Abstract: A method and apparatus is described for forming a T-shaped slot a sheet of material. The sheet of material is clamped to a top surface of an arbor. The arbor has a uniform T-shaped cross section having two undersides of the T-shape. The sheet of material is first formed into an inverted U-shape and then the sheet of material is bent to conform to the undersides of the arbor forming the T-shaped slot. The arbor is withdrawn from an open end of the formed T-shaped slot.

Abstract: Apparatus for positioning an object includes a fixed vertical frame and a carriage to support the object. The carriage includes a first end with rollers to engage the frame and a second end with a bearing to engage a floor or other surface. Also at the second end is a gate which can be moved from a position wherein it is parallel to said carriage to a position wherein it is perpendicular to said carriage. A drive operates a cable linkage to move the first end of the carriage along the frame and to rotate driven wheels in the bearing to move the carriage between vertical and horizontal positions.

Abstract: A drill bit assembly has a housing having a central passageway including a pressure chamber and a vacuum chamber. The pressure chamber is connectable with a pressure source and the vacuum chamber is connectable with a vacuum source. The pressure chamber and vacuum chamber are in fluid communication with each other. A bearing assembly has an outer race rigidly mounted within the pressure chamber and an inner race for frictionally engaging the drill bit. A bracket mounts the housing with the drill bit extending through the central passageway. A seal is formed between the pressure chamber and the vacuum chamber as fluid, such as air, from the pressure source flows into the pressure chamber to the vacuum chamber for exhausting to the vacuum source.

Abstract: Selective demetallization of an etchable metal layer supported on a polymeric material or other microwave transparent material, or a self-supporting etchable metal layer, particularly aluminum of thickness at least about 1 micron adhesively joined to a flexible polymeric material substrate, is described. A web of polymeric material bearing the etchable metal layer, or an unsupported etchable metal layer, has a pattern of etchant-resistant material first applied and then the web is immersed in and passed through a bath aqueous etchant, particularly hot aqueous sodium hydroxide solution, for a time at least sufficient completely remove the etchable metal from non-protected areas of the web. The demetallized web is washed and dried. Specific structure incorporating the selectively demetallized etchable metal layer also are described.

Abstract: A device for controlling an AC output with an AC load from an AC supply comprises a power amplifier module connected to the AC supply and a control module in communication with the AC supply and the power amplifier module. The power amplifier module converts an AC supply to DC and then converts the DC to an AC output. The control module extracts predetermined characteristics, such as current, voltage and frequency from the AC supply and compares the predetermined characteristics with stored load characteristics of the AC load. The control module responsively triggers the power amplifier module to generate an output waveform of the AC output substantially in phase with respect to the AC supply.

Abstract: A method and apparatus for fusing a bell connector to the end of a corrugated thermoplastic pipe are disclosed in which an expandable mandrel grips a preformed bell and a pipe support grips a pipe co-axial with the longitudinal axis of the bell. A pipe trimmer for facing the pipe end may be moved into and out of the axis of the pipe if necessary for trimming the pipe end to provide a uniform planar face and a heater moved sequentially into and out of the axis of the pipe and bell for heating the opposed faces of the trimmed end of the pipe and the end of the bell to a desired fusing temperature. Upon heating of the opposed faces of the bell and the pipe to a predetermined fusing temperature, the said faces of the bell and the pipe are abutted against each other at a predetermined pressure for a time sufficient to fuse the bell and pipe together.

Abstract: A transit packaging having a reduced content includes a blank of a corrugated cardboard having flutes in a longitudinal direction. A first and second transverse score are made at opposite end regions of the blank defining side panels of the packaging. A plurality of longitudinally aligned pairs of notches are at opposite ends of the blank. A retainer releasably retains like containers onto the blank preventing relative sliding movement. A plurality of straps, each positioned in one of the aligned pairs of notches, wraps about the blank when the like containers are retained on the blank.

Abstract: A screen module for a size reduction machine has a rigid screen having a tapered apertured wall formed in a frusto-conical shape. The rigid screen has an open wide end and a flat end. The wide end is mountable within a channel of the size reduction machine at a predetermined distance from a complementarily shaped impeller. The module has a fine screen nested within the rigid screen and against the tapered apertured wall. The fine screen has a wide end and a narrow end corresponding to the apertured wall. An adaptor disc is releasably secured within the rigid screen at the flat end. The adaptor has a tapered outer perimeter for seating against the tapered apertured wall when the adaptor disc is secured within the rigid screen, clamping the narrow end of the fine screen therebetween. A clamp ring is releasably secured at the open wide end of the rigid screen.

