Miniature pneumatic test plug assembly
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FIG. 1 is a side view of a miniature pneumatic test plug assembly, showing our new design; the opposite side view being a mirror image thereof; the dotted line showing of a tag attached to the assembly being for environmental purposes only and does not form a part of the invention;
FIG. 2 is a top view thereof; the bottom view being a mirror image thereof;
FIG. 3 is an end view thereof;
FIG. 4 is an end view thereof and being opposite the end shown in FIG. 3;
FIG. 5 is a side view showing the miniature pneumatic test plug expanded in a pipe; the dotted line showing of the pipe and the tag of the assembly are for environmental purposes only and do not form a part of the invention;
FIG. 6 is a perspective view of the miniature pneumatic test plug assembly; the dotted line showing of a tag attached to the assembly being for environmental purposes only and does not form a part of the invention; and,
FIG. 7 is a side view of the miniature pneumatic test plug assembly with the hose in a bent position; the dotted line showing of the tag attached to the assembly being for environmental purposes only and does not form a part of the invention.
| 3086540 | April 1963 | Anderson |
| 3173449 | March 1965 | Custer et al. |
- Cherne Industries Incorporated, Cherne Single-Size Test-Ball Plugs, 1990, Product Sheet, 1 page.
Type: Grant
Filed: Jan 24, 1995
Date of Patent: May 7, 1996
Assignee: Cherne Industries Incorporated (Minneapolis, MN)
Inventors: Allen D. Mathison (Richfield, MN), Marc P. Bevacco (New Hope, MN)
Primary Examiner: Louis S. Zarfas
Assistant Examiner: E. Watterson
Attorney: Anthony G. Eggink
Application Number: 0/33,941
