Abstract: A replacement spool for a rotating line vegetation cutter comprising a central generally cylindrical hub portion, a pair of outer flanges on the outside surface of the hub portion at the ends of the hub portion, a central flange between the outer flanges for dividing the spool into two sections for receiving line in each section, an elongated slot formed in the hub portion and extending substantially parallel to the longitudinal axis of the hub portion, the elongated slot being positioned on the hub so as to extend behind the central flange from approximately the middle of one of the sections to approximately the middle of the other section, and a length of vegetation cutting line wound on the spool in such a manner that one end of the line is wound in each of the sections and a midsection of the line lies in the slot and connects the ends of the line.

Abstract: A flexible line vegetation trimmer is disclosed, wherein the trimmer includes a conventional line cutting element mounted for rotation about an axis to define a cutting path, a debris shield mounted above at least an arc of the cutting path, and a cutting blade on the debris shield for cutting segments from the line to reduce the line length to a predetermined distance. In this generally conventional line trimmer the present invention provides a cut line pocket mounted below the debris shield, and having the cutting blade mounted at the mouth thereof, with the cut line pocket catching the segments of line cut from the line by the cutting blade. The cut segments are trapped in the cut line pocket, thereby reducing if not eliminating the danger of the cut segments striking a person or animal in the vicinity of the operating line trimmer.

Abstract: In a compass saw formed as a hand-held machine tool a flat saw blade is connected with a flat reciprocating rod by a connecting device which comprises a cup-shaped clamping sleeve screwed on a rotary member formed with a through hole extended in the direction of elongation of the reciprocating rod the end of which is inserted into that hole. The shaft of the saw blade passes through a bore formed in the clamping sleeve and partially extends into the hole in the rotary member. Two opposing pins formed on the shaft of the saw blade limit the extension of the saw blade shaft into the hole of the rotary member. The end of the shaft is pressed against a recess formed in the reciprocating member, on the one hand, and the pins of the shaft are engaged in depressions formed in the rotary member, on the other hand, whereby clamping of the shaft of the saw blade with the end of the reciprocating rod in the clamping sleeve is ensured.

Abstract: An orbital-action reciprocating power saw includes a motor-driven transmission that causes a saw blade carrier to reciprocate along an axis of reciprocation and move in a direction transverse to the axis of reciprocation to provide an aggressive cutting action. The transmission includes a rotary-to-reciprocation drive mechanism defined by a rotatably driven gear having an eccentrically mounted pin that engages a slotted yoke connected to the saw blade carrier. The saw blade carrier is mounted in a `floating` bearing that accommodates both reciprocation and movement in a direction transverse to the reciprocation axis. A rocker arm is pivotally mounted intermediate its ends with one end engaging the floating bearing mount and the other end engageable with an axial-face cam portion of the rotatably driven gear. The rocker arm is effective to move the saw blade carrier in a direction transverse to the axis of reciprocation to provide the desired orbital action.

Abstract: A gauge which facilitates the analysis of a recorded electrocardiogram which comprises a flat sheet of transparent material having a plurality or fan of straight diverging lines disposed on said sheet; a plurality of straight, parallel lines disposed on the sheet extending in a direction transverse to the diverging lines and perpendicular to a line extending medially between the outermost of said diverging lines, said diverging lines intersecting said parallel lines as to define equal increments along any parallel line; the transverse lines being spatially arranged such that they intersect with the diverging lines to form a grid therewith wherein the distance between adjacent points of intersection with the diverging lines on any of the parallel lines bear a relation to the heart beat rates or heart rate cycle interval of a periodic wave form recorded on an electrographic chart or strip; indicia means disposed on said sheet for designating the transverse parallel lines as graduations of a scale comprising int

Abstract: A toy computer image processor assembly wherein a toy assembly in the form of a simulated computer is provided with hand manipulated actuating members in a keyboard section connected to image producing means in a screen section to selectively move such image producing means into and out of engagement with the screen and in selected directions along the screen.

