Abstract: A foldable cradle assembly includes a cradle made of a flexible material, a foldable frame supporting the cradle, and an attachment device for attaching the cradle to the frame such that the flexible material hangs down freely from an open top of the cradle. Four lines may be attached to four spaced apart corners of the cradle at the first line ends. A first two of the lines at a first cradle end of the cradle may be attached to a first position on the frame and a second two of the lines at a second cradle end of the cradle may be attached to a second position on the frame such that the first and second positions are spaced apart a distance greater than a cradle length of the cradle. Spreading bars for holding the top of the cradle spread open may be disposed between each of the two lines attached to each of the cradle ends. The cradle may have a spread out rectangular shape and the lines may be strings, ropes, or chains.

Abstract: A door frame fixturing and bracing apparatus for fixturing and bracing a metallic door frame having two opposed jambs and a connecting header above a floor and typically between masonry walls. The apparatus includes a single fixturing frame having an upper member, a lower member, and at least one brace member disposed between a pair of opposed side members, the members being connected together to form an integral rectangular fixturing frame generally conforming to at least a width wise extending interior portion of the metallic door frame between its jambs. Legs are pivotally connected to the side members for swinging movement which is lateral to the plane of the door frame. A fastening means for temporarily securing the fixturing frame to the door frame includes a screw means for engaging apertures in the door jambs.

Abstract: The present invention provides a method and mixture for use in forming strong light-weight aggregate and includes by weight about; 68% to 95% fly-ash, 2% to 10% hydrated lime, and 3% to 12% alkali hydroxide such as Sodium Hydroxide. While many types of fly-ash may be used, Type F or Type C fly-ash are preferred. The admix is mixed with water to form a slurry including water in a range of 10% to 25% by weight of the dry mixture and the slurry is then compacted. The compacted slurry is then cured such as by using a rotary kiln or by in situ open air curing. The cured slurry is then allowed to hydrolyzed to form a hard material which then may be crushed and optionally screened to form an aggregate having a particular size or range of sizes.

Abstract: A training device has a ramp means to be worn on a bottom of a sole of a shoe which has an upper section with toe and heel portions and an ankle portion above the heel portion. The sole has longitudinally spaced apart heel and toe sections and the training device and the ramp means having an underside contoured to be placed against the bottom of the sole. The ramp means has, in substantially longitudinal serial relationship, a ramp down section, a parallel section, and a ramp up section. The ramp down section ramps away from the underside in a heel to toe direction with reference to the shoe. The parallel section has a parallel surface that is substantially parallel to a plane defined by the underside and longitudinally extends from the ramp up surface in the heel to toe direction. The ramp up section ramps away from the parallel surface to the underside.

Abstract: A filter apparatus for mounting over an opening at an end of a forced air system duct has a filter frame with sidewalls between open front and back ends and a channel which opens inwardly of the sidewalls. At the front end is a sheet of preferably self charging electrostatic washable filter material behind a grill, both of which are peripherally disposed within the channel and are sized and sufficiently flexible so as to be removably insertable into the channel. A second sheet of a second filter material, preferably including activated charcoal, may be disposed in the channel behind the first sheet of filter material. The filter material may be made of a woven polypropylene and the sheet may have heat sealed finished edges. A wall mount having a support frame for mounting on a wall around the opening which extends through the wall is sized and operable to support the filter frame. The support frame may be mounted to a wall.

Abstract: A bearing retainer system includes a hollow cylindrical bearing casing having a casing bore with a first axis for holding a bearing sleeve; an annular outer element rotationally secured to the casing, disposed within the casing bore, and having a circumferential first periphery circumscribed about a second axis which substantially coincides with the first axis; a bearing sleeve mounted in the casing bore and having a cylindrical sleeve periphery circumscribed about a third axis which substantially coincides with the first axis; and an eccentric cylindrical locking apparatus for locking the bearing sleeve to the outer element. The locking apparatus includes cylindrical male and female eccentric annular elements that are eccentric annular in shape and axially disposed at opposite ends of an annular outer element. The male element has an eccentric cylindrical male outer surface which mates with an eccentric cylindrical female inner surface.

