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| Number | Title | Issue Date |
| 6728992 | Retractable door system A retractable door system for returning to a nearly closed position a door that has been opened having: a catch knob secured to a doorframe; a housing secured to a door; a retractable cord anchored within the housing at one end and having means for attaching to the ... | 05/04/2004 |
| 6240598 | Arrangement for controlling an angularly movable member A control mechanism for use with a door closer, comprises a shaft (10), angularly movable between a normal position and a second position, the shaft (10) having a first portion (21a) and a second portion (21b), a brush spring (35) attached to the shaft fi... | 06/05/2001 |
| 6189181 | Door retaining device A door retaining structure is provided for limiting the path of a door pivotably mounted on a door frame. The door retaining structure includes a connection structure for interconnecting the door and the door frame. An inertial locking device is operative... | 02/20/2001 |
| 5937478 | Sliding door closing device A device for closing a sliding door includes a housing that attaches to the trailing edge of the sliding door. A tensioned cable extends from a spool in the housing to the door frame. When the sliding door is opened, the cable extends and undergoes an inc... | 08/17/1999 |
| 5630249 | Sliding screen door closing device A device for closing a sliding screen door is disclosed. The inventive device includes a housing mountable proximal to a sliding screen door. A retractable cable resiliently extends from the housing and couples with the sliding screen door to effect closi... | 05/20/1997 |
| 4757642 | Self-closing sliding door system For self-closing a sliding door, e.g. of a showcase, combinations of belts and sprockets, cables and pulleys, rods and springs and the like, which have proved difficult to construct, service and replace are replaced by one or more constant force springs a... | 07/19/1988 |
