Adjustable automatic door closure apparatus and method for use thereof

摘要

An apparatus and related method for use to automatically close display doors for display cases and the like is disclosed which allows the amount of door closing preloading bias to be easily and quickly adjusted with a high degree of precision to vary the amount of force used to close a display door. A display pivot member having an adjustment wheel is placed into engagement with a base member having a mechanism allowing rotation of the display pivot member only in a direction increasing the preloading bias on a biasing member located in the display door and used to close the display door. The base member includes an access slot to release the display pivot member, allowing it to rotate in the opposite direction to release the bias on the biasing member to allow the adjustment operation to be redone.