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. 29, 1977
Filed:
Mar. 18, 1977
Seiji Hayamizu, Koshigaya, JA;
Senoh Kabushiki Kaisha, Tokyo, JA;
Abstract
An arrangement for fastening an upstanding post in a floorboard for use in indoor sports comprises a hollow cylindrical support into which the post loosely fits, having an opening provided in the circumferential wall thereof, the cylindrical support being embedded below the floorboard, a guide box which covers the opening in the cylindrical support, a headed screw rod rotatably supported in a vertical fashion in the guide box, a first wedge member screw-threadedly receiving the screw rod so that it may move upwards or downwards, a second wedge member received in the opening of the guide box so that it may move in the radial direction of the cylindrical support in accordance with the movement of the first wedge, a hole provided through the floorboard aligned in a vertical plane with the screw rod. When a tool for turning the screw rod is inserted through the hole and rotated, the rotation of the screw rod in accordance with continuous rotation of the tool in a horizontal plane causes the first wedge member to move upwards or downwards, and thereby the second wedge member moves in the radial direction of the cylindrical member to securely fasten the post within the cylindrical support.