Abstract: A metal frame anchor, such as one used for securing a metal door or window frame to an adjacent wall structure, having a generally rectangular base, two prongs bent upward and then over the base in opposite directions to form clips which open in opposite directions, and the base having at least one set of angularly cut opposite corners. The slidably insertable metal frame anchor is typically disposed in a metal frame element such that the anchor's base is positioned on inside surfaces of the backbends with the two prongs bent upward and then over the base in opposite directions to form clips which open in the opposite directions and which are positioned on outside surfaces of the backbends to which the anchor is clipped.

Abstract: An oxygen sensor is provided with a virtual point contact electrode to improve performance, extend operational life and to minimize thermal shock breakage; it is also provided with reduced annular space between the protective sheath and zirconia electrolyte, and minimized communicating openings to the furnace atmosphere, in order to reduce burnoff air flow during probe conditioning.

Abstract: A metallic frame and, more particularly, a stainless steel door frame has a bent sheet metal frame element encompassing an inner space and the element has backbends which extend perpendicularly inward from the back ends of faces of the element. At least one slidably insertable sleeve is disposed inside the element and has flanges which are spot welded to the back ends. The sleeves serve as carriers for various door hardware such as hinge reinforcement and strike plates, clips having bendable tabs, and anchors.

Abstract: A rhythm board that is electronically amplified using at least one fixed pick-up unit, though more units may be used, installed internally on a resonator. The pick-up unit may be of the solid contact transducer type, dynamic microphone or condenser microphone type. A more particular embodiment of the present invention provides a hollow rhythm board made of wood and covered by a wooden top and bottom. The top is a sound board for being struck by the foot causing internal vibrations which are transferred to the pick-up via the resonator.

Abstract: A hydraulic control slide valve and toy motion simulating apparatus for imparting motion to an operator controlled by the hydraulic control slide valve to proportionally direct hydraulic fluid from pitch, roll, and yaw fluid nozzles to respective pitch, roll, and yaw receiving chambers which are pivotably disposed with respect to the nozzles. The valve has a pivotable slider block which in turn has a pitch and roll nozzle to proportionally direct hydraulic fluid to respective nose up and nose down pitch receiving chambers and clockwise and counter-clockwise roll receiving chambers and a yaw nozzle to proportionally direct hydraulic fluid to right and left yaw receiving chambers. The valve has a drain means for directing hydraulic fluid that doesn't flow into the receiving chambers out of the hydraulic control valve.

Abstract: A pressure differential indicating apparatus having a wall duct with first and second ends, first and second flange like mounting plates respectively disposed around and attached to the first and second ends, and a low speed airflow indicator mounted at one of the ends on a side of the mounting plate opposite that to which the wall duct is mounted. The low speed airflow indicator is adapted to indicate a specified pressure differential or range of pressure differential across a wall. The wall duct is preferably an adjustable length wall duct having two sections, a first section attached to the first mounting plate and a second section attached to the second mounting plate, wherein one of the two sections is constructed so as to be slidingly disposed in and in sealing engagement with the other of the two sections. The airflow indicator may be mounted within an extension of a clear plastic form of the duct second section.

Abstract: A metallic frame and the assembly from which it is constructed has a header and a jamb and a means to attach them together at a corner of the metal frame. The header and the jamb each have a soffit disposed inwardly from a rabbet and a stop extending substantially perpendicular to and between the rabbet and the soffit. One of either the header or jamb has terminal ends of a first soffit, a first stop, and a first rabbet that generally lie in the same plane with a first corner edge. A rail slot extends through a width of the corresponding first stop and thicknesses of the first soffit and the first rabbet. The other of the header and a jambs has track formed along a second rabbet between a terminal end of a second rabbet and a terminal end of a second stop and second soffit which are cut back and spaced a distance from the terminal end of the second rabbet such that the track and the rail slot are slidingly engageable.

