United States Patent D423750

Hung, Michael (Lu Chu Hsiang, TW)
Application Number:
Publication Date:
Filing Date:
MVP (H.K.) Industries Limited (North Point, HK)
Primary Class:
Field of Search:
D34/31, 254/8B, 254/84.11, 254/93H, 254/2B, 254/DIG.3
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US Patent References:
D416370JackNovember, 1999HungD34/31
D398730Hydraulic floor jackSeptember, 1998LinD34/31
5588639One man lift for motorcyclesDecember, 1996Holman254/8B
5551668Hydraulic jack with restorable lever and retaining deviceSeptember, 1996Hung254/8B
D364026JackNovember, 1995HungD34/31
5431369Hand/foot dual operated lever mechanism for hydraulic jacksJuly, 1995Hung254/8B
D358923Hydraulic floor jackMay, 1995HawkinsD34/31
5221073Safety floor jackJune, 1993Shockley254/8B
5201494Hydraulic jack and pump usable therewithApril, 1993Lundman254/8B
4765593Hydraulic jack having a removable hydraulic cartridgeAugust, 1988Hung254/8B
4635902Jack safety deviceJanuary, 1987Chou254/8B
D285855Vehicle service jackSeptember, 1986PersonD34/31
D285138JackAugust, 1986YamagushiD34/31
D272670Lifting jackFebruary, 1984TsujimuraD34/31
4277048Hydraulic actuator with automatic travel limit bypassJuly, 1981Okuda254/8B
D253696Hydraulic lifting jackDecember, 1979SuzukiD34/31
4018421Portable lifting jackApril, 1977Tallman254/2B
2610025Hydraulic jackSeptember, 1952MuellerD34/31
D162547N/AMarch, 1951JohnsenD34/31
D109498N/AMay, 1938PfauserD34/31
D109499N/AMay, 1938PfauserD34/31

Primary Examiner:
Lucas, Susan J.
Assistant Examiner:
Ramirez, Cynthia E.
Attorney, Agent or Firm:
Bacon & Thomas
1. The ornamental design for a jack, as shown and described.


FIG. 1 is a left side perspective view of a jack, showing my new design;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a left side view thereof;

FIG. 5 is a right side view thereof;

FIG. 6 is a top view thereof; and,

FIG. 7 is a bottom view thereof.