Abstract: Main bars end intersecting cross bars each have mated slots in their aligned edges. Deformable pairs of arms on one of the sets set of bars are crimped into openings in the other set of bars at the bar intersections to hold the bars together and make a strong and attractive grating.

Abstract: Main bars and cross bars have mated slots. Deformable arms on one set of bars are crimped into openings in the other set of bars at the bar intersections to hold the bars together and make a strong attractive grating.

Abstract: A structural glass panel railing includes glass panels supported on a floor by a base assembly including a railing support assembly. The railing support assembly includes a shoe fastened to the floor, a base member locked to the shoe by a cam lock lever and a channel member having a pocket receiving the panel. The base member may be attached directly to the floor. The channel member is received in a groove of the base member and is held by a wedge system. The wedge system can be formed by mating tapers on the channel member and the groove or by a wedge member inserted into the groove. A handrail assembly includes a handrail channel member receiving the top edge of the panel. The handrail channel member is received in a groove in a handrail.

Abstract: A structural glass panel railing includes glass panels supported on a floor by a base assembly including a railing support assembly. The railing support assembly includes a shoe fastened to the floor, a base member locked to the shoe by a cam lock lever and a channel member having a pocket receiving the panel. The base member may be attached directly to the floor. The channel member is received in a groove of the base member and is held by a wedge system. The wedge system can be formed by mating tapers on the channel member and the groove or by a wedge member inserted into the groove. A handrail assembly includes a handrail channel member receiving the top edge of the panel. The handrail channel member is received in a groove in a handrail.

Abstract: A structural glass panel railing includes glass panels supported on a floor by a base assembly including a railing support assembly. the railing support assembly includes a shoe fastened t the floor, a base member locked to the shoe by a cam lock lever and a wedge member having a pocket receiving the panel. The wedge member is received in a channel of the base member and is held by a wedge action. A handrail assembly includes a handrail wedge member receiving the top edge of the panel. The handrail wedge member is received in a channel in a rail.

Abstract: A waterjet head is tilted relative to vertical in order that the edge of a cut made by the head when severing a part from a workpiece is perpendicular to the workpiece surface, or is oriented at another desired inclination. As the waterjet head is moved along a cutting path over the workpiece, the plane in which the waterjet head is tilted is maintained at a constant bevel control angle relative to the direction of movement of the waterjet head. The waterjet head together with a tilt control assembly is carried by a support that is moved by a CNC controlled three axis drive system. The tilt control assembly includes provision for adjustably tilting the waterjet head and for rotating the waterjet head to maintain the bevel control angle as the direction of waterjet head movement changes.

Abstract: A structural glass panel railing includes glass panels supported on a floor by a base assembly including a railing support assembly. The railing support assembly includes a shoe fastened to the floor, a base member locked to the shoe by a cam lock lever and a channel member having a pocket receiving the panel. The base member may be attached directly to the floor. The channel member is received in a groove of the base member and is held by a wedge system. The wedge system can be formed by mating tapers on the channel member and the groove or by a wedge member inserted into the groove. A handrail assembly includes a handrail channel member receiving the top edge of the panel. The handrail channel member is received in a groove in a handrail.

Abstract: A workpiece surface is treated in a cleaning, polishing or milling or similar surface treatment operation by a waterjet head. The head is located near the workpiece surface with its axis intersecting the workpiece surface and is held so that it dies not rotate about its axis. The waterjet head is driven so that its axis rapidly and repetitively moves in a closed path. The waterjet head is mounted in an eccentric member and the closed path is a surface of revolution. In one arrangement, the closed path described by the axis of the waterjet head is a circular cylinder. In another arrangement, the waterjet head is pivotally mounted and resiliently supported so that the closed path is conical.

Abstract: A motion stabilizer for yieldingly urging a relatively movable load member toward a normal or centered position relative to another load member includes a telescoping body that shortens (retracts) as the load members move toward one another and lengthens (extends) as the load members move apart. A reaction unit is mounted within an axially extending internal chamber defined within the body. The reaction unit has a normal length and a displaced length. The reaction unit may include a spring such as a gas spring or coil spring, and the spring may operate in compression or in expansion. The reaction unit may provide damping. Depending of the characteristics of the reaction unit, the displaced length may be either longer or shorter than the normal length.

Abstract: A system for centering a relatively movable member relative to a relatively fixed member includes telescoped inner and outer cap tubes with opposed closed ends adapted to be connected to the fixed and movable members. A strut tube assembly within the cap tubes includes a gas spring unit that is compressed by a force transfer tube assembly when the system is compressed or extended. Resilient bumpers smooth the force transition near the centered position. A set screw permits adjustment of the system to have preload or no preload or to have free play at the centered position. The system is easily adapted to specific requirements by selection of the gas spring unit and the material of the bumpers and by adjustment of the set screw.

Abstract: A waterjet head is resiliently supported at one location along its axis and is pivotally supported at another, axially spaced location. The head is driven in a pivoting, oscillating manner by a drive system including a rotary motor and an eccentric. The outlet nozzle of the waterjet head pivots in an orbital path so that the UHP liquid or liquid/abrasive stream discharged from the nozzle describes an orbital path on an adjacent workpiece surface, enabling the stream to carry out a uniform surface treatment operation such as cleaning, polishing or milling without damaging the workpiece surface.

Abstract: A preassembled platform stairway for installation between an upper floor and an adjacent lower floor. The stairway includes a bulkhead, an upper run of stairs, a lower run of stairs, and a landing. The top of the upper run of stairs is pivotally connected to the bulkhead, the bottom of the upper run of stairs is pivotally connected to the landing and the top of the lower run of stairs is pivotally connected to the landing side-by-side with the upper run of stairs. The pivotal connections permit the stairway to collapse in a compact configuration for transport and storage. The stairway may be lifted and then lowered into place for installation. When lifted, the stairway assumes an expanded position with the runs of stairs extending angularly from the landing and bulkhead, and hangers suspend the landing below the bulkhead.

Abstract: A handrail system for suspending a handrail spaced from a supporting structure such as a wall with internal clamping brackets providing a trim appearance. The handrail system includes an elongated generally cylindrical rail body having a tubular wall of generally uniform wall thickness surrounding a hollow interior region. Slots are formed in the tubular wall along a line parallel with the rail axis. A rail support assembly connects each slot to the supporting structure. Each rail support structure includes a pair of similar stamped and formed metal brackets. Each bracket includes a flat body and an arm of reduced size extending from the body at an angle and defining a pair of rail engaging shoulders on the body. The arms are inserted through a slot into generally side-by-side relation within the hollow interior region with the shoulders extending beyond the slots.