Abstract: A chemical vapor deposition system for coating one or more workpieces is described herein. The deposition system includes a plurality of processing chambers which may be operated independently to increase throughput of the deposition system. Each chamber includes a modular fixture that is configured to maintain the workpieces in a predetermined arrangement which allows for a hollow cathode effect to be maintained in an Interior space of the chamber. The deposition system achieves significantly faster, higher-quality deposition and more complete, conformal coverage.

Abstract: Rapid plasma nitriding is achieved by harnessing the power and increased density of plasma discharges created by hollow cathodes. When opposing surfaces are maintained at the proper voltage, sub atmospheric pressure, and spacing, a phenomenon known as the hollow cathode effect creates additional hot oscillating electrons capable of multiple ionization events thereby increasing the number of ions and electrons per unit volume (plasma density). The present invention describes the harnessing of this phenomenon to rapidly plasma nitride metal surfaces and optionally rapidly deposit functional coatings in a continuous operation for duplex coatings.

Abstract: Breather valves featuring magnets that allow very rapid flow. Such flow is accomplished by a valve housing enclosing a hollow interior portion containing a stationary member including a magnet and a pressure-movable poppet disposed in sealing arrangement with the housing and including a magnet. Additionally, and a return force member, such as a magnet or spring, between and coupled to the cover of the housing and the pressure movable poppet may be incorporated into the breather valve. The magnets are substantially centrally disposed in relation to the stationary member and pressure-moveable poppet and are configured such that the breather valve stays closed until an air pressure overcomes an attraction force between the magnets, thereby opening the valve.

Abstract: A wheel chair lift device includes a pair of hydraulic cylinders for elevating a lift car above a base resting on the floor. Pivotally-connected floor struts extend between side walls of the lift car to support the lift car floor while allowing the side walls of the lift car to remain vertical to avoid pinching the gates of the lift car.

Abstract: A wheel chair lift device includes a base, a lift car, and a lift mechanism for raising and lowering the lift car relative to the base. A maximum height system includes a light source, optical sensor, magnetic-backed reflector, and a placement tool for engaging a reference port on the lift car. Operation of the light source and optical sensor are confirmed before the lift car is elevated.

Abstract: Breather valve assemblies featuring resilient, deformable members that buckle when a pressure-moveable member is actuated by pressure, such as when a sealed container is exposed to changes in atmospheric pressure. One way and two way breather valves allow air flow in either one or two desired directions according to resilient, deformable member and pressure movable member of each respective direction.

Abstract: A wheel chair lift device includes a pair of upside-down, vertically-oriented hydraulic cylinders having their closed ends attached to opposing sides of a lift car, and their piston rods secured to a base resting on the floor. The cylinders extend into the hollow internal channels of two fixed vertical guide members as the lift car is lowered. The vertical guide members may be received within the side walls of the lift car as the lift is lowered to the ground. Rollers on the lift car engage the vertical exterior walls of the vertical guide members to stabilize the lift car. No moving parts are exposed apart from the lift car itself.

Abstract: A portable wheel chair lift device includes a lift car, a support base, and a lifting mechanism coupled thereto to selectively raise or lower the lift car while allowing the floor of the lift car to be fully-lowered to the ground surface. The lift car floor can be folded and collapsed to a reduced width allowing transport through narrow passages. Transport casters are removably mounted to the bottom of the lift car to facilitate transport. The lift device includes a height adjustment control within the lift car to repeatably raise the lift car to the height of a stage.

Abstract: A wheel chair lift device includes a base, a lift car, and a lift mechanism for raising and lowering the lift car relative to the base. A maximum height system includes a light source, optical sensor, magnetic-backed reflector, and a placement tool for engaging a reference port on the lift car. Operation of the light source and optical sensor are confirmed before the lift car is elevated.

Abstract: A wheel chair lift device includes a pair of upside-down, vertically-oriented hydraulic cylinders having their closed ends attached to opposing sides of a lift car, and their piston rods secured to a base resting on the floor. The cylinders extend into the hollow internal channels of two fixed vertical guide members as the lift car is lowered. The vertical guide members may be received within the side walls of the lift car as the lift is lowered to the ground. Rollers on the lift car engage the vertical exterior walls of the vertical guide members to stabilize the lift car. No moving parts are exposed apart from the lift car itself.

