Abstract: An easily removable high voltage ground stud insulating system allows ready access to the ground stud bolt having one end directly attached to a switchgear terminal bus, with the other end adapted to receive a temporary ground connector. A two-part insulative enclosure consisting of a first thermoplastic insulative cylinder is arranged over that part of the ground stud that is adapted for connection with the ground connector while a second insulative cylinder is arranged over the other end. The insulating properties of the thermoplastic material virtually eliminate arcing between the ground stud and the surrounding atmosphere when the switchgear is energized with high voltage. The insulating system is adapted for connection with the ground stud by means of a pair of threaded washers that serve to attach the insulative cylinders on both sides of the ground connector.

Abstract: Disclosed is a syringe including a barrel 12 having a needle 14 extending outwardly therefrom and a guard member 22 carried on the barrel, and movable between a retracted position exposing said needle and an extended position covering said needle. The guard member 22 has the ability to expand and contract as it is moved between retracted and extended positions. Interactive locking elements 38, 40, 57 and 59 on the barrel 12 and the guard member 22 permanently lock the guard member in the extended position, with pin elements 38 and 40 engaging the guard member to expand the guard member as it moves between the retracted and extended positions.

Abstract: An easily removable high voltage ground stud insulative enclosure allows ready access to the ground stud bolt having one end directly attached to a switchgear terminal bus, with the other end adapted to receive a temporary ground connector. The removable part of the insulative enclosure consists of a thermoplastic insulative cylinder that is arranged over that part of the ground stud that is adapted for connection with the ground connector. The insulating properties of the thermoplastic material virtually eliminate arcing between the ground stud and the surrounding atmosphere when the switchgear is energized with high voltage.

Abstract: An easily removable high voltage ground stud insulative enclosure allows ready access to the ground stud bolt having one end directly attached to a switchgear terminal bus, with the other end adapted to receive a temporary ground connector. The removable part of the insulative enclosure consists of a thermoplastic insulative cylinder that is arranged over that part of the ground stud that is adapted for connection with the ground connector. The insulating properties of the thermoplastic material virtually eliminate arcing between the ground stud and the surrounding atmosphere when the switchgear is energized with high voltage.

Abstract: A high voltage ground stud and insulative enclosure consists of a double-ended bolt having one end threaded for attachment to the switchgear terminal bus, with the other end threaded for engaging the thermoplastic insulative enclosure. A thermoplastic insulative cap is arranged over that part of the stud that extends through the switchgear terminal bus. The insulating properties of the thermoplastic material virtually eliminate arcing between the ground stud and the surrounding atmosphere when the switchgear is energized with high voltage.