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. 30, 1999
Filed:
Oct. 08, 1998
Yoshihiro Kaneko, Tokyo, JP;
MAX Co., Ltd., Tokyo, JP;
Abstract
The present invention supplies a drilling screw which can fix a gypsum board to a thin steel plate by utilizing an impact-type air driven screw fastener and execution method for fixing efficiently the gypsum board to the thin steel plate. The drilling screw 11 comprising the parallel thread part 13 and the smaller diameter parallel thread part 15 which are connected through the taper thread part 14. The height of thread crest of the smaller diameter parallel thread part 15 is as small as about 0.1 mm. The taper bit 16 is formed at the fore end of the smaller diameter parallel thread part 15. When the drilling screw 11 is hammered into the gypsum board and the C-type steel plate structural material with the impact-type air driven screw fastener, the smaller diameter parallel thread part 15 is inserted through the steel plate. Since the smaller diameter parallel thread part 15 has so small diameter, the steel plate is seldom deformed. The small-sized thread crest provided at the smaller parallel thread part 15 generates driving force in the inserting direction of the screw upon its rotation so that the parallel thread part 13 is screwed into the steel plate, resulting in fixation of the gypsum board and the C-type steel plate structural material.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile