Abstract: A window covering is provided. The window covering may include a frame mountable within a window return. The frame includes up to four frame members. The four frame members include a first side member having a first light stop, a second side member having a second light stop, a top member having a top light stop, and a bottom member having a bottom light stop. The top member may be coupled between top ends of the first side member and the second side member and the bottom member may be coupled between bottom ends of the first side member and the second side member to form a rectilinear shaped frame. A window covering may be coupled within the frame, wherein the light stops reduce a light gap between the window covering and the frame.

Abstract: A window covering is provided. The window covering may include a frame mountable within a window return. The frame includes up to four frame members. The four frame members include a first side member having a first light stop, a second side member having a second light stop, a top member having a top light stop, and a bottom member having a bottom light stop. The top member may be coupled between top ends of the first side member and the second side member and the bottom member may be coupled between bottom ends of the first side member and the second side member to form a rectilinear shaped frame. A window covering may be coupled within the frame, wherein the light stops reduce a light gap between the window covering and the frame.

Abstract: A window covering is provided. The window covering may include a frame mountable within a window return. The frame includes up to four frame members. The four frame members include a first side member having a first light stop, a second side member having a second light stop, a top member having a top light stop, and a bottom member having a bottom light stop. The top member may be coupled between top ends of the first side member and the second side member and the bottom member may be coupled between bottom ends of the first side member and the second side member to form a rectilinear shaped frame. A window covering may be coupled within the frame, wherein the light stops reduce a light gap between the window covering and the frame.

Abstract: A window covering is provided. The window covering may include a frame mountable within a window return. The frame includes up to four frame members. The four frame members include a first side member having a first light stop, a second side member having a second light stop, a top member having a top light stop, and a bottom member having a bottom light stop. The top member may be coupled between top ends of the first side member and the second side member and the bottom member may be coupled between bottom ends of the first side member and the second side member to form a rectilinear shaped frame. A window covering may be coupled within the frame, wherein the light stops reduce a light gap between the window covering and the frame.

Abstract: In the process of drawing optical fibers, a protective plastic coating is applied to the fiber by applying a curable liquid coating material thereto and the subsequently curing the liquid coating to a protective plastic layer. At high fiber draw speeds, air entrained with the fiber enters the liquid coating material and causes bubbles in the cured coating. The incidence of bubbles in the coating is reduced by replacing air adjacent the fiber surface with helium.

Abstract: A vaporizer for halide-free, silicon-containing liquid reactants used in producing preforms is provided. The vaporizer includes a heated, vertically-oriented expansion chamber (20) and a vertical hollow shaft (42) which extends into the chamber and has a plurality of orifices (45) at its upper end (44). Preheated reactant is supplied to the vertical shaft (42) at an elevated pressure and is sprayed onto the chamber's heated wall (22) by the orifices (45). A portion of the liquid reactant vaporizes upon entering the internal volume (24) of the chamber (20) due to the pressure drop between the inside of the shaft and the inside of the chamber. The remainder of the liquid reactant vaporizes by being heated through contact with the chamber's wall (22). Higher molecular weight species present in the raw material or generated by the vaporization process are collected in the bottom portion of the chamber where they can be periodically removed.

Abstract: A vaporizer for halide-free, silicon-containing liquid reactants used in producing preforms is provided. The vaporizer includes a heated, vertically-oriented expansion chamber (20) and a vertical hollow shaft (42) which extends into the chamber and has a plurality of orifices (45) at its upper end (44). Preheated reactant is supplied to the vertical shaft (42) at an elevated pressure and is sprayed onto the chamber's heated wall (22) by the orifices (45). A portion of the liquid reactant vaporizes upon entering the internal volume (24) of the chamber (20) due to the pressure drop between the inside of the shaft and the inside of the chamber. The remainder of the liquid reactant vaporizes by being heated through contact with the chamber's wall (22). Higher molecular weight species present in the raw material or generated by the vaporization process are collected in the bottom portion of the chamber where they can be periodically removed.

Abstract: A roller bearing assembly having an inner raceway member and an outer raceway member defining an inner raceway bearing surface and an outer raceway bearing surface spaced from one another. Both members are preferably annular and have a bearing cage member positioned therebetween for retaining a plurality of individual cylindrically shaped roller bearings therein. The bearing cage member includes a peripherally extending rim adapted to extend into a peripheral groove defined in the outer race member for maintaining axial retention therebetween. The inner race member includes an inner race shoulder adjacent the inner race bearing surface and extending outwardly therefrom beyond the outer race bearing surface for facilitating axial retention of the inner race member. A clocking tab may be defined on the peripheral rim adapted to extend into a clocking slot defined in the peripheral slot to facilitate angular orientation or clocking between the bearing cage member and the outer race member.

Abstract: A compensation system for a computer-controlled machining apparatus having a controller and including a cutting tool and a workpiece holder which are movable relative to one another along preprogrammed path during a machining operation utilizes sensors for gathering information at a preselected stage of a machining operation relating to an actual condition. The controller compares the actual condition to a condition which the program presumes to exist at the preselected stage and alters the program in accordance with detected variations between the actual condition and the assumed condition. Such conditions may be related to process parameters, such as a position, dimension or shape of the cutting tool or workpiece or an environmental temperature associated with the machining operation, and such sensors may be a contact or a non-contact type of sensor or a temperature transducer.

Abstract: A method and apparatus is provided for controlling the diameter of a coated optical waveguide fiber. The viscosity profile of the coating material is controlled by adjusting the temperature of a portion of the coating assembly based on a measurement of the diameter of the coated fiber. By controlling the viscosity profile of the coating material, the amount of coating applied to the fiber is controlled,, thereby determining the diameter of the coated fiber.

Abstract: A double-pass interferometer is provided which allows direct measurement of relative displacement between opposed surfaces. A conventional plane mirror interferometer may be modified by replacing the beam-measuring path cube-corner reflector with an additional quarter-wave plate. The beam path is altered to extend to an opposed plane mirrored surface and the reflected beam is placed in interference with a retained reference beam split from dual-beam source and retroreflected by a reference cube-corner reflector mounted stationary with the interferometer housing. This permits direct measurement of opposed mirror surfaces by laser interferometry while doubling the resolution as with a conventional double-pass plane mirror laser interferometer system.

Abstract: The present invention is directed to a method and device for determining the location of a cutting tool with respect to the rotational axis of a spindle-mounted workpiece. A vacuum cup supporting a machinable sacrifical pin is secured to the workpiece at a location where the pin will project along and encompass the rotational axis of the workpiece. The pin is then machined into a cylinder. The position of the surface of the cutting tool contacting the machine cylinder is spaced from the rotational aixs of the workpiece a distance equal to the radius of the cylinder.

Abstract: An improved animal oiler device having an extensive frame base, an upstanding shaft secured to the base, a pair of spaced horizontally disposed plates rotatably mounted on the shaft, a plurality of generally upstanding wooden posts rotatably secured between the plates and an oil reservoir formed in each post, wherein oil disposed in said reservoir will seep to the periphery of the post. The action of the animal rubbing on the post will cause the post to rotate, thus presenting a large surface of oil to the skin of the animal, and further, the rotation of the post about the shaft prevents damage to the oiler.