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:
Nov. 14, 1978
Filed:
Jul. 26, 1976
Nippon Kokan Kabushiki Kaisha, Tokyo, JP;
Fuji Toyuki Kabushiki Kaisha, Takamatso, JP;
Abstract
A transportation arrangement with spotlight projectors for illuminating the trunnions of a molten iron ladle for viewing by an operator when engaging a hoisting hook with the trunnion of the ladle. A spotlight projector employs a very high pressure mercury lamp as a light source and the beam of light from this light source is projected in the form of a bundle of parallel light rays of specific wavelengths through a collimator lens system. This system employs an elliptic reflecting mirror, a slit, a filter for transmitting specific wavelengths and a convex lens. The projected bundle of parallel light rays consists of a group of green and yellow bright-line spectra having a center wavelength of 5,000 A. The projector is designed to be mounted on an overhead travelling crane and its projection optical axis is adjustable.