Quanta Services. has developed a ground clamp with a spring-driven safety lockout system for lineman safety. The clamp includes movable and fixed jaws, a piston, and a high-force spring to provide lockout. The design allows for remote operation using a hot stick tool, enhancing safety during electrical work. GlobalData’s report on Quanta Services gives a 360-degree view of the company including its patenting strategy. Buy the report here.

According to GlobalData’s company profile on Quanta Services, was a key innovation area identified from patents. Quanta Services's grant share as of January 2024 was 46%. Grant share is based on the ratio of number of grants to total number of patents.

Ground clamp for lineman safety during electrical work

Source: United States Patent and Trademark Office (USPTO). Credit: Quanta Services Inc

A ground clamp system has been patented, comprising a movable jaw, a fixed jaw, a housing containing a piston, and a linear spring to close the conductor receiving gap between the jaws. The spring force required to compress the spring is in the range of 140 to 250 pounds force. The system also includes a hot stick connector and an electrically conductive member mounted onto the spring. The system allows for optimal spring force concentration and electrical connection with the conductor clamped between the jaws, with serrations or teeth formed on the facing surfaces of the jaws.

Furthermore, the patented system includes a grounding clamp system with a hot stick and a hook retractably mounted on the hot stick. The system allows for easy opening and closing of the gap between the jaws to place a conductor and clamp it securely. The method of using the system involves manipulating the hot stick to position the ground clamp head, capturing the conductor, and closing the jaws onto the conductor. The system's design ensures efficient spring force concentration and electrical connection with the conductor, providing a reliable grounding solution for linemen in the field.

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GlobalData, the leading provider of industry intelligence, provided the underlying data, research, and analysis used to produce this article.

GlobalData Patent Analytics tracks bibliographic data, legal events data, point in time patent ownerships, and backward and forward citations from global patenting offices. Textual analysis and official patent classifications are used to group patents into key thematic areas and link them to specific companies across the world’s largest industries.