Telescopic leg structure of a table

• US 7,293,510 B1
• Filed: 09/20/2006
• Issued: 11/13/2007
• Est. Priority Date: 09/20/2006
• Status: Expired due to Fees

• Current Assignee: Chingdar Enterprise Co., Ltd.
• Original Assignee: Chingdar Enterprise Co., Ltd.
• Inventors: Siao, Jhen-Siang Wei
• Primary Examiner(s): Chen; Jose V.
• Application Number:
  US11/523,520
• Time in Patent Office: 419 Days
• Field of Search: 108/147.19, 108/144.11, 108/147.11, 248/188.5, 248/188.2, 248/188.8, 248/188.4, 248/161
• US Class Current: 108/147.19
• CPC Class Codes: A47B 9/20 Telescopic guides

Abstract

A telescopic leg of a table consists of an outer tubular member, and an inner tubular member inserted in the outer tubular member; the outer tubular member is coupled to a top of a table, and has a bolt hole; the inner tubular member has a flat pressed side facing the bolt hole of the outer tubular member; a fixing bolt is passed through the bolt hole of the outer tubular member; the fixing bolt will closely touch the inner tubular member at a tail end thereof as well as making the inner tubular member tightly pressed against an inner side of the outer tubular member when it is turned tight; contact area between the fixing bolt and the inner tubular member is planar, and contact area between the inner tubular member and the inner side of the outer tubular member is also planar after the bolt is turned tight.

Claims

1. An improvement on a telescopic leg of a table, comprising

an outer tubular member coupled to a top of a table, the outer tubular member having a bolt hole, and two first internal protruding portions formed on opposing sides of the bolt hole with first fitting spaces being disposed between the first internal protruding portions and the bolt hole;

an inner tubular member being inserted in the outer tubular member and being displaceable therein, the inner tubular member having two second fitting spaces on an outer side thereof and in which the first internal protruding portions of the outer tubular member are respectfully fitted, the inner tubular member having two second protruding portions on an outer side thereof respectively adjacent to the second fitting spaces, the second protruding portions being fitted in the first fitting spaces of the outer tubular member; and

a fixing bolt threadedly engaged with the bolt hole of the outer tubular member and passed therethrough, the fixing bolt being tightened to engage the inner tubular member and thereby force the second protruding portions to be tightly pressed against the first protruding portions for securement of the inner tubular member in a selected position relative to the outer tubular member.

2. The improvement on a telescopic leg of a table as recited in claim 1, wherein the outer tubular member is cylindrical.

3. The improvement on a telescopic leg of a table as recited in claim 1, wherein the bolt hole is formed on a lower end of the outer tubular member.

4. The improvement on a telescopic leg of a table as recited in claim 1 further having a base part joined to a lower end of the inner tubular member.

5. The improvement on a telescopic leg of a table as recited in claim 1, wherein the inner tubular member has a flat pressed side facing the bolt hole of the outer tubular member.

6. The improvement on a telescopic leg of a table as recited in claim 1, wherein the outer tubular member is joined to a transverse connecting tubular part at an upper end thereof.

7. The improvement on a telescopic leg of a table as recited in claim 6, wherein the transverse connecting tubular part is coupled to the top of the table by means of connecting elements.