Title:
Hydraulic jack
United States Patent D571072


Inventors:
Kong, Shuyong (Zhejiang, CN)
Jiang, Changgen (Zhejiang, CN)
Wang, Jihui (Zhejiang, CN)
Application Number:
29/288352
Publication Date:
06/10/2008
Filing Date:
06/08/2007
Assignee:
Kong, Zhaogen (Zhejiang, CN)
Primary Class:
International Classes:
(IPC1-7): 1205
Field of Search:
D34/31, 254/DIG.8, 254/873, D34/28, 254/93H, 254/DIG.3, 254/2B, 254/45, 254/11
View Patent Images:
US Patent References:
D537225Quad caster jack apparatusFebruary, 2007HernandezD34/31
6986503Power unit for use with a jack stand that is convertible into a load-lifting jackJanuary, 2006Arzouman254/8B
D449915JackOctober, 2001ChangD34/31
D313492Hydraulic jackJanuary, 1991HungD34/31
D274668Hydraulic jackJuly, 1984EliassonD34/31



Primary Examiner:
Ramirez, Cynthia E.
Attorney, Agent or Firm:
Chan, Raymond Y.
David and Raymond Patent Firm
Claims:
CLAIM

1. The ornamental design for a hydraulic jack, as shown and described.

Description:

FIG. 1 is a perspective view of a hydraulic jack showing my new design;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a right end view thereof;

FIG. 5 is a left end view thereof;

FIG. 6 is a top view thereof; and,

FIG. 7 is a bottom view thereof.