CRH has been granted a patent for a push pad exit device designed for emergency egress. The device features a horizontal push bar actuator linked to a vertical door handle, with concealed mechanisms for a streamlined appearance. It includes an improved roller latch bolt for enhanced functionality. GlobalData’s report on CRH gives a 360-degree view of the company including its patenting strategy. Buy the report here.

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According to GlobalData’s company profile on CRH, was a key innovation area identified from patents. CRH's grant share as of July 2024 was 68%. Grant share is based on the ratio of number of grants to total number of patents.

Push pad exit device for emergency door egress

Source: United States Patent and Trademark Office (USPTO). Credit: CRH Plc

The patent US12054970B2 describes a push pad exit device designed for installation on a door, featuring a horizontally mounted push pad actuator and a vertically mounted door handle that encloses a latching mechanism. This mechanism is responsible for transitioning the door between a latched and unlatched position by engaging and disengaging a latch bolt assembly with a recess in the door frame. The latching mechanism includes a motion transfer link, a lever arm, and an over-center link, all of which are interconnected to facilitate the movement of the latch bolt. The push pad actuator is equipped with an actuator arm that pivots and interacts with the motion transfer link, converting horizontal motion into vertical motion to operate the latch assembly.

Further detailing the latch bolt assembly, the patent specifies that the latch bolt is a roller latch bolt, which includes a latch bolt body with a roller support. The roller is rotatably connected to this support and is designed to extend outwardly on the sweep side while being positioned inwardly on the latch side. The roller's axis of rotation is offset from the longitudinal axis of the latch bolt body, ensuring efficient operation. The design also incorporates support plates and a contact plate that maintains alignment with the roller's axis of rotation, enhancing the device's functionality. Overall, the push pad exit device aims to provide a reliable and efficient means of securing and releasing doors in various applications.

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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.