3results about "Writing underlays" patented technology

This invention proposes a parallel auxiliary drawing board, comprising a rectangular drawing board with connecting slide rails on all four sides and a ruler whose two ends slide within the slide rails. The ruler is the same length as the long side of the rectangular drawing board. One end of the ruler slides within the slide rail via a first connecting member; the other end of the ruler slides within the slide rail via a second connecting member. Simultaneously, the bottom surface of the ruler has a groove for the second connecting member to slide within. This invention solves the problems of cumbersome and inaccurate operations in drawing horizontal and vertical parallel lines during the drafting process. The ruler's direction can change as it slides on the slide rails, from horizontal to vertical and from vertical to horizontal, reducing the cumbersome operations of changing the ruler's direction and requiring other rulers for drafting assistance, thus improving work efficiency. The track also serves to fix the ruler, ensuring drafting accuracy.

The application discloses a portable multifunctional bulletproof and riot shield, which comprises a shield body, characterized in that the shield body is flat, the back of the shield body is provided with a handle capable of rotating relative to the shield body, and the front of the shield body is provided with a file folder used for clamping paper placed on the front of the shield body; the material of the shield body is ultra-high molecular weight polyethylene, aramid or polyglycolate; and the shield body can be used as a writing pad in daily work and life, and when an emergency occurs, the handle on the back of the shield body can be held to pick up the shield body as a bulletproof or riot protection tool to protect the head and other vital parts and make a counterattack at any time. The application integrates the bulletproof and riot protection function and the writing pad function, has a small size and light weight, is convenient to use and carry, and can be used for bulletproof and riot protection at any time and anywhere in daily work and life.

The application is suitable for the technical field of warning devices, and provides a power equipment warning device, which comprises a support and further comprises: a warning structure, the warning structure comprising a warning board for warning and a moving structure for driving the warning board to move reciprocally; a recording structure, the recording structure comprising a recording board for recording information, the outer side of the recording board being provided with a cover, the cover being used for shielding the recording board from dust, the recording structure further comprising a cleaning brush for cleaning the cover and a lifting assembly for driving the cleaning brush to move. The warning device sets the warning structure to drive the warning board to move reciprocally, can dynamically display the warning board, is vivid and obvious, and has a good effect of safety warning. The recording structure is set, and it is unnecessary to use a separate notebook to record maintenance operation information, the information will not be lost, and the recording structure can wipe off the dust on the cover, avoids affecting the staff from checking the information, and is convenient for the staff to use.