Graybar Electric has been granted a patent for a self-contained corrugated board feeder apparatus that upgrades existing processing machines. The apparatus includes variable velocity zones, vacuum sections, and a controller to ensure precise sheet feeding. The innovative design allows for efficient and controlled sheet feeding into host machines. GlobalData’s report on Graybar Electric gives a 360-degree view of the company including its patenting strategy. Buy the report here.

According to GlobalData’s company profile on Graybar Electric, was a key innovation area identified from patents. Graybar Electric's grant share as of February 2024 was 77%. Grant share is based on the ratio of number of grants to total number of patents.

Corrugated board sheet feeder apparatus for host machine

Source: United States Patent and Trademark Office (USPTO). Credit: Graybar Electric Co Inc

A recently granted patent (Publication Number: US11897716B2) discloses a corrugated board or paperboard sheet feeder apparatus designed to feed a single sheet from a stack into a host machine. The apparatus includes a feed table surface with feed elements arranged in variable velocity zones, controlled by dedicated motors or servo systems. Vacuum-powered suction sections hold the sheet against the feed elements while being fed. A controller receives velocity signals from the host machine to generate control signals for the motors, ensuring the sheet is fed at selected velocity profiles. The apparatus also features airflow restrictors, horizontal control surfaces, and a controllable drive mechanism to facilitate the feeding process.

Furthermore, the patent describes a sheet feeder apparatus for supplying sheets to a sheet processing host machine. The apparatus includes drive elements in different velocity zones, controlled by a controller to adjust the sheet velocity accordingly. Control surface sets in each velocity zone are movable to expose and conceal the drive elements, allowing for variable velocity profiles. Additionally, controllable vacuums in each velocity zone engage the sheet with the drive elements. The apparatus is designed to retrofit pre-existing corrugated board processing machines, with a controller receiving velocity signals from the host machine to control the drive wheels and vacuum zones. The primary servo motor accelerates the board to a velocity above that of the host machine before decelerating it to match the host machine's velocity, ensuring a smooth feeding process.

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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.