Abstract: A wheel chair lift device includes a pair of hydraulic cylinders for elevating a lift car above a base resting on the floor. Pivotally-connected floor struts extend between side walls of the lift car to support the lift car floor while allowing the side walls of the lift car to remain vertical to avoid pinching the gates of the lift car.

Abstract: A wheel chair lift device includes a lift car selectively elevated above a base, along with protective skirting covering the region below the lift car. Exposed portions of the protective skirting subject to lateral inward deformation are provided with skirt deformation sensors for detecting abnormal inward deformation of such skirt portions. The skirt deformation sensors include a spring or other elongated deformable member that extends generally parallel and proximate to the portion of the skirt being sensed. A sensor detects that the elongated member has been laterally displaced from its usual longitudinal axis and generates an electrical signal. In response to such electrical signal, the lift device stops further movement of the lift car.

Abstract: A portable wheel chair lift device includes a lift car, a support base, and a lifting mechanism coupled thereto to selectively raise or lower the lift car while allowing the floor of the lift car to be fully-lowered to the ground surface. The lift car floor can be folded and collapsed to a reduced width allowing transport through narrow passages. Transport casters are removably mounted to the bottom of the lift car to facilitate transport. The lift device includes a height adjustment control within the lift car to repeatably raise the lift car to the height of a stage.

Abstract: A portable wheel chair lift device includes a lift car, a support base, and a lifting mechanism coupled thereto to selectively raise or lower the lift car while allowing the floor of the lift car to be fully-lowered to the ground surface. A scissors-like brace selectively locks the front door of the lift car to the support base when the lift car is elevated. The lift car floor can be folded and collapsed to a reduced width allowing transport through narrow. Transport casters are removably mounted to the bottom of the lift car to facilitate transport. The lift device includes a height adjustment control within the lift car to repeatably raise the lift car to the height of a stage.

Abstract: A height control mechanism for a lift device includes an elongated rail and an actuator slidingly mounted thereto. The actuator is biased toward a first end of the rail, and a proximity sensor is mounted proximate the second end of the rail. A cable pulls the actuator toward the second end of the rail as the lift device is elevated. When the proximity sensor detects the presence of the actuator, a signal is generated to halt further elevation. The position of the proximity sensor along the rail can be adjusted to set the maximum height of the lift device. A second proximity sensor, responsive to the presence of the actuator, can also be secured to the rail to generate a signal indicating that the lift device has been elevated off of the ground by a short distance.

Abstract: A system for supporting loads includes a track having uniformly spaced apertures separated by necks. A bracket is mounted on the track and has two groups of studs which are positioned in the necks and prevent the bracket from pulling away from the track. Neighboring studs in both groups have identical center-to-center spacings. Two plugs pass through holes in the bracket and into respective ones of the apertures. The plugs fix the bracket against movement relative to the track longitudinally and transversely of the latter. The distance between a plug hole and any stud equals one-half the center-to-center spacing of neighboring studs of a group or an integral multiple of one-half such spacing. A locking member passes through an additional hole in the bracket and frictionally engages the track to prevent the plugs from pulling out of the respective apertures during an impact.

Abstract: A mobile lifting device includes a car having a gate and a docking plate mechanically interconnected at one end of the car. A low voltage DC control system includes an “up” circuit, a “down” circuit connected in parallel with the up circuit, and a sensor circuit in series with the up circuit and down circuit. The sensor circuit includes a plurality of series connected switches for automatically preventing operation of the lifting device if predetermined conditions are not met. The “up” circuit includes a switch positioned on a stage and connected to the control circuit by a coiled cable. A wand on the switch engages a knob on the side of the car when the car reaches the level of the stage, actuating the switch to stop the car. In the event of a power failure, a battery supplies power for opening a solenoid valve to lower the car. Three control panels are provided, one at each end of the car and one in the middle of the car.

Abstract: An article for securing a load on a pallet includes two reusable straps. A hook is mounted at one end of each strap and is designed to be hooked around the runner of a pallet. The article further includes a quick-release mechanism for connecting the straps to one another. The mechanism comprises a buckle, and a yoke pivotally mounted at one end of the buckle. One of the straps is anchored to the yoke at the end of the strap remote from the respective hook. This strap may be anchored to the yoke permanently or by way of a quick-disconnect device. The buckle and the yoke have a relative position in which the second strap can be threaded into the buckle and then pulled to tighten the straps around a load. Relative pivotal movement of the buckle and the yoke to a second relative position locks the second strap to maintain tension in the straps.