Protective cover

The protective cover for power rotary tools addresses the issue of indentations on lightweight ceilings by distributing pressure through a cylindrical design with recesses and protrusions, ensuring aesthetic integrity and efficient operation.

TWI931649BActive Publication Date: 2026-07-11YOSHINO GYPSUM CO LTD
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Patent Information

Application Number
TW112106979
Authority / Receiving Office
TW · TW
Patent Type
Patents
Current Assignee / Owner
Priority Date
2022-03-04
Filing Date
2023-02-24
Publication Date
2026-07-11
Estimated Expiration
2043-02-23

AI Technical Summary

Technical Problem

Existing methods for securing lightweight, flexible plate-like structures such as ceilings using power screwdrivers often result in unsightly circular or arc-shaped indentations due to over-tightening or tilting, which are noticeable under oblique lighting and hinder efficient working speed.

Method used

A protective cover for power rotary tools featuring a cylindrical shape with a through hole, upper surface recesses and protrusions, and a chamfered corner, designed to distribute pressure and prevent direct contact with the plate-like surface, thereby suppressing the formation of indentations.

Benefits of technology

The protective cover effectively prevents the formation of circular or arc-shaped depressions on plate-like surfaces during screw tightening, maintaining aesthetic appeal and enhancing working efficiency by reducing the risk of noticeable indentations.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure IMG-2_DRAW_112106979-A0304-14-0001-1
    Figure IMG-2_DRAW_112106979-A0304-14-0001-1
  • Figure IMG-2_DRAW_112106979-A0304-14-0002-2
    Figure IMG-2_DRAW_112106979-A0304-14-0002-2
  • Figure IMG-2_DRAW_112106979-A0304-14-0002-3
    Figure IMG-2_DRAW_112106979-A0304-14-0002-3
Patent Text Reader

Abstract

A protective cover for mounting on a power rotary tool for tightening screws, wherein the protective cover has an upper surface and a lower surface, and a through hole penetrating between the upper and lower surfaces, and the upper surface has a recess and a protrusion.
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