A remotely-controllable self-cleaning roof gutter preferably has a selectively inflatable and deflatable bladder extending longitudinally along the interior of the roof gutter. The bladder has an interior chamber connected to a fluid conduit which extends downwardly from the gutter so that the inflation or deflation of the bladder can be controlled manually by a person standing on the ground. When the gutter is to be cleaned, the normally deflated bladder is inflated by introducing pressurized f...

A Snubber is used to damp the swing of the door on an excavator bucket to prevent the door form being damaged by repeatedly slamming shut. The snubber has housing which mounts to an excavator bucket and a shaft pivotally mounted in the housing and connected to an excavator door. The shaft turns when the excavator door opens. The housing has a cylindrical cavity around the shaft. The cavity is divided into two volumes by a dam and a wiper arm on the shaft. The wiper arm forces hydraulic fluid to ...

A probe station for probing a test device has a chuck assembly substantially enclosed by an environment control enclosure and laterally movable relative to such enclosure. The environment control enclosure includes a flexible wall assembly interconnected with the chuck assembly to enable such lateral movement thereof along mutually perpendicular directions while maintaining the integrity of the enclosure. The flexible wall assembly has flexible pleats formed therein extending along respective di...

A load clamp has two selectively openable and closable opposing clamping assemblies, one of which comprises at least a pair of clamp arms movable separately from each other toward and away from the other clamping assembly. Separate actuators for the respective clamp arms are controlled automatically by a regulator in such a way that the respective closure movements of the arms are simultaneous. A selective adjuster assembly enables the operator to select alternate different maximum magnitudes of...

A matrix-addressed AC TFEL panel includes odd- and even-numbered scanning electrodes driven from opposite sides of the panel by separate power supplies. The data electrodes are divided into top and bottom sets so that they are arranged as complementary pairs extending towards each other slightly less than halfway across the screen leaving a small gap in the middle. The odd- and even-numbered scanning electrodes are divided into top and bottom subsets so that the top and bottom halves of the pane...

An electrode configuration for reducing contact density in matrix-addressed display panels includes a first set of electrodes having termination points for connection to external driving electronics situated near the edge of a supporting substrate, and a second set of electrodes alternately interleaved among said first set having termination points spaced inwardly from the substrate's edge. An insulating film covers the termination points of the second plurality of electrodes and bond pads place...

A test fixture to expedite the testing of the resiliency of cylindrical samples including asphalt materials. The test fixture includes a frame assembly having opposed side members for engaging the curved surface of the sample whereupon at least one transducer detects changes in displacement between the side members upon diametric deflection of the sample. Additionally, or alternatively, the test fixture includes a retaining mechanism and positioning mechanism. Upon initial alignment of the test ...

An electrical connector assembly for facilitating connection between interchangeable input/output cables and a high-density arrangement of traces on a circuit board inside a mainframe computer. The assembly comprises a collection of individual connector/terminal assemblies and individual flexible conductive elements, such assemblies and elements being specially formed and relationally positioned so as to optimize serviceability, high frequency performance, systematic routing capability and densi...

A waveguide configuration have a longitudinal ridge directly opposing a longitudinal trough. The ridge provides broadband signal transmission characteristics of ridge waveguides and may extend within the trough to result in a virtually horizontal electric field configuration.

A club head cover and a tag attached thereto for identifying a covered golf club. Multiple label plates are contained in face-to-face arrangement within a label plate holder defining a window through which a label located on one side of the label plates is displayed. The label plates are releasably latched into the holder and are symmetrically shaped to permit placement into the holder with either face directed toward the window, so that either side of the label plate can be displayed.