Abstract: The measurement of the length of a straight line or an arc, traversed during relative movement of two bodies, and especially the measurement of the distance of a predetermined point on the first one of the two bodies, which point may be defined by providing a first marking on the first body, from at least one second marking which is one of a plurality of markings provided on a first marking carrier which is fixedly connected to the second of the two bodies, is made possible by imparting an oscillatory movement to a first sensor which is provided on the first body and scans the markings on the first marking carrier and generates a time significant signal at each crossing by the first sensor of the at least one second marking, by further generating a reference signal each time the first sensor moves through a predetermined position with respect to the first marking on the first body, measuring the time distance between at least one time-significant signal and one reference signal, both signals being generated d

Abstract: The instrument for measuring lengths comprises a carrier, a rule secured to that carrier and provided with a scale, and an optoelectronic scanning unit comprising a scanning plate, light emitters and light receivers. The scanning unit is movable along the scale by means of an actuating member, which constitutes a feeler. Auxiliary tracks are provided for guiding the scanning unit along the scale. A part of the scanning unit is connected to the actuating member by means which are yieldable transversely to the longitudinal direction of the scale. Auxiliary tracks are provided for guiding a part of the scanning unit along the scale. The overall structure is simplified and reduced in overall size and a change of the clearance between the scanning plate and the rule is prevented in that only the scanning plate is guided in engagement with the auxiliary tracks, one of which is constituted by the rule.

Abstract: The invention provides a measuring machine which includes a stationary measuring contact point and a movable measuring contact point, each of which is positioned so as to oppose each other. Measuring of an object is carried out by putting the object between the stationary measuring contact point and the movable measuring contact point. A spindle carrying the movable measuring contact point is supported by a linear bearing of the crossed roller type. The linear bearing supports the spindle in plural directions. Thus, the sliding motion of the spindle can be carried out smoothly to obtain the precise measuring value.

Abstract: A thread construction of a length measuring instrument wherein a spindle is provided by forming out of a ceramic material an externally threaded portion on the outer peripheral surface thereof. A plurality of externally threaded pieces are cut from an externally threaded member made of a material identical with and having a pitch equal to the externally threaded portion of the spindle and fixedly secured to the inner peripheral surface of a sleeve opposed to the externally threaded portion to thereby make the spindle be of a screw feed type, and the manufacturing method therefor.

Abstract: The double-flank composite error tester contains at least one magnet by means of which an associated gear is brought into a predetermined, always identical rotary position and fixedly held in this position prior to being interengaged with the teeth of another gear. A sensor is positioned adjacent the circumference of the other gear opposite to the center of a tooth tip or of a tooth space of the other gear. The teeth data of the other gear are supplied to a pulse processor. The other gear is then rotated and pulses are generated by the sensor due to this rotation. The pulses are fed to the pulse processor which generates pulses for controlling rotary drive means on the basis of the pulses received from the sensor and the teeth data supplied to the pulse processor. Such controlling pulses correspond to a central position at which the one gear can be engaged with the other gear in a collision-free manner. Instead of the sensor a magnet can be used and then the pulse processor can be omitted.

Abstract: A drum type drier has a drum housed in a housing. The drum has a cylindrical body and first and second end plates respectively closing both ends of the cylindrical body. The first end plate is provided with an inlet-outlet port to take clothings into and out of the drum. An air inlet and air outlet which communicate with the interior of the drum are arranged to face each other with the inlet-outlet port between. An air stream heated by a heater is conducted into the drum through the air inlet to take moisture from the clothings housed in the drum. The air stream which has taken moisture from the clothings is discharged to the outside of the drum through the air outlet.

