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.:
Date of Patent:
Feb. 27, 2001
Filed:
Sep. 03, 1998
Shuzo Nishino, Kawanishi, JP;
Daifuku Co., Ltd., Osaka, JP;
Abstract
A proximity sensor (,), which generates an alternating current magnetic field in the direction of a guide rail (B) and detects a detection object by a loss of energy caused by a current which this alternating current magnetic field generates to flow to the detection object, is provided at the front end of each transport mover (V); a rear-end collision prevention detection plate (,), which enters between the guide rail (B) and the proximity sensor (,), is provided at the rear end of each transport mover (V); and a stopping device (W), which faces toward the proximity sensor (,) and forms a resonant circuit resonating at the generation frequency of the proximity sensor (,), is provided at a mover stopping location on the guide rail (B).