Light barrier for use in e.g. high-speed run gate, has holder with four-link edge that is placed in closing unit that forms closing edge, where closing unit is closing section with hollow space

摘要

The barrier has a transmitter (22) and/or a receiver (23) which are movably fastened in an area of a closing edge, and a holder (104) including a four-link edge. The four-link edge is placed in a closing unit that forms the closing edge, where the closing unit is a closing section with a hollow space. The four-link chain has two links connected with the closing edge and a third link that flexibly couples the links with each other. Independent claims are also included for the following: (1) a closing unit for a gate with a light barrier (2) a gate e.g. high-speed run gate, with a gate leaf.