Abstract: An outer sole especially designed for basketball shoes which is lightweight, stable, and provides a greater degree of shock absorption than heretofore possible. The sole includes a plurality of kinetic levers or tread members which extend downwardly and outwardly from the peripheral portion of the bottom of the sole and, together with a relatively stiff, centrally formed pedestal on the inside surface of the sole, define a cantilevered construction that dissipates shock by inducing spreading of the levers laterally outwardly upon foot-induced ground impact. The space between the inner, central pedestal and the side wall of the sole defines a cavity positioned above the respective tread members for facilitating compression and spreading thereof to enhance to shock-dissipating qualities of the sole. The sole also includes a side wall which, together with the upper walls of the tread members, defines a groove. The groove also facilitates compression and spreading of the tread members.

Abstract: In an instep support for footwear, as for example in athletic shoes, strap or band member(s) extend upwardly and angularly forwardly from the insole, or the insole insert, for the shoe, and incorporate a fastening device at the band ends, so that they can be either secured together over the instep of the foot, or applied and held in place by connecting with the surface of a component of the shoe; the band members may also extend upwardly from an approximate central location for the insole, so that not only will the instep portion of the foot be embraced by the support, but the lateral portions of the arch will likewise be snugly retained by the elastic band members to assure full arch support in addition to a firm embracing of the instep of the foot as contained within the constructed shoe. In addition, a harness integrally connects with the band members and extends rearwardly therefrom for extending around the heel of the foot in order to enhance the support of the foot during application of the shoe.

Abstract: An excavator bucket has a ground engaging portion with a central housing and side housings providing sockets for receiving the tangs of various implements for use in the excavation and grading of earth. The structure and arrangement of the housings provide a secure mounting for the various implements and also permits a ready attachment and detachment from the bucket with a minimum number of connections.

Abstract: A router bit for use with earth-moving equipment such as tractor scrapers, bucket loaders and dozers, composed of two parts, one affixed permanently to the apparatus and the other, which comprises the cutting edge, separable from the former for ease of replacement when worn and ineffective, thus obviating the need for expensive and laborious replacement of the whole router bit assembly. The upper and lower parts are joined by interlocking fingers and secured further by flex pins. The lower part, by means of a bar-like extension affixed to and positioned generally diagonally across the length of either side thereof, is prevented from lateral movement.

Abstract: A steam iron has a water tank divided into first and second chambers and a vaporizing chamber formed in an electrically heated sole-plate of the iron. A drip valve is arranged to supply water from said first chamber to the vaporizing chamber, said first chamber being connected to atmosphere and the first and second chambers being in flow communication via at least one opening formed in a lower region of the tank. A tube connecting said vaporizing chamber to said second chamber is arranged such that its mouth opens into the second chamber above the filling level of water therein.

Abstract: A portable transparency viewer including a body having a fixed imaging screen with a light source disposed therebehind within the viewer body. Also held within the viewer body is a selectively energizable power source for illuminating the imaging screen. An adjustable magnifier is pivotally attached to the viewer body overlying screen in movable and parallel spaced relation thereto. For viewing slides and filmstrips, an auxiliary removable magnifier is provided which is adapted to be releasably engaged and retained on the viewer body over the viewing screen. The auxiliary magnifier includes a slide carrier for selectively introducing slides between the lens of the auxiliary magnifier and the imaging screen of the viewer body. The auxiliary magnifier further includes an inlet and an outlet positioned on opposite sides of the housing so as to permit the passage of a filmstrip therethrough.

Abstract: Disclosed is a picture viewer for viewing a stack of pictures sequentially through a viewing window. The picture viewer comprises a housing member, a slider member, a bias means for urging the stack of pictures against the viewing window, and an exchange means for sequentially changing the picture that is presented at the viewing window. The exchange means comprises: (a) a retentive element to hold one picture in the housing member when the slider member is moved out of the housing member and (b) a separator bar which pushes the remainder of the stack out of the housing when the slider member is moved out of the housing. To permit relatively smooth operation of the picture viewer, the bias means is mounted on the slider.

