Abstract: An LED lamp has a housing and a plurality of light-emitting diodes (LEDs) arranged to form two different LED arrays. The housing has a pair of openings on opposite sides. Each of the LED arrays corresponds to a different one of the openings of the housing such that at least a portion of each of the LED arrays is exposed through the corresponding opening.

Abstract: A controllable bidirectional torque limiting device for driving a machine element. The input shaft is connected to a driver and the output shaft is connected to the machine element. The clutch mode of operation provides an adjustably limited torque output which rotates the machine element; the braking mode of operation provides an adjustable braking torque capable of stopping the rotating machine element upon cessation of the torque transmission. The assembly provides driving or braking actions as required. The device comprises a rotor, circular brake pad and two spaced apart pistons. Compressed air is introduced through a port in the bearing housing and is entrapped inside the piston cylinder walls. The resultant pressure exerts a force on the piston, causing the rotor to be pressed against the brake disc in the braking mode of operation, the amount of air pressure controlling the braking force. A plurality of steel balls are positioned between a pair of discs made of resilient material.