The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Date of Patent:
Mar. 13, 2007

Filed:

Mar. 19, 2004
Applicant:

Chia-ming Wang, Shenkeng Township, Taipei County, TW;

Inventor:

Chia-Ming Wang, Shenkeng Township, Taipei County, TW;

Assignee:

Sallas Industrial Co., Ltd., Taipei County, TW;

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
E04G 3/00 (2006.01);
U.S. Cl.
CPC ...
Abstract

A self-locking support arm is provided, comprising a hang arm and a linked device between a support seat and a connecting seat, which forms a set of four parallel connected rods. Therefore, when the support arm moving up and down, the connecting seat will maintain a fixed angle. A spring device is disposed between the hang arm and the linked device to provide tension of auto homing to the support arm. And, in a rotating joint formed by the linked device and the support seat, a ramp block and a ramp slider block is engaged, to provide an effect of self-locking, and better loading capacity.


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