Sanwa has been granted a patent for a control system for a movable partition. The system includes an access control system with a lock control interface and a remote line interface that communicate with a door controller. The controller provides control signals to the movable partition based on lock modes asserted at the interfaces, allowing for the extension, retraction, and locking/unlocking of the partition. GlobalData’s report on Sanwa 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 Sanwa, Tunnel Rescue/Safety Devices was a key innovation area identified from patents. Sanwa's grant share as of September 2023 was 35%. Grant share is based on the ratio of number of grants to total number of patents.

Patent granted for an access control system for a movable partition

Source: United States Patent and Trademark Office (USPTO). Credit: Sanwa Holdings Corp

A recently granted patent (Publication Number: US11764713B2) describes an access control system for a movable partition. The system includes a remote interface with inputs and outputs, and a lock control interface with monitored inputs and an access control device input. The lock control interface is responsible for monitoring fault conditions, determining input conditions, and communicating instructions to a door controller. The door controller then provides control signals to the motor control circuitry of the movable partition based on the communicated instructions.

The access control system allows for the activation of outputs in response to inputs from an access device. It can determine whether the input condition is a lock or unlock condition and disable or enable the access control device accordingly. The communicated instructions to the door controller indicate whether the door should be closed and locked or unlocked. The control signals provided by the door controller to the motor control circuitry determine the movement of the movable partition.

The system also includes a selector switch in the remote interface to select between different types of electrical inputs. The lock control interface can compare voltage values received at the monitored input to a look-up table and determine if a fault condition is present. It can also receive a second voltage value and determine if it is associated with a fault condition.

The patent also describes a method of operating the movable partition, including defining different modes of operation such as locked mode and panic mode. In the locked mode, the system prevents normal responses to ingress indicators except for authorized requests. In the panic mode, the system prevents normal responses to both ingress and egress indicators except for requests asserted at the remote interface.

Overall, this patent presents an access control system for a movable partition that allows for secure and controlled movement of the partition based on input conditions and instructions communicated between different components of the system.

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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.