Abstract: A system and method of detecting a disturbance of a buried structure, for example an intrusion or a leak from a pipeline. Sensing devices at discrete locations connect with a backbone cable extending along a length of the pipeline. In the event of a leak, the signal from a sensing device is received at an output, via the backbone cable, providing notification of the leak and the location of the leak.

Abstract: A lockable articulated joint comprises a first member having a ball shaped attachment further having a recess on its periphery. A rotationally symmetric conforming plunger is for movably nesting into the recess. A second member pivotally receives the ball shaped attachment and comprises a plunger holding portion. User alignment of the recess with the plunger holding portion allows configuring the joint in one of at least two selectable locked positions. The articulated joint is usable in a multi-axis articulated implement, in which one member is an elongated end effecter having a working face and the other member is an elongated handle portion. A user may configure the implement in various locked attitudes, wherein a working face's longitudinal axis extends parallel or perpendicular to the handle, or wherein the working face's normal axis extends parallel to the handle. The implement may be embodied into a multi-axis snow brush.

Abstract: A lockable articulated joint comprises a first member having a ball shaped attachment further having a recess on its periphery. A rotationally symmetric conforming plunger is for movably nesting into the recess. A second member pivotally receives the ball shaped attachment and comprises a plunger holding portion. User alignment of the recess with the plunger holding portion allows configuring the joint in one of at least two selectable locked positions. The articulated joint is usable in a multi-axis articulated implement, in which one member is an elongated end effecter having a working face and the other member is an elongated handle portion. A user may configure the implement in various locked attitudes, wherein a working face's longitudinal axis extends parallel or perpendicular to the handle, or wherein the working face's normal axis extends parallel to the handle. The implement may be embodied into a multi-axis snow brush.

Abstract: The dry printing apparatus comprises a housing defining a handle portion, a dry printing unit mounted to an open lower end of the housing, an air convection passage, and a guide member. The air convection passage extends through a space between the dry printing unit and side walls of the housing as well as through openings in a top wall of this housing. Convection air flows through the air convection passage to prevent the handle portion from being heated by the dry printing unit. The guide member is telescopically mounted in the open lower end of the housing between extended and retracted positions and is spring-biased toward the extended position. In operation, the guide member is applied to the surface to be dry printed and pressure is manually applied to the handle portion to telescopically move the housing and dry printing unit about the guide member until the dry printing unit reaches the surface to be dry printed.