Abstract: A panel assembly that may be used in doors, particularly hollow metal doors, and other types of panels such as interior and exterior walls, room partitions, and the like. The panel assembly exemplified by a hollow or filled metal door is constructed from a deep pan and a shallow pan made from unitary pieces of sheet metal sheet and each pan includes top, bottom, and two opposing side flanges extending from rectangular face members. The flanges of the deep pan are substantially perpendicular to its rectangular face member and higher than those of the shallow pan. Side flanges of one of the pans have first latch members formed along free side edges of their side flanges remote from their respective face member and side flanges of the other pan have second mating latch members formed along free side edges of their side flanges remote from their respective face members.

Abstract: An apparatus for forming composite tows of uniform width comprises a tow tensioner mechanism which carries a reel having a length of tow of non-uniform width, a tow sizing unit, a drive roller unit and a tow winding device. A single tow is fed from the tensioner mechanism to the tow sizing unit where the side-to-side or width dimension of the tow is sized, and then the sized tow is transmitted through the drive roller unit to the tow winding device which winds the sized tow onto a reel. The tow sizing unit includes a rotatable sizing wheel having a circumferential flanged groove, and a presser roller, which cooperate to confine the tow on all four sides, i.e., top, bottom and opposed side edges, as the tow is pressed therebetween to form a finished, sized tow having a substantially uniform width.

Abstract: A toy motion simulating apparatus for imparting motion to an operator controlled by a hydraulic control valve to proportionally direct hydraulic fluid from pitch, roll, and yaw fluid nozzles to respective pitch, roll, and yaw receiving chambers which are pivotably disposed with respect to the nozzles. A pitch and roll nozzle to proportionally direct hydraulic fluid to respective nose up and nose down pitch receiving chambers and clockwise and counter-clockwise roll receiving chambers and a yaw nozzle to proportionally direct hydraulic fluid to right and left yaw receiving chambers. The valve has a drain means for directing hydraulic fluid that doesn't flow into the receiving chambers out of the hydraulic control valve.

Abstract: A filter apparatus has a rigid housing surrounding a piece of preferably self charging electrostatic filter material and having a preferably magnetic attachment device for mounting the filter apparatus directly in front of a grill at an end of a cold air return or supply of a forced air system, for a heating and/or air conditioning system. The filter and housing are generally sized so that the frame does not cover any of the openings on the grill over which it is designed to be placed. Decorative openwork is positioned in the front of the filter material to provide an aesthetically pleasing covering of what is considered less than attractive filter material.

Abstract: A panel assembly that may be used in doors, particularly hollow metal doors, and other types of panels such as interior and exterior walls, room partitions, and the like. The panel assembly exemplified by a hollow or filled metal door is constructed from a deep pan and a shallow pan made from unitary pieces of sheet metal sheet and each pan includes top, bottom, and two opposing side flanges extending from rectangular face members. The flanges of the deep pan are substantially perpendicular to its rectangular face member and higher than those of the shallow pan. Side flanges of one of the pans have first latch members formed along free side edges of their side flanges remote from their respective face member and side flanges of the other pan have second mating latch members formed along free side edges of their side flanges remote from their respective face members.

Abstract: A two stroke engine having a variable inlet port timing device in conjunction with a piston port controlled timing apparatus for filling the top of transfer passages, that connect the crankcase chamber to the combustion chamber of the engine, with buffer gas such as exhaust gas or secondary air for the reduction of pollutants, improvement of performance, and delivery ratio of an internal combustion two-stroke engine and the like. Piston port controlled timing is provided by buffer air passages having a movable portion with inlet and outlet ports disposed through the piston. In another embodiment piston controlled selective exhaust gas recirculation is provided and a rotary valve in the exhaust gas recirculation passage is fitted to improve the performance of the engine. The pressure in the crankcase may be controlled by a rotary valve comprises a pair of rotary disc plates.