Browse Prior Art Database

Early Warning Emergency Off (EMO) Protective Cover

IP.com Disclosure Number: IPCOM000120938D
Original Publication Date: 1991-Jun-01
Included in the Prior Art Database: 2005-Apr-02
Document File: 1 page(s) / 59K

Publishing Venue

IBM

Related People

Cherrone, JA: AUTHOR [+2]

Abstract

Disclosed is a device for completely encapsulating standard emergency off (EMO) buttons with a pliable shield (see figure 1). The pliable shield provides an effective means for preventing accidental shutdowns of critical production equipment through a combination of material properties (particularly durometer), extent of protrusion from the point of contact with a standard industrial EMO button, material color, appropriate labeling, and touch sensitive design. The protective pliable cover is easily adapted to a broad range of switch applications (e.g., emergency off switches, start/stop switches, activation switches, and power switches), and meets Occupational Safety and Health Administration General Industry Standards (OSHA) requirements for unencumbered access to many of the switch applications cited in OSHA 5(a)(1).

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Early Warning Emergency Off (EMO) Protective Cover

      Disclosed is a device for completely encapsulating standard
emergency off (EMO) buttons with a pliable shield (see figure 1).
The pliable shield provides an effective means for preventing
accidental shutdowns of critical production equipment through a
combination of material properties (particularly durometer), extent
of protrusion from the point of contact with a standard industrial
EMO button, material color, appropriate labeling, and touch sensitive
design.  The protective pliable cover is easily adapted to a broad
range of switch applications (e.g., emergency off switches,
start/stop switches, activation switches, and power switches), and
meets Occupational Safety and Health Administration General Industry
Standards (OSHA) requirements for unencumbered access to many of the
switch applications cited in OSHA 5(a)(1).

      In figure 1, EMO switch/button (1) is mounted in tool panel
(4).  EMO switch/button (1) must not be recessed into tool panel (4).
The under-cut groove in polycarbonate retaining shield (2) allows EMO
protective cover (3) and retaining shield (2) to be fastened securely
together. Retaining shield (2) also has provision for attachment of
EMO protective cover (3).  The diameter of retaining shield (2)
exceeds  diameter of EMO switch/button (1) in order to maintain a
3/8" protrusion distance between early warning EMO protective cover
(3) and EMO switch/ button (1).  The 3/8" protrusion...