Abstract: My invention provides a fully-loaded device which is carried by a sportsman in an easily-accessible position for quick reloading of a muzzle-loading rifle. The device comprises a cylinder rotatably carried by a base member, the cylinder having a plurality of elongated openings which are open all the way through the same, and one elongated opening that is closed at its bottom end. The base has an upper flat surface which mates with a lower flat surface of the cylinder, and an off-center opening adapted to be aligned with any one of the elongated openings. The base also has a side opening so that the end of the rifle barrel may be inserted for alignment with the off-center opening. The fully open elongated openings are each adapted to contain black powder, a patch and a ball, while the bottom-closed elongated opening may be used for the storage of tools or the like, or for the storage of flashpan powder in the event the rifle is of the flintlock type.

Abstract: A fishing decoy made up of thin sheets of transparent material with a plurality of inflatable fish images projected thereon, for the purpose of attracting fish to a particular fishing area. The transparent sheets carry a plurality of fish images in color, with a pictorial of seaweed and the like surrounding the fish images so that they appear to be swimming in their natural habitat. The transparent sheets have an air flotation chamber extending along the upper edge and a series of weights attached along the lower edge to maintain the sheet in a substantially vertical plane. Wave action and other external forces cause a rippling action in the sheets giving the fish images the appearance of swimming and a more life-like appearance.

Abstract: A fishing rod holder with automatic hook setter embodies a supporting frame having a rod holder operatively connected thereto and adapted for vertical pivotal movement. One end of a trigger rod is pivotally connected to the supporting frame with the other end of the trigger rod extending forwardly beneath a fishing rod supported by the rod holder. A fishing rod support member is carried by the forward end of the trigger rod and is movable therewith selectively to a lower inoperative position and to an upper operative, hook setting position. One end of a jerk rod is pivotally connected to the supporting frame. The other end of the jerk rod extends forwardly and is urged upwardly toward the trigger rod by a resilient member.

Abstract: A fishing pole holder comprising a main cylindrical support having a plurality of leg members rotatably mounted thereto. Each leg member is separately rotatable about the support to allow the user to selectably incline the legs relative to the support and with the underlying surface in order to elevate the main support in a stabilized position on variously sloped underlying surfaces. A stirrup member for each rod is further rotatable about the support so as to receive a portion of an inclined fishing pole having one end contacting the underlying surface and extending over the support. The leg members are releasably fastened to the support and are stored within its hollow core allowing for easy transport of the holder from site-to-site.

Abstract: A fishing lure. The lure includes a head, body and tail giving the general appearance of a fish. The body is flexible and hollow, and defines a compartment into which bait is placed. A plurality of small openings are formed on the upper and rearward quarter of the body in a region where such body tapers downwardly to join the tail. A flap member at the forward portion of the body provides the closure means for the compartment. The operative part of a hook extends through one of the small openings so that the barb of the hook is positioned in vertically spaced relation above the body, rearwardly of the flap. String-shaped pieces of bait extend through the small openings to attract fish.

Abstract: A money operated apparatus for vending aquatic fishing bait and water in which the bait is maintained is located in a carrousel having ring-shaped compartmentized tanks. Money operable motor means is provided for moving a compartment to an indexed position beneath an unlocked sliding window for removal of the viewed bait. Further, a tap is provided for removing in a timed controlled manner some of the water supply of the apparatus for use in the purchaser's minnow bucket.

Abstract: A reusable or disposable rodent trap, having only two discrete parts, consisting of an unstable, tiltable enclosure, upon whose exterior surface is mounted a rotating door member with elongated side panels, which is prevented from rotating whenever the entrance side of the enclosure is downwardly inclined. Contact between the elongated door side panels, and the surface upon which the downwardly inclined enclosure rests, provides the rotational impediment. A rodent traversing the length of the enclosure to reach bait at the closed end causes the enclosure to incline upwardly, allowing the door to rotate closed by gravity. The rodent's return to the entrance end causes the enclosure to again assume a downward inclination. Since the door cannot be rotated in either direction when the enclosure is downwardly inclined, the rodent cannot open the door when proximate to it. The rodent, which will die of asphyxiation within hours, may be disposed of by simply inverting the trap.

