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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.

Patent No.:

US 11964851 B1

PDFFull Text
Date of Patent:
Apr. 23, 2024

Filed:

Nov. 06, 2020

Overhead hoist transfer apparatus

Applicant:

Mirle Automation Corporation, Hsinchu, TW;

Inventors:

Houng Sun, Hsinchu, TW;

Cheng-Cheng Lo, Hsinchu, TW;

Chuan-Ming Chung, Hsinchu, TW;

Assignee:

MIRLE AUTOMATION CORPORATION, Hsinchu, TW;

Attorney:

Li & Cai Intellectual Property (USA) Office

Primary Examiner:

Scott A Browne

Int. Cl.
CPC ...
B66C 19/00 (2006.01); B65G 43/08 (2006.01); B66C 7/08 (2006.01); B66C 7/12 (2006.01); B66C 9/04 (2006.01); B66C 11/00 (2006.01); G08C 17/02 (2006.01); H01L 21/67 (2006.01); H01L 21/677 (2006.01);
U.S. Cl.
CPC ...
B66C 19/00 (2013.01); B65G 43/08 (2013.01); B66C 7/08 (2013.01); B66C 7/12 (2013.01); B66C 9/04 (2013.01); B66C 11/00 (2013.01); G08C 17/02 (2013.01); H01L 21/67259 (2013.01); H01L 21/67706 (2013.01); H01L 21/67724 (2013.01); H01L 21/67733 (2013.01); B65G 2203/0283 (2013.01); B66C 2700/018 (2013.01);
Abstract

An overhead hoist transfer (OHT) apparatus and a differential overhead trolley thereof are provided. The OHT apparatus includes a rail module and a differential overhead trolley. The rail module includes a main rail and a first rail, and defines a turning path extending from the main rail to the first rail. The differential overhead trolley is movably disposed on the rail module, and includes a walking mechanism and a carrying body that is hung on the rail module by being connected to the walking mechanism. The walking mechanism includes two differential wheels and a driving unit that is connected to the two differential wheels. When the differential overhead trolley is moved along the turning path, the driving unit is configured to drive the two differential wheels to move along the first rail by different rolling velocities.

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