Browse Prior Art Database

Removable and Lockable System Cover

IP.com Disclosure Number: IPCOM000122564D
Original Publication Date: 1991-Dec-01
Included in the Prior Art Database: 2005-Apr-04
Document File: 4 page(s) / 130K

Publishing Venue

IBM

Related People

Bachman, WH: AUTHOR [+4]

Abstract

A design for a system cover was implemented that allows for easy access to the enclosed devices. In addition, the cover can be removed without the use of tools, has a locking feature, is self-aligning and is strong.

This text was extracted from an ASCII text file.
This is the abbreviated version, containing approximately 54% of the total text.

Removable and Lockable System Cover

      A design for a system cover was implemented that allows
for easy access to the enclosed devices.  In addition, the cover can
be removed without the use of tools, has a locking feature, is
self-aligning and is strong.

      A solution to the problem was found by designing a clever hinge
block into the cover design (see Fig. 1).  The hinge block
incorporates four prime features (see Fig. 2): (1) stop pin, (2)
security tab, (3) pivot pin and (4) spring release for toolless
removal.  All operations of the hinge block can be performed without
the use of tools.  Additionally, the requirement for locking the
cover was met by adding a readily available vendor-supplied keylock
to the design (see Fig. 1).

      The hinge block is a one-piece design that cleverly
incorporates many features.  It contains the pivot pin which allows
the cover to open and close.  It contains a stop pin which limits the
travel of the cover to a 90-degree arc, and a security tab which
prevents the cover from being removed when the cover is closed and
locked.  When the hinge block is assembled in the cover as shown in
Fig. 3, the hinge block can be moved from side to side (by pressing
the finger tab) to allow removal/installation of the cover assembly.
A compression spring is held captive by the assembly process and
ensures that the pivot pin is always engaged into the computer
chassis.

      Fig. 4 shows the hinge block being pressed to the...