Leg support structure of computer desk capable of synchronous sliding movement

• US 7,322,656 B2
• Filed: 09/24/2004
• Issued: 01/29/2008
• Est. Priority Date: 09/24/2004
• Status: Expired due to Fees

• Current Assignee: Chih Chiang Wang
• Original Assignee: Chih Chiang Wang
• Inventors: Wang, Chih Chiang
• Primary Examiner(s): MCPARTLIN, SARAH BURNHAM
• Application Number:
  US10/948,810
• Publication Number:
  US 20060071530A1
• Time in Patent Office: 1,222 Days
• Field of Search: 297/423.19, 297/423.41, 248/299.1, 248/918, 248/118, 312/208.1, 312/271, 312/273, 312/323, 312/223.3, 108/92, 108/93, 108/102, 108/106, 108/138, 108/193, 108/50.01, 108/50.02
• US Class Current: 297/423.41
• CPC Class Codes: A47B 21/0314 Platforms for supporting office equipment
• CPC Class Codes: A47B 2200/0097 Foot rest being part of desk

Abstract

The present invention provides a leg support structure of a computer desk capable of synchronous sliding movement, comprising a stand, a leg pad, two L-shaped prop stands and two sliding collars. The stand is formed into an inverse U-shape, and the leg pad is formed into a planar configuration. The leg pad comprises a lower pivot opening and an upper pivot opening formed on both sides of the leg pad, wherein the locations of the lower openings and the upper pivot openings are corresponding to positions of a lower pivot and two L-shaped prop stands. The lower pivot is positioned though the lower pivots openings of the leg pad in order to pivot to a support located at a center of the two arcing grooves. The L-shaped prop stands, the two sliding collars, the pulley and a slider are engaged in such that various elevation changes can be achieved.

Claims

1. A leg support structure of a computer desk capable of synchronous sliding movement, comprising:

a stand having an inverse U-shape, wherein the stand comprises an arcing groove formed at each midsection of two suspending portions thereof;

a leg pad having a planar configuration, wherein the leg pad comprises a lower pivot opening and an upper pivot opening formed on each lateral side of the leg pad, a lower pivot is positioned through the lower pivot openings of the leg pad in order to pivot the leg pad about a support located at a center of the two arcing grooves;

two L-shaped prop stands, each having a horizontal side and a vertical side, wherein the horizontal sides of the two L-shaped prop stands are engaged to an underside of a top portion of the stand by a retaining sleeve, the horizontal sides are joined to a slider at ends thereof for a placement of a keyboard ; and

two sliding collars having outer portions, each engaged over the vertical sides of the two L-shaped prop stands, wherein holes are formed at the outer portions of the sliding collars, an upper pivot passes through each of said holes to join with a pulley and then subsequently through a corresponding one of the upper pivot openings to pivot the two sliding collars to the upper pivot openings of the leg pad;

whereby outward sliding movement of the slider upon experiencing an external force actuates the L-shaped prop stands to cause movement of the sliding collars and to cause the pulley to slide downwards in the arcing grooves, subjecting the leg pad to be overturned and extended.

2. The leg support structure of a computer desk capable of synchronous sliding movement of claim 1, wherein the stand is provided on a top thereof with plural retaining holes through which plural fasteners pass to join to an underside of a desktop.

3. The leg support structure of a computer desk capable of synchronous sliding movement of claim 1, wherein a plurality of leg parts are formed at bottom portions of the two suspending portions of the stand so that the leg supporting structure can be placed directly underneath a desktop without being attached or connected to undersides of the desktop.