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. 13, 1983
Filed:
Sep. 03, 1981
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
A flash device of the type in which the flash tube is coated with a trigger electrode and is positioned in contact with the back metal constituting part of the reflector so that when the trigger signal is applied directly to the back metal, the flash tube is triggered. In this type of flash device the back metal constituting part of the reflector is configured to a round shape. Because of the necessity of insuring good light distribution it is generally made of bright alloy aluminum. This not only makes it difficult to finely adjust the position of the flash tube relative to the back metal and electrically connect the trigger wire lead with the back metal, but also gives rise to a problem of electrically insulating the back metal from the other metallic parts since a very high voltage for triggering is applied to the back metal. The present invention provides a flash device which has solved the various problems by providing the back metal with embossed portions to adjust the position of the flash tube, by pressure-setting the connection of the trigger wire lead with the back metal, and by applying an electrically insulating coating on the back surface of the back metal.