Abstract: A security barrier includes a horizontal composite beam extending across a roadway is mounted between vertical posts at either end of the beam. Hydraulic cylinders fastened at each beam end and to the vertical posts cause the beam to be raised and lowered, as needed. When the beam is at its lowest position, it allows for the normal flow of traffic over the top of the beam. When the beam is in its fully-raised position, it provides a vehicle barrier thirty-six inches above grade. A hydraulic power unit and components control the direction and speed of beam movement. The security barrier also includes electronic control and monitoring of the beam, and hydraulic system.

Abstract: A fish bite detecting and warning device for alerting a fisher when a fish has been hooked on a fishing line. The device includes a housing with a downwardly extending support shaft for insertion into the ground. The housing has at least one elongate slot therethrough. At least one primary switch is provided in the housing. The primary switch has a pivoting actuating arm which is extended through the slot of the housing. The actuating arm is pivotable between a raised position and a lowered position and is biased towards the lowered position. An outwardly extending guide member is located beneath the slot. The guide member has a plurality of grooves for receiving the fishing line looped beneath the adjacent actuating arm. A computer processor for generating signals is located in the housing and is electrically connected to the primary switch. An alerting light source is provided in the housing and electrically connected to the computer processor.