Abstract: A rodent trap characterized by a rodent receiving chamber, a partition selectively movable across the chamber in a rodent eradicating relationship, a movable floor portion continually urged to an overlying position with respect to a rodent receiving tray, where the floor portion moves with the partition and cam action releases the floor portion to the aforesaid overlying position. A pressure sensitive switch holds the rodent bait and initiates sequential operation. The trap further employs a two-way solenoid for partition movement and a one-way gearing arrangement for selective floor portion position control.

Abstract: A tamper proof rodent baiting station is provided with a generally triangular shape, and rodent access entrances at two corners are connected via an entrance passageway along a first exterior wall. A central passageway is connecting to and extending from the entrance passageway towards the third corner, rodent bait retention areas are accessible from the central passageway, and rodent inaccessible openings are provided at the third corner, providing an apparent egress for rodents traveling along the central passageway.

Abstract: An implement for contact application of liquid herbicides comprises an ultra-lightweight frame supporting a wiper bar and mounted on a tall narrow wheels, and sized so that it can be drawn through a field by a motorcycle without trampling the crops. The wiper bar includes a stiff structural support member enclosed in a sponge or synthetic chamois material and a distribution conduit extending along the wiper bar with small outlet orifices for discharging herbicide liquid into the material along an upper side of the wiper bar. Liquid is supplied to the wiper bar through a gravity feed system including a tank, drip valves, and feed lines arranged to provide a head of liquid above the wiper bar to keep the distribution conduit constantly filled with liquid along its entire length even under sloping field conditions. The distribution conduit is of minimal diameter to contain a minimum weight of liquid and to restrict the flow of liquid therethrough.

Abstract: The invention is concerned with the problem of how best to infect roots of a plant with the beneficial mycorrhizal fungus. Merely mixing the inoculum of the fungus with soil or other growth medium is time-consuming and not very effective. The invention lies in the idea of positioning across the path of growth of the roots a carrier material, carrying the inoculum. The roots are then allowed to contact and penetrate the carrier material, so that they pick up the inoculum and become infected. The carrier material is integral and self-supporting. Preferably it is a sheet of cellulosic fibres coated with a layer containing the inoculum, which can also contain cellulosic fibres. Preferably peat-inoculum is used. The invention is useful in improving the growth of plants, particularly those grown in containers.

Abstract: A method is provided for asexually propagating pine trees, preferably loblolly pine, by vegatative propagation. According to this method, pine seedlings are hedged by severing the main stem and detaching the branches so that only one lateral branch is left intact and attached to the remaining main stem. The hedged seedlings are maintained under conventional growth conditions at least until elongated shoots having juvenile characteristics are obtained at the cut end of the main stem. The elongated shoots are then severed from the main stem and rooted by conventional means.

Abstract: Stabilizing mechanism for the rear end of a raised vehicle window includes a stabilizer track mounted in the door and including a vertical upper portion and a forward curving lower portion. A stabilizer link has a lower end carrying a roller captured in the track and an upper end pivoted to a sash bracket carried by the window. The link erects to a stand-up position extending between the track and the window when the window is raised. The link collapses to a stored position extending between the lower portion of the track and the sash bracket when the window is lowered. The link has an offset arm carrying a tapered pin which seats in a bushing carried by the door as the window reaches the fully raised position to stabilize the link to the door. The link and the sash bracket have interfitting tongue and groove elements which mate as the window reaches its fully raised position to stabilize the link to the window.

Abstract: A honing machine includes a specially designed, pneumatic short-stroking circuit which may be actuated to oscillate a honing tool in the bottom of a bore to remove lower bore tapers with increased speed and efficiency.

