Programmable controller

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Description

FIG. 1 is a front, top and left side perspective view of a programmable controller showing our new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a top plan view thereof;

FIG. 5 is a bottom plan view thereof;

FIG. 6 is a left side elevational view thereof; and,

FIG. 7 is a right side elevational view thereof.

Referenced Cited
U.S. Patent Documents
D278710 May 7, 1985 Shimizu et al.
D282253 January 21, 1986 Shimizu et al.
D282461 February 4, 1986 Shimizu et al.
D292394 October 20, 1987 Boucher
D296432 June 28, 1988 Harris et al.
D302972 August 22, 1989 Boucher
D305020 December 12, 1989 Naoi et al.
D307740 May 8, 1990 Shibayama et al.
4152750 May 1, 1979 Bremenour et al.
Other references
  • Programmable Controller on cover of Control Engineering, Jan., 1988. Toshiba Programmable Controller on Contents page of Control Engineering, Jan., 1988. Omron Programmable Controller on p. 111 of Design News, Aug. 22, 1988. Programmable Controller on p. 6 of Mitsubishi publication IB (NA) 66155A (8804). Kostac SG-8 Brochure; Jul. 8, 1988 publication.
Patent History
Patent number: D325900
Type: Grant
Filed: Mar 1, 1989
Date of Patent: May 5, 1992
Assignee: Koyo Electronics Industries Ltd. (Tokyo)
Inventors: Norio Shimizu (Tokyo), Yuichi Watanabe (Tokyo)
Primary Examiner: Susan J. Lucas
Assistant Examiner: J. Sincavage
Law Firm: Sughrue, Mion, Zinn, Macpeak & Seas
Application Number: 7/317,698
Classifications
Current U.S. Class: Control Panel, Console Or Module (D13/162)