Pantagraph-form jack

Description

FIG. 1 is a front and left side perspective view of a pantagraph-form jack showing my new design, the opposite side being a mirror image of that shown;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a top plan view thereof.

FIG. 4 is a cross-sectional view thereof taken along lines IV--IV of FIG. 3;

FIG. 5 is a rear elevational view thereof.

FIG. 6 is a bottom plan view thereof.

Referenced Cited
U.S. Patent Documents
2071470 February 1937 Marlowe
3317187 May 1967 Skeppon
4732366 March 22, 1988 Suga
4765595 August 23, 1988 Alten
4836502 June 6, 1989 Yamauchi
Foreign Patent Documents
2460233 February 1981 FRX
Patent History
Patent number: D309819
Type: Grant
Filed: Mar 30, 1988
Date of Patent: Aug 7, 1990
Inventor: Sinnosuke Oshima (Shin-Machi, Tano-Gun, Gunma-Ken)
Primary Examiner: Wallace R. Burke
Assistant Examiner: Kay H. Chin
Attorney: Michael J. Striker
Application Number: 7/176,027
Classifications
Current U.S. Class: Jack Or Jackstand (D34/31)