed at both sides of the connection pin; and a screw which is engaged at the screw hole of the connection pin through the through hole, wherein the central connection piece and the outer connection piece of both sides are engaged so that a connection pin is inserted into the pin groove of the outer connection piece of one side and the pin groove of the outer connection piece of the other side through the pin hole of the central connection piece, and the screw is engaged at the screw hole of the connection pin through the through hole formed at the back surface of the outer connection piece.

A safety catch connector includes a catch member, first and second sleeves at two ends of the catch member to define a notch, a locking shaft slidably coupled at the first and second sleeves to selectively open and close the notch, a first controlling unit provided at the first sleeve to releasably lock up the locking shaft at the first sleeve, and a second controlling unit provided at the locking shaft to releasably lock up the locking shaft at the first sleeve, such that the first and second controlling units serves as two safety mechanisms to avoid an unintentional unlocking operation of the locking shaft. The locking shaft is quickly slid to open and close the notch for easy accessing.

a device which can slide up and down on a chain or cable, can be loosened to attach to the chain or cable, but does not have any parts that come free when the part is loosened.

A swivel attachment device comprising a pair of rings able to rotate freely with respect to one another around an axis of rotation defined by a central pivot-pin. At least one of the rings is in the form of a hook delineating a lateral access space. A removable closing part, composed of a spacer through which a fixing screw passes, is able to close said space performing partial take-up of the tensile forces.

A locking clip for securing one or more objects thereon includes a loop portion and a sleeve. The loop portion defines first and second ends interconnected by first and second intermediate segments. The first intermediate segment includes a gap defined therein. The sleeve is disposed about the first and second intermediate segments between the first and second ends of the loop portion. The sleeve is rotatable relative to the loop portion between a closed position, wherein the sleeve extends completely along a length of the gap to inhibit passage of the object(s) therethrough, and an open position, wherein the sleeve extends only partially along the length of the gap to permit passage of the object(s) therethrough. The loop portion and / or the sleeve also includes a feedback feature configured to produce an audible and / or a tactile feedback response when the sleeve is rotated to the closed and / or the open position.

A hanging chain structure for a pendent lamp includes a plurality of hanging rings connected with each other. Each of the hanging rings includes a hook body, and a stop member pivotally mounted on the hook body. Thus, the hanging rings are connected with each other easily and rapidly, so that the hanging chain structure is assembled easily and rapidly, thereby facilitating the operator mounting the hanging chain structure. In addition, the hanging chain structure is combined with the pendent lamp and the ceiling easily and rapidly, thereby facilitating the operator mounting the pendent lamp to the ceiling.

A closing link for a bicycle chain that includes a first outer link plate having a first elongated hole and a first chain pin extending therefrom and a second outer link plate having a second elongated hole and a second chain pin extending therefrom. The first chain pin is received in the second elongated hole and the second chain pin is received in the first elongated hole Each chain pin has a head at one end, a foot at the other end and a groove therebetween. Each elongated hole has a larger diameter end, a smaller diameter end and a displacement region therebetween. The larger diameter end has a diameter larger than a diameter of the pin head. The smaller diameter end receives the groove of the chain pin and includes a countersink to receive the pin head. The displacement region includes sides having recessed and unrecessed portions. The recessed portions have a smaller depth than a depth of the countersink at least in the region of the countersink.