Main nut for hydraulic jacks

- Aktiebolaget Nike

FIG. 1 is a front elevational view of a main nut for hydraulic jack showing my new design, the rear view being a mirror image of that shown. The broken lines are for illustrative purposes only and form no part of the claimed design;

FIG. 2 is a top perspective view thereof;

FIG. 3 is a right side elevational view thereof, the left side being a mirror image of that shown.

FIG. 4 is a top plan view thereof; and

FIG. 5 is a bottom perspective view thereof.

Referenced Cited
U.S. Patent Documents
D140518 March 1945 Page
D173695 December 1954 Fredholm
4746097 May 24, 1988 Chung et al.
Other references
  • Brochure "Nike 2000" Cover page and pp. 2-11 and back page, published Oct. 1984. Brochure "Martinetti Idraulici a Bottiglia" two pages, 1974. Advertisement "Hydraulic Bottle Jack" Aug. 1987. Brochure "Intermarket Inc." Cover page and p. 6. Brochure "F. Rassant" Cover page and page entitled Crics Portatifs Hydrauliques. Advertisement-"Original Weber Hydraulic"-Made in West Germany, two pages.
Patent History
Patent number: D305823
Type: Grant
Filed: Jul 7, 1988
Date of Patent: Jan 30, 1990
Assignee: Aktiebolaget Nike (Eskilstuna)
Inventor: Anders Persson (Eskilstuna)
Primary Examiner: Wallace R. Burke
Law Firm: Frishauf, Holtz, Goodman & Woodward
Application Number: 7/216,437
Current U.S. Class: Jack Or Jackstand (D34/31)