An oven door construction in which the door is adapted to be sealed to a front plane surface when the door is closed. The seal comprises tubular elastomeric gaskets having metal inserts in their ends removably secured to the front plane surface around the oven opening. The inserts are held in place by room temperature vulcanizing adhesive and have structures cooperating with holes in the front plane surface into which the structures are engaged. The gaskets are stretched to make them fit and hel...

The VOIP drop amplifier connects end user equipment to a broadband system, such as that provided by a cable provider. The amplifier includes a splitter for connecting the cable signal to multiple output connectors, and RF amplifiers compensating for losses in the splitter and other passive components in the amplifier. The drop amplifier includes an input connection for accepting a broadband cable signal from a cable system and returning broadband signals to the cable system. The drop amplifier i...

Metal residues are extracted from poly(ether ketone ketones) with aliphatic alpha-hydroxycarboxylic acids or aromatic ortho-hydroxycarboxylic acids in a liquid phase, either neat or in an aqueous or a nonaqueous solution. Extraction of metal residues, which usually derive from the catalysts used in the preparation of poly(ether ketone ketones), improves both the color and the thermal stability of these polymers.

A device for on-line control and automatic ejection of faulty blanks moving along a conveyor wherein there is a linear ejector conveyor positioned laterally and at an acute angle to the conveyor direction and wherein the speed with which the faulty blanks are conveyed away by the ejector conveyor is related to the speed of the conveyor by the relationship

An apparatus for removing folding box blanks from a folding box magazine and transferring them to between drivers of a conveyor system has a suction rotor with suction cups. The suction rotor is coupled to a four-bar mechanism, which erects the folding box blank along a stationary erecting shunt. By the engagement of the suction cups with a trailing side wall of the folding box blank, which wall stands vertically with reference to the feeding direction, and because of the disposition of the erec...

A solar pool heating system for providing a foldable floating frame and heat absorbent cover to permit selective heating of a pool of water. The solar pool heating system includes a floating frame and a cover member of heat absorent material. The frame positions the cover in spaced relationship to a surface of the water in a pool to permit heating of the pool as solar energy is absorbed by the cover. The frame assembly is foldable in half and the cover member is used as a way of carrying and sto...

A multilayer hollow fiber body useful, for example, in a blood oxygenator. The multilayer hollow fiber body comprises a single hollow fiber mat arranged in the form of a body comprising a plurality of hollow fiber plies. The mat comprises a plurality of generally parallel hollow fibers disposed at regular intervals, and a plurality of connecting fibers holding the connecting fibers. The mat is repeatedly folded over on itself along fold lines, each of which is at an oblique angle to the hollow f...

A multilayer hollow fiber body useful, for example, in a blood oxygenator. The multilayer hollow fiber body comprises a single hollow fiber mat arranged in the form of a body comprising a plurality of hollow fiber plies. The mat comprises a plurality of generally parallel hollow fibers disposed at regular intervals, and a plurality of connecting fibers holding the connecting fibers. The mat is repeatedly folded over on itself along fold lines, each of which is at an oblique angle to the hollow f...

An apparatus and method for printing onto and erecting a box. A feeder holds knockdowns, which are transported to a printer in a substantially vertical position and printed upon. An upper knockdown kickout guide and a lower knockdown kickout move the knockdown into a diagonal position and impel it forward such that the knockdown is momentarily airborne. A roller or rollers facilitate the entry of the printed knockdown into a hopper by minimizing horizontal friction encountered by the printed kno...

A tray forming machine comprising an infeed station for accepting a blank of corrugated plastic, and a transfer mechanism which automatically conveys the blank along a plane into a blank receiving station between a tray forming ram and a forming tool frame. The tray forming ram moves downward along a vertical path carrying the blank through the forming tool frame, during which the blank is folded into a generally upright tray configuration by a series of vertically displaced side and end forming...