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:
Sep. 02, 2003
Filed:
Sep. 15, 2000
Masanori Sogo, Osaka-fu, JP;
Makoto Sasaki, Osaka-fu, JP;
Komatsu Limited, Tokyo, JP;
Abstract
The invention provides a supporting mechanism of a slide door in which a lower end rail portion being most easily dirty in a slide door opening and closing portion is hardly get dirty and an operation can be smoothly and without being shaky performed even when a great load is locally applied to the slide door at a time of moving the slide door. The supporting mechanism of the slide door has upper and lower rails extending along edge portions of upper and lower ends of the entrance/exit and guide rollers respectively provided at least in upper and lower end portions of a front edge of the slide door. The lower rail is constituted by one narrow plate rail having a lower end edge being a free end, the lower guide rollers include a set of two or more rolling rollers, and the set of two or more rolling rollers hold and support the lower rail therebetween from below so as to freely roll. Accordingly, even when a local external force is applied at a time of opening and closing the slide door so as to generate a little deformation, it is possible to smoothly open and close the door without being shaky. Further, since a portion where the lower rail is placed has no room where the earth and sand are accumulated, the rail is not clogged by the earth and sand after a long time use, so that it is possible to secure a smooth opening and closing operation.