Movable bottom frame

Details Movable bottom frame Movable bottom frame

2005-12-06

2005-12-06

Phan, Hau (Department: 3618)

Land vehicles

Wheeled

Body with bracketed-type or nonsuspended axles

C280S043130, C280S043170, C414S458000, C414S495000

Reexamination Certificate

active

06971656

ABSTRACT:
A movable bottom frame includes a frame body, two movable connecting rods and a locking rod. The frame body and the movable connecting rods are respectively provided with two casters and have their ends respectively and pivotally assembled with four support legs of a worktable. The locking rod is assembled between the two movable connecting rods. The frame body has a first pedal to be pedaled down to make the frame body and the movable connecting rods pivotally turned downward to let the casters stand on the ground and lift up the worktable. A second pedal positioned beside the first pedal can be pedaled down to disengage the locking rod from the locking hook, letting the worktable supported by its four support legs again. Thus the worktable can be stopped or moved slidably by pedaling.

REFERENCES:
patent: 3845933 (1974-11-01), Heizer, Jr.
patent: 5876173 (1999-03-01), English, Jr.
patent: 5957649 (1999-09-01), English et al.
patent: 6311992 (2001-11-01), Theising
patent: 6715979 (2004-04-01), Theising et al.

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