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:
Feb. 20, 2024

Filed:

Dec. 31, 2019
Applicant:

Guangdong Raex Intelligent Technology Co., Ltd., Guangzhou, CN;

Inventors:

Weiping Chen, Guangzhou, CN;

Jinbin Tan, Guangzhou, CN;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A47H 1/08 (2006.01); A47H 3/10 (2006.01); A47H 5/032 (2006.01);
U.S. Cl.
CPC ...
A47H 1/08 (2013.01); A47H 3/10 (2013.01); A47H 5/0325 (2013.01);
Abstract

Provided is an extendable rail, comprising a main rail and an auxiliary rail arranged in parallel with the main rail, the main rail is shifted in longitudinal direction relative to the auxiliary rail, wherein the main rail is configured with a driving wheel and a first reverse wheel; the auxiliary rail is configured with a second reverse wheel, a first guiding wheel and a second guiding wheel arranged inside; a belt loop with fixed length wraps around the driving wheel, the first reverse wheel, the first guiding wheel, the second reverse wheel, the second guiding wheel, and the driving wheel in turn. The total length of the extendable rail can be adjusted according to the practical needs of consumers by adjusting the length of the overlapped area of the main rail and the auxiliary rail, which provides easy adjustment, high universal applicability and operation performance without size customization.


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