TRAY SYSTEM, COVER UNIT AND FASTENER Russian patent published in 2023 - IPC E03F5/06 

FIELD: drainage devices.

SUBSTANCE: tray system (1) comprises at least one frame block (10), at least one cover block (20) and at least one first fastener (30). The frame block (10) has at least one receiving area (12) for positioning the cover block (20). The fastener (30) is designed to engage with the cover block (20) and releasably enter the receiving area (12) to ensure that the cover block (20) closes in the receiving area (12) of the frame block (10). The cover block (20) has at least one receiving opening (22) for accommodating and guiding the movement of at least one fastener (30). To accommodate and direct the movement of the fastener (30), at least one support element (26) is located in at least one receiving hole (22), and the fastener (30) has at least one support groove (36) made respectively to the support element (26). The support element (26) has a safety device (26.1) at its longitudinal end against falling out, which ensures the connection of the fastener (30) and the cover block (20) with force and/or positive lock without the possibility of their unintentional separation. The cover block (20) for use in the tray system (1) described above has at least one receiving opening (22) for receiving and guiding movement of at least one fastener (30). The fastener (30) is designed for use with the tray system (1) described above and/or with the cover block (20) described above.

EFFECT: provision of a tray system, which is easy to manufacture, which allows to optimize the connection of the grating or cover block with different types of frame units, which allows easy installation on site, and which provides easy maintenance and protection against theft.

13 cl, 4 dwg