Attachment plug

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Description

FIG. 1 is a front view of an attachment plug;

FIG. 2 is a rear view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a bottom plan view thereof;

FIG. 5 is a right side view thereof, the left side view thereof being a mirror image;

FIG. 6 is a cross-sectional view taken along line 6--6 of FIG. 3 omitting internal structure;

FIG. 7 is a cross-sectional view taken along line 7--7 of FIG. 3 omitting internal structure;

FIG. 8 is a right side view thereof showing the earth terminal pin in the extended position; and,

FIG. 9 is a front and upper right perspective view thereof with the earth terminal in the extended position.

Referenced Cited
U.S. Patent Documents
2191385 February 1940 Herman
3495205 February 1970 Ricci
3531757 September 1970 Alden
3685000 August 1972 Robbins
4201431 May 6, 1980 McDonald
4767181 August 30, 1988 McEowen
4954091 September 4, 1990 Marble et al.
Foreign Patent Documents
1218034 June 1966 DEX
0215066 August 1990 JPX
0253578 October 1990 JPX
Patent History
Patent number: D339566
Type: Grant
Filed: Nov 21, 1991
Date of Patent: Sep 21, 1993
Assignee: Nichido Kogyo Kabushiki Kaisha (Osaka)
Inventor: Isao Okamoto (Osaka)
Primary Examiner: Wallace R. Burke
Assistant Examiner: Joel Sincavage
Law Firm: Lowe, Price, LeBlanc & Becker
Application Number: 7/796,129
Classifications
Current U.S. Class: D13/138