Trolley jack
United States Patent D454419
US Patent References:
/D109498.html
Pfauser - - D109498

/D109499.html
Pfauser - - D109499

Portable lifting jack
Tallman - - 4018421

Hydraulic lifting jack
Suzuki - - D253696

Lifting jack with locking device
Kaneko - - 4241899


Inventors:
Lee, Judy (Kowloon, HK)
Chang, Johnny (Redmond, WA)
Application Number:
D/135536
Publication Date:
03/12/2002
Filing Date:
01/12/2001
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Assignee:
Test Rite Products Corporation (Buena Park, CA)
Primary Class:
D34/31
Field of Search:
D34/31, 254/84.11, D34/28, 254/93H, 254/DIG.3, 254/2B, 254/8B, D34/34
US Patent References:
4251056Creep preventing safety device for hydraulic jacks, especially of the type employed for partially or one-side raising road vehiclesManiglia254/8B
4277048Hydraulic actuator with automatic travel limit bypassOkuda254/8B
4289298Hydraulic lifting jack having a safety lifting saddleKameda254/8B
D263128Floor jackGlover, Jr. et al.D34/31
D272670Lifting jackTsujimuraD34/31
4635902Jack safety deviceChou254/8B
D296598JackHungD34/31
4765593Hydraulic jack having a removable hydraulic cartridgeHung254/8B
4846443Floor covering installation toolCollins et al.254/8B
4850568Lever connecting mechanism for hydraulic jacksHung254/8B
5042777Safety latch for a portable hydraulic jackAppelbaum254/8B
D332337JackWangD34/31
5201494Hydraulic jack and pump usable therewithLundman254/8B
5221073Safety floor jackShockley254/8B
D358923Hydraulic floor jackHawkinsD34/31
D364026JackHungD34/31
5551668Hydraulic jack with restorable lever and retaining deviceHung254/8B
D398730Hydraulic floor jackLinD34/31
5878996Lifting jack with safety and release systemLoan254/8B
D416370JackHungD34/31
D421516JackHungD34/31
D423750JackHungD34/31
D442345Trolley jackLee et al.D34/31
D444606JackHsuD34/31
Primary Examiner:
Ramirez, Cynthia E.
Attorney, Agent or Firm:
Sheppard, Mullin, Richter & Hampton LLP
Brueggemann, James R.
Claims:
1. We claim the ornamental design for a trolley jack, as shown and described.

Description:
FIG. 1 is a perspective view showing the design of a trolley jack with a handle wherein a lift bar is shown in broken lines.

FIG. 2 is a top plan view thereof.

FIG. 3 is a left side elevational view thereof.

FIG. 4 is a bottom plan view thereof.

FIG. 5 is a right side elevational view thereof.

FIG. 6 is a rear elevational view thereof; and,

FIG. 7 is a front elevational view thereof.

The broken line showing of the handle in FIG. 1 is for illustrative purposes only and forms no part of the claimed design.