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.
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
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.
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.
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.
Smart Images

Figure IMG-2_DRAW_112106979-A0304-14-0001-1 
Figure IMG-2_DRAW_112106979-A0304-14-0002-2 
Figure IMG-2_DRAW_112106979-A0304-14-0002-3