Browse Prior Art Database

Hidden Hinge System for Flush Doors

IP.com Disclosure Number: IPCOM000111362D
Original Publication Date: 1994-Feb-01
Included in the Prior Art Database: 2005-Mar-26
Document File: 4 page(s) / 90K

Publishing Venue

IBM

Related People

Hobbs, SP: AUTHOR [+2]

Abstract

A design for flush door hinges that are integral with the door itself and are fully concealed when the door is in a closed position is disclosed.

This text was extracted from an ASCII text file.
This is the abbreviated version, containing approximately 52% of the total text.

Hidden Hinge System for Flush Doors

      A design for flush door hinges that are integral with the door
itself and are fully concealed when the door is in a closed position
is disclosed.

      Fig. 1 shows a cover 1 with an opening 2 that must be covered
with a flush door 3.  For aesthetic reasons, the door hinge mechanism
must be invisible from the outside of the door when the door is
closed.

      As shown in Fig. 2, door 3 is provided with a hinge arm 4
having pivot hole 5 and curved portion 6, the latter being a radius
about pivot hole 5.  Arm 4 also contains straight leg 7.

      Cover 1 containing opening 2, as shown in Fig. 3, is equipped
with slots 8 near the opening (note that the drawing shows opening 2
surrounded by a "bridge" 9 that contains slots 8.  Slots 8 are shown
slightly out of scale for clarity.  The bridge construction is not
necessary in all cases.  If the bridge is not in place, slots 8 are
not required unless there is an obstruction such as an operator panel
or other hardware directly behind door 3 impeding the motion of hinge
arms 4.  With such an obstruction, slots 8 must be added to the
obstruction itself.  Cover 1 is also equipped with pivot pins 10
accepting door 3 pivot holes 5, as shown in the Figures.

      Arms 4 are slid through cover 1 slots 8 and spread slightly
until pivot holes 5 can be engaged on pivot pins 10.  Note that the
sidewalls of slots 8 act to prevent arms 4 from being easily spread
from the outside of the cover set.  This acts to ensure that the door
cannot be inadvertently removed/disengaged.  Installation/removal is
easily accomplished from the inside of the cover set, however, thus
making it a simple procedure for factory or field personnel.  The
complete hinge mechanism is hidden when the door is closed.  The door
itself will, of course, contain some type of...