Abstract: The present invention relates to a glasses leg spring hinge structure, comprising a glasses leg, plurality of metal rings, a rotating shaft, a leaf spring and a mounting head, wherein the metal rings are fixedly connected to a head of the glasses leg, wherein the rotating shaft is arranged in the metal rings, wherein the leaf spring is arranged at the head of the glasses leg, wherein the leaf spring is located below the rotating shaft, wherein a rotating shaft groove is formed in a side surface of the rotating shaft, wherein the mounting head is T-shaped and wherein a head of the mounting head is inserted into the rotating shaft groove.

Abstract: A plunger installation and retrieval tool that incorporates a magnet which magnetically supports a fluid lift plunger during insertion into or retrieval from a lubricator on a natural gas wellhead. The magnet is housed in a magnet holder suspended from an elongate hanger member the upper end of which is connect to a hanger support. An actuation rod slidably extends through the hanger support and through bores in the magnet and magnet holder, such that a downward force applied to the actuating rod will cause the lower end of the actuation rod to project below the magnet and break its magnetic bond with the plunger, thus releasing the plunger from the tool. The tool may be provided with a cylindrical skirt fitting closely around the upper end of the plunger to prevent laterally leading that could break the magnetic bond during plunger insertion and retrieval.

Abstract: A plunger installation and retrieval tool incorporates a magnet which magnetically supports a fluid lift plunger during insertion into or retrieval from a lubricator on a natural gas wellhead. The magnet is housed in a magnet holder suspended from an elongate hanger member the upper end of which is connected to a hanger support. An actuating rod slidably extends through the hanger support and through bores in the magnet and magnet holder, such that a downward force applied to the actuating rod will cause the lower end of the actuating rod to project below the magnet and break its magnetic bond with the plunger, thus releasing the plunger from the tool. The tool may be provided with a cylindrical skirt fitting closely around the upper end of the plunger to prevent laterally loading that could break the magnetic bond during plunger insertion and retrieval.

Abstract: A medical image management system includes: a medical imaging device for imaging a patient to receive a medical treatment and creating a medical moving picture; and a recording unit for recording the medical moving picture imaged by the medical imaging device. The system further includes: a measurement unit for measuring biological information on a person who performs the medical treatment; and an indexing unit for adding an index to the medical moving picture recorded in the recording unit, according to the measurement result obtained by the measurement unit. By providing this system, it is possible to add an index to the medical moving picture recorded, according to the change of the biological information on the person who performs medical treatment on a patient.

Abstract: A method of installing annular seals on a plunger. A first step involves positioning an annular seal on a seal installation tool adapted to hold the annular seal in an expanded state. A second step involves positioning the annular seal so that the annular seal overlies a body of a plunger. A third step involves transferring the annular seal from the seal installation tool to a seal groove in the body of the plunger.

Abstract: A method of installing annular seals on a plunger. A first step involves positioning an annular seal on a seal installation tool adapted to hold the annular seal in an expanded state. A second step involves positioning the annular seal so that the annular seal overlies a body of a plunger. A third step involves transferring the annular seal from the seal installation tool to a seal groove in the body of the plunger.

Abstract: A connector used to secure together a first and second piece of tubing. The connector has a tubular section that includes a slot in a first side, and at least one opening in a second side that is substantially perpendicular to the first side. The slot is defined by a first and second side wall that are spaced apart from each other and a rounded bottom wall that connects the two side walls. The first side wall has an opening aligned with the at least one opening in the second side of the tubular section. The slot extends into the tubular section from the first side to a depth greater than half a diameter, but less than a full diameter of the section. An engagement screw is positioned within the at least one opening for use in tightening the connector within the tubing.

Abstract: A plunger for a gas well including an elongate body having a first end and a second end. A sleeve overlying the body. The sleeve being shorter in length than the elongate body and is axially moveable between the first end and the second end of the body. At least one circumferential seal on the exterior surface of the sleeve, thereby providing a barrier to the passage of fluids along the exterior surface of the sleeve. At least one fluid flow passage is provided through the sleeve. A first axial stop is provided at the first end of the body and a second axial stop is provided at the second end of the body to limit axial movement of the sleeve. The second axial stop having sealing shoulders which engage the second end of the sleeve to close off the at least one fluid flow passage.