Foot stand structure of an adjustable computer desk

• US 6,540,191 B2
• Filed: 03/19/2001
• Issued: 04/01/2003
• Est. Priority Date: 03/19/2001
• Status: Expired due to Fees

• Current Assignee: Lin-Ho Liu
• Original Assignee: Lin-Ho Liu
• Inventors: Liu, Lin-Ho
• Primary Examiner(s): King, Anita
• Assistant Examiner(s): BAXTER, GWENDOLYN WRENN
• Application Number:
  US09/810,612
• Publication Number:
  US 20020130228A1
• Time in Patent Office: 743 Days
• Field of Search: 74/891.3, 74/892.8, 108/545, 108/144.11, 108/147, 108/147.11, 254/92, 248/422, 248/405, 248/161, 248/624
• US Class Current: 248/422
• CPC Class Codes: A47B 13/06 of metal A47B13/023 takes precedence
• CPC Class Codes: A47B 21/00 Tables or desks for office equipment, e.g. typewriters, keyboards
• CPC Class Codes: A47B 9/04 with vertical spindle
• CPC Class Codes: Y10T 74/18616 Single input, plural outputs
• CPC Class Codes: Y10T 74/18784 including bevel gears

Abstract

A foot stand structure of an adjustable computer desk, more especially, a foot stand structure of an adjustable computer capable of performing high efficient adjustment for desk body such as those used for placing the computer on it during operations. The structure not only efficiently and precisely adjusts that height of the computer desk, but also surpasses the inconvenience caused by the disassembly of the foot stand of the prior computer desk for adjusting the height. The structure includes adjusting frame seats, a link shaft rod, a set of inner rods with helical teeth and matching threaded bushes, a set of smooth inner rods and bushes, a foot stand and an external rotating handle bar.

Claims

1. A foot stand to a foot stand structure of an adjustable computer desk, comprising of a foot stand mounted by a set of threaded bushes thereon, the threaded bushes disposed by a set of inner rods with helical teeth inside the threaded bushes, the inner rods with the helical teeth extending respectively upwards and inserted into an inner space of an adjusting frame seat, a link shaft rod connecting between two transverse adjusting frame seats, and an external rotating handle bar, is characterized that:

the foot stand has a set of threaded bushes and a set of inner rods with helical teeth extending inside the threaded bushes mounted on the foot stand;

a set of smooth bushes and inner rods mounted on the foot stand;

a transverse extension rod connecting the inner rods with the helical teeth with the smooth inner rods;

a spring mounted on bottom portion inside the smooth bushes;

the threaded bushes having threads formed on inner side surface, engaged by helical teeth on the inner rods;

adjusting frame seats each including a shell body, with one vertical and one horizontal bevel gear in mesh with each other and mounted therein;

central portions of the vertical bevel gears are connected with a link shaft rod and one engageable with an external rotating handle bar, the adjusting frame seats at a top end of the inner rods with the helical teeth; and

the horizontal bevel gear connected with the inner rods with the helical teeth.