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. 12, 1985
Filed:
Nov. 24, 1981
Applicant:
Inventor:
Takao Wakabayashi, Toyonaka, JP;
Assignee:
Nakanishi Metal Works Co., Ltd., Osaka, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
E01B / ;
U.S. Cl.
CPC ...
104 96 ; 104103 ; 104130 ; 1041 / ;
Abstract
A first free line composed of two rails arranged in parallel in a substantially horizontal plane is joined to a second free line composed of two rails arranged in parallel in the substantially horizontal plane. A switch rail pivotally movable in the substantially horizontal plane is provided at each of the junctions where the rails of the first free line are joined to the rails of the second free line in corresponding relation. Another switch rail pivotally movable in the substantially horizontal plane is provided at a cutout portion formed in the intersection of one of the first free line rails with one of the second free line rails.