Apparatus for advancing axially aligned pipes telescopically into or out of engagement

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Description

FIG. 1 is perspective view of the apparatus for advancing axially aligned pipes telescopically into or out of engagement showing my new design;

FIG. 2 is a top plan view thereof without the ratchet handle;

FIG. 3 is a front view thereof without the rachet handle, the rear view being a mirror image thereof;

FIG. 4 is a right end view thereof;

FIG. 5 is a left end view thereof;

FIG. 6 is a bottom view thereof; and,

FIG. 7 is a front view with the ratchet handle.

The ratchet handles have not been shown in figure drawings 2-6 for ease of illustration.

Referenced Cited
U.S. Patent Documents
D322207 December 10, 1991 Anson
889315 June 1908 Kenyon
2670174 February 1954 Lucker
3988819 November 2, 1976 Sato
Patent History
Patent number: D398504
Type: Grant
Filed: May 7, 1997
Date of Patent: Sep 22, 1998
Assignee: Suiken Technology Co., Ltd. (Osaka)
Inventor: Tamotsu Yamashita (Osaka)
Primary Examiner: Antoine Duval Davis
Law Firm: Nikaido, Marmelstein, Murray & Oram LLP
Application Number: 0/70,203
Classifications
Current U.S. Class: D 8/72
International Classification: 0805;