Enclosure for a programmable input/output controller

- IBM
Description

FIG. 1 is a top, front, right side perspective view of an enclosure for a programmable input/output controller showing my new design;

FIG. 2 is a front elevation thereof;

FIG. 3 is a rear elevation thereof;

FIG. 4 is a bottom plan thereof;

FIG. 5 is an enlarged partial sectional view taken on line 5--5 of FIG. 2; and,

FIG. 6 is a bottom, rear, left side perspective view thereof.

The left side of the enclosure is identical to the right side shown in FIG. 1.

Referenced Cited
U.S. Patent Documents
D254613 April 1, 1980 Ault
D300426 March 28, 1989 Lotz
D319425 August 27, 1991 Bibbiani
4672510 June 9, 1987 Castner
4912604 March 27, 1990 Vaisanen
4922407 May 1, 1990 Birk et al.
Other references
  • Dialer and logger on p. 176 of Control Engineering, Sep. 1989. Controller on p. 227 of Control Engineering, Sep. 1989. Programmable controller on p. 99 of Control Engineering, Nov. 1989. Controller US-5000 on p. 72 of Electrical Construction & Maintenance, Dec. 1989.
Patent History
Patent number: D340031
Type: Grant
Filed: Oct 15, 1990
Date of Patent: Oct 5, 1993
Assignee: International Business Machines Corporation (Armonk, NY)
Inventor: David W. Hill (Rochester, MN)
Primary Examiner: Wallace R. Burke
Assistant Examiner: Joel Sincavage
Attorney: Roy W. Truelson
Application Number: 7/598,447