Browse Prior Art Database

Locking Visor for Computer System Unit

IP.com Disclosure Number: IPCOM000115600D
Original Publication Date: 1995-May-01
Included in the Prior Art Database: 2005-Mar-30
Document File: 2 page(s) / 51K

Publishing Venue

IBM

Related People

Smith, PA: AUTHOR

Abstract

Disclosed is a method for providing a locking mechanism to prevent unauthorized access to the interior of a personal computer system unit. Such a mechanism typically takes the form of a standard commercial lock with an extension level or pawl arranged so that rotation of the key to a locking position causes the level to secure the cover of the system unit to its base. However, as more and more features such as CD ROMS and pluggable (PCMCIA) cards are added to personal computers, further security becomes necessary to prevent tampering with the added features.

This text was extracted from an ASCII text file.
This is the abbreviated version, containing approximately 90% of the total text.

Locking Visor for Computer System Unit

      Disclosed is a method for providing a locking mechanism to
prevent unauthorized access to the interior of a personal computer
system unit.  Such a mechanism typically takes the form of a standard
commercial lock with an extension level or pawl arranged so that
rotation of the key to a locking position causes the level to secure
the cover of the system unit to its base.  However, as more and more
features such as CD ROMS and pluggable (PCMCIA) cards are added to
personal computers, further security becomes necessary to prevent
tampering with the added features.

      A system unit providing improved security is shown in Figs. 1
and 2.  The unit comprises a cover (5) housing a box assembly to
which are attached a CD ROM drive (7) and a PCMCIA slot assembly (8).
A visor (1), shown in its open position in Fig. 1, is attached to the
cover by pivot pins (9), permitting it to be swung to a closed
position, as shown in Fig. 2, where it prevents operation of the CD
ROM access door and access to the PCMCIA slot.  A lock (10), shown in
greater detail in Fig. 3, is operable to secure the cover (5) to the
base assembly (6) by means of a pawl (3).  The pawl (6) drives a
locking pin (4) detent (11) through an aperture in the cover into a
recess (12) in the visor (1) when in the locked position, and, by a
camming action, to withdraw the locking pin (4) when in the unlocked
position to enable the visor to be opened.

      The d...