Abstract: A sensor assembly includes a housing, a sensor unit attached to the housing, and a gutter fixed relative to the housing. The sensor unit includes a cylindrical shell defining a vertical axis. The cylindrical shell extends above a highest point of the housing. The cylindrical shell is rotatable around the axis relative to the housing. The cylindrical shell includes a lower edge and extending upward along the axis from the lower edge. The gutter is elongated along the lower edge and positioned directly below the lower edge relative to the axis. The gutter defines an airflow outlet from the housing radially inside the gutter relative to the axis. The sensor unit defines an airflow inlet radially inside the lower edge relative to the axis and positioned to receive airflow from the airflow outlet.

Abstract: An assembly includes a liftgate having a frame and a body panel supported by the frame, the body panel defining a plurality of openings, the openings providing access to the frame. The assembly includes a first cover covering the plurality of openings of the body panel. The assembly includes a second cover supported by the first cover and defining a chamber therebetween. The assembly includes a sensor assembly supported within the chamber between the first cover and the second cover.

Abstract: A sensor apparatus includes a first sensing device, a sensor housing, a bracket, a second sensor, and a channel plate. The sensor housing includes a first sensor window and a top panel, and the first sensing device has a field of view through the first sensor window. The bracket is mounted on top of the top plate. The second sensor is held by the bracket and includes a second sensor window. The channel plate is fixed to the bracket. The bracket includes a first nozzle aimed at the first sensor window and a second nozzle aimed at the second sensor window. The bracket includes a channel fluidly connected to the first nozzle and the second nozzle. The channel plate covers the channel.

Abstract: In a continuous screw conveyor or auger, the rotatable screw member comprises a helical radial blade (“flighting”) carried on a central driving shaft. The flighting is formed by providing a raw metal strip, generally of uniform thickness, performing optional compression and flaring of the metal strip, and rolling the metal strip between a pair of opposed, preferably offset, conical rolls. In contrast to prior art rolls, the present invention provides on at least one of those rolls a stepped conical rolling surface formed so as to exert a lesser and reducing rolling pressure on an outer portion of the helical blade being formed, thereby to produce a blade in which the outer portion tapers to a thickness which is preferably 125% of the thickness of the ingoing material to provide a greater wear resistant surface, a longer working life to the flighting and improved output performance.

Abstract: In a continuous screw conveyor or auger, the rotatable screw member comprises a helical radial blade (“flighting”) carried on a central driving shaft. The flighting is formed by providing a raw metal strip, generally of uniform thickness, performing optional compression and flaring of the metal strip, and rolling the metal strip between a pair of opposed, preferably offset, conical rolls. In contrast to prior art rolls, the present invention provides on at least one of those rolls a stepped conical rolling surface formed so as to exert a lesser and reducing rolling pressure on an outer portion of the helical blade being formed, thereby to produce a blade in which the outer portion tapers to a thickness which is preferably 125% of the thickness of the ingoing material to provide a greater wear resistant surface, a longer working life to the flighting and improved output performance.

Abstract: A drawworks for drilling rigs having an improved dual brake system that divides the drill line load equally between the dual brakes, a more efficient braking action is realized by the provision of radial guide rollers positioned to urge the brake bands into concentric relation respective the brake drums which maximizes contact therebetween and results in more sensitive control of weight on bit. A chain and sprocket drive line includes flingers immersed in lub oil which effectively distributes lub oil throughout the drive line.

Abstract: A drawworks for drilling rigs having an improved dual brake system that divides the drill line load equally between the dual brakes, a more efficient braking action is realized by the provision of radial guide rollers positioned to urge the brake bands into concentric relation respective the brake drums which maximizes contact therebetween and results in more sensitive control of weight on bit. A chain and sprocket drive line includes flingers immersed in lub oil which effectively distributes lub oil throughout the drive line.

Abstract: A system is provided for a step optical printer to detect an out-of-frame condition in the printer projector and/or camera sections. The out-of-frame detector comprises a free wheeling encoder driven by film entering a gate of the printer and a second encoder driven by the printer drive mechanism. A comparator is connected to the outputs of the encoders to detect a lack of correspondence between the length of film entering the gate and the length of film being driven. Such lack of correspondence being indicative of an out-of-frame condition.