Abstract: A cobalt based coating is provided which is functional to reduce the coefficient of friction between two operatively, frictionally engaging titanium alloy surfaces.

Abstract: A method and apparatus for producing a nickel shell mold by nickel vapour deposition onto a mandrel in a deposition chamber is disclosed. A nickel shell mold assembly is produced having a liquid and vapour-tight cavity co-extensive with the mandrel for receiving a heating fluid, preferably a liquid such as oil, for flood heating of the mandrel to a uniform surface temperature.

Abstract: A mouse pad apparatus has a molded base, a pad, and a cord retainer. The molded base has a streamline profile and an outer peripheral surface surrounding a well adapted for receiving the pad. The outer peripheral surface has two adjacent sides extending substantially perpendicular to each other and two opposite sides extending arcuately from the adjacent sides. The two opposite sides each has a contoured wrist supporting surface extending outwardly from the well. The cord retainer is between the two adjacent sides. The cord retainer is an open passageway integrally molded in the outer peripheral surface and an molded cover for covering the passageway. The pad is affixed to said base within the well. The well has a depth wherein when the pad is fully registered therein the pad extends substantially co-planar with the adjacent and opposite sides. A plurality of rubber feet extend from an underside of the base.

Abstract: A convertible golf bag has a gusset panel which is invertible between a closing position and a carrying position. In the closing position, the gusset panel is fastenable to the golf bag for closing an open end thereof. In the carrying position, the gusset panel is fastenable to the golf bag at a point spaced from the open end for converting the gusset panel into a shoulder strap.

Abstract: A collapsible, portable child's play-pen, which may be foldably collapsed onto two half-members which are pivotably coupled together along an axis and which together form a base for the play-pen, which may then be subsequently folded together to form a compact portable unit. First and second frame members, each pivotably coupled to the base along parallel but mutually opposite edges of the base, form one set of opposite side walls of the play-pen. Each of the first and second frame members are provided with a respective pair of first and second pivotable linking arms. One end of each of the first pair of linking arms is pivotably coupled to a first frame member, and similarly one end of each linking arm of the second pair of linking arms is pivotably coupled to the second frame member.

Abstract: A reusable and returnable container system for packaging, shipping and displaying goods comprises a tote having an opening in a bottom surface and an upper opening. The opening in the bottom surface has an abutment for supporting a tray inside the tote. The tote is preferably stackable and nestable with like totes. The tray is adapted to carry goods and is insertable into the tote for resting on the abutment. The tote is easily separated from the tray without first removing the goods. Each tray can be transferred to a shelf for displaying the goods for selection by consumers. After the tray has been emptied, each tray can be stored in a stack of nested totes for returning for re-use.

Abstract: A transition collar for use in road construction comprises an annular collar member made of elastomeric materials such as rubber. It has a generally planar top surface and a central opening sized to accommodate a rigid frame structure having an access opening formed therein. The collar member has a vertical outer wall that faces the road material, which outer wall has a number of horizontally extending, spaced apart ridges formed thereon. These ridges assist in securing the collar in a road bed. Preferably the uppermost ridge is spaced below the top surface of the collar. The collar can have a number of small bumps distributed over its top surface to improve traction for vehicles. Preferably these bumps have sloping sidewalls extending about their periphery. A cushioning device is used to adjust the position of the frame structure and comprises a flat, elastomeric member with exterior dimensions corresponding to those of the frame structure.

Abstract: An apparatus for stacking and loading sheet material being continuously ejected along a flow path from a sheet production apparatus has a frame, a stationary rake, a catching rake and a drive. The stationary rake is mounted on the frame and positioned for directing sheet material being ejected to a stacking area. The catching rake is pivotally and extensibly mounted on the frame. The drive is adapted for effecting movement of the catching rake.

Abstract: A composition for treating skate blades has a polytetrafluoroethylene (PTFE) resin and a carrier. The carrier includes a wetting agent for dispersing the PTFE resin and an inert agent for reducing any volatility of the wetting agent and which will not contaminate ice. The composition is applied to the skate blade and burnished thereon for presenting a blade surface impregnated with PTFE resin and having a reduced coefficient of friction.

Abstract: A printing compound and methods of producing 3-dimensional signs and lettering and tactile and Braille reading materials is disclosed. The printing compound includes an ultraviolet radiation curable resin and a filler mixed with the resin to form a paste. The resin can be an acrylated urethane oligomer or an epoxidized oil. The compound is applied to a substrate manually or by a computer controlled dispensing apparatus. The compound is subjected to ultraviolet radiation to cure quickly allowing for mass production.