or
Bookmark and Share
   
Document Number
US Patent 4570984
Issued Date
February 18, 1986
Link
Inventors
Map
Abstract
A mostly automatic device designed to hold open a common interior or exterior door simply by swinging the door until it strikes a small spring-loaded lever which moves in a linear mode, allowing the door to pass by said lever and to contact a larger lever with its own spring which is required to securely hold the door's edge, said small lever also assisting in holding the door trapped within the confines of both levers until such time as the door is pulled forward, this action releasing it from the pressure of the larger lever, and at the same moment causing the smaller lever to rotate and permit the door to pass by it, thus allowing the door to be freed of its formerly confined condition.
Drawing
Door hold - US Patent 4570984 Drawing
Drawing from US Patent 4570984
Tags:
Description:
Amusing 0%
Clever 0%
Complex 0%
Efficient 0%
Historic 0%
Important 0%
Innovative 0%
Interesting 0%
Practical 0%
Simple 0%
Number of Claims:
1
Comments:
no comments yet
Owner
Published
February 18, 1986
Application Number
06/523,446
Filed
August 15, 1983
US Classification
292/18   292/71 292/DIG.15
Int'l Classification
E05C   5/00   (20060101)   E05C   17/00   (20060101)   E05C   19/02   (20060101)   E05C   19/00   (20060101)  
Assistant Examiner
Attorney/Law Firm
USPTO Field of Search
292/16   292/18   292/71   292/74   292/78   292/338   292/DIG.4   292/DIG.15   16/82   16/86  
Related Patents
4797970 - Foot-operated door security device

A door security device which is mounted in the floor or other flat surface in the arc of passage of a door which can be operated solely by one's foot. The door security device includes a housing with a flange plate which is mounted in the opening of the floor surface. A stop member is provided within the housing which assumes two alternate positions, a lowered position and a raised position. In the lowered position, the door is free to move through its arc of passage without obstruction by the door security device. By pressing down on the principal surface of the stop member, a latching mechanism is actuated which allows the stop member to be spring biased into the open position. In the open position the stop member obstructs the motion of the door through its arc of passage so that the door can be opened only a limited distance. To lower the stop member, one simply pushes down on the raised stop member a distance sufficient to actuate the pressure responsive latch mechanism that engages and holds the stop member in the lowered position. The door security device is principally spring actuated and is preferably constructed of metal to provide good endurance and strength characteristics.

6510587 - Door closure prevention apparatus and method - Owned by Sargent & Greenleaf, Inc. (Nicholasville, KY)

A door closure preventing device is mounted on the inside surface of a door and has a pivotal stop moveable between a deactivated position within the periphery of the door and the extended position extending beyond the periphery of the door to prevent closure of the door. The pivotal stop is moved to its extended position following opening of the door by a user and is then released to move by a spring to an intermediate position projecting beyond the door periphery following which closure of the door results in engagement of the door jamb by the stop to prevent complete closure. Engagement of the stop with the door jamb also returns the stop to is fully extended position and actuates a rotary latch so that upon subsequent opening movement of the door by the user the stop is automatically returned to its fully retracted position to permit a conventional door closure apparatus to fully close the door.

Claims
Description
About| FAQs| Terms & Disclaimer| Link to Us| Contact Us