Abstract: A drilling apparatus includes an attachment box configured to couple to a machine tool. The drilling apparatus facilitates formation of a hole in a workpiece with workpiece structure that results in a large offset distance from a start location of the hole to the machine tool, restricted access to the start location, or both. The drilling apparatus includes a bearing housing coupled to the attachment box. The bearing housing includes a pair of bearings. The drilling apparatus includes a shaft position through the bearing housing to couple to the bearings. The shaft includes an end effector interface configured to couple to one or more end effectors of the machine tool at a first end of the shaft. The shaft includes a tool interface configured to couple to a tool at a second end of the shaft. The drilling apparatus also includes an offset foot coupled to the bearing housing.

Abstract: A confined space entry device and/or fall arrester for use in securing a person working at elevation, the device including modularized components which allow it to be readily reconfigured. In particular, the extension arm of the device is removably secured to one end of an elbow, the other end of which is removably secured to a post or mast which is securely anchored, for example, to a base. The device can include arms and elbows of different configurations and lengths for various applications in the field.

Abstract: A confined space entry device and/or fall arrester for use in securing a person working at elevation, the device including modularized components which allow it to be readily reconfigured. In particular, the extension arm of the device is removably secured to one end of an elbow, the other end of which is removably secured to a post or mast which is securely anchored, for example, to a base. The device can include arms and elbows of different configurations and lengths for various applications in the field.

Abstract: An emulsion suitable for imparting oil and water repellency to substrates comprised of a major proportion of chlorinated alkane solvent and minor proportions of finely-dispersed fluoroalkyl polymer, water, and a nonionic surfactant of the polyoxyethylene adduct type having an HLB value of at least 8.

Abstract: A fire-resistant, water- and oil-repellent nonwoven fabric is prepared using a fire-retardant, surfactant-free adhesive/binder containing halogen and/or phosphorus additive, followed by treatment with a fluorochemical repellent agent.