Patent · US Expired

Door hold open and controlled release mechanism

US6910302B2 · kind B2 · utility

35Cited by
26References
15Claims
0Family size

Inventor

Key dates

Filing dateSep 13, 2001
Grant dateJun 28, 2005
Priority date—
Expiry dateOct 23, 2021

Classification

  • Technology area (CPC E)Fixed Constructions
  • CPC primaryE05Y2900/136
  • WIPO fieldCivil engineering
  • WIPO sectorOther fields

Abstract

A door hold open and controlled release mechanism is designed for usage in a doorway system having an inner door, an outer door and a door closer. It includes a catch mechanism and a catch release mechanism. The catch mechanism holds the outer door, typically a screen door or storm door, in an open position against the closing tendency of the door closer. Movement of the inner door to an open position then toward a closed position triggers the catch release mechanism which allows the outer door to close under the urging of the door closer.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.