Abstract: A grinding box for reducing the size of bolt heads and nuts from one size to another, preferably from metric standard sizing to American standard sizing, is disclosed. The grinding box includes a housing with a base, sidewalls, and a cover; an abrading mechanism, such as a power driven abrading wheel, positioned within the housing and beneath the cover; an opening through the cover providing access to the abrading mechanism; and a device for placing bolt heads and nuts in contact with the abrading mechanism such that their faces are abraded and the bolt heads and nuts are reduced to a predetermined smaller size.

Abstract: Disclosed is a process which produces precision ground articles such as tungsten carbide burs without the use of skilled craftsmen. An automatic apparatus is described which is capable of performing the motions necessary to produce a machined given object and includes a control system for automated bur grinding. The process also converts geometric bur definitions into instructions that will produce the proper actions by the automated grinding.

Abstract: An air-supported structure for housing sport activities such as a golf-driving range. The structure is made of a substantially air-impervious membrane and preferably enclosed in a cable net. The structure is provided with an internal system of protective deflectors to protect the structure membrane from driven golf balls to avoid damage therefrom. An additional air-supported structure is attached to the main golf-range structure for housing therein club facilities such as a bar.

Abstract: A sealing cover for an attic floor well opening and attic stairs is provided and consists of a dome made of insulated material, a seal made of weather stripping mounted around bottom edge of the dome, a device for holding down the dome over the attic floor well opening and compressing the seal around perimeter of the attic floor well opening making the dome draft free and another device for raising up the dome from the attic floor well opening so that a person may gain access through the attic floor well opening via the attic stairs.

Abstract: A coping system for covering the top of a wall comprising an inverted U-shaped cleat which is covered by a coping panel. The cleat has an anchor leg adapted to be secured to a first side of the wall and extends upwardly above the plane of the top of the wall. The top leg of the cleat is secured to the portion extending above the top of the wall and is resiliently biased into engagement with the top of the wall. The cleat overhangs the second side of the wall and has an interior leg extending downwardly from the top leg on the inside of the wall. The cleat is covered by a coping panel which engages the anchor leg of the cleat and is fitted over the top leg and interior leg of the cleat. The cleat and panel are secured together by means of a mechanical fastener on the inside of the wall. The coping system generally includes a plurality of cleats placed at intervals along the wall and adjacent coping panels which are adapted to be attached to the cleats to enclose the top of an entire wall.

Abstract: A building framework is provided characterized by an assembly of ridge beams (2-3-4) and rectilinear concrete stringers (1-5) forming with rectilinear half-trusses (6 to 13) a network supported by concrete posts (14 to 19) some at least of the nodes of said network and, advantageously, one node out of two along each beam, not comprising the post, the terminal portion of each of the half-trusses which such a node without post comprises resting in a trough integral with one face of the beam whereas, at each of the nodes which comprises a post, the head of this latter (18) is provided with two vertical rabbets disposed in the form of a cross in which are engaged respectively the terminal portions of the half-trusses and the beam which extends to said node, continuity elements being provided in the terminal portions of the half-trusses and in the beam to provide the mechanical connections at the locations of the nodes.

Abstract: A monument for a grave consists of a head and a base both of stainless steel with the head welded to the base and provided with a recess in its front face for an insert engraved with identifying date and clamped in the recess by fastening means exposed on the rear surface of the head. The monument is connected to a concrete anchor by a member or members secured to the undersurface of the base when embedded in the concrete during the installation of the monument. The thickness of both the head and base is not less than five-eighths of an inch and not more than two inches.

Abstract: A liquid storage container, such as a swimming pool, has a vertical wall of flexible sheet material with its ends joined to make an endless loop the bottom part of which is inserted in an endless groove in a concrete foundation. The groove is formed by casting in the concrete an endless base strip, preferably metal, and a former strip of rubber or like material fitted about the base strip and extending above it, concrete within the bounds of the base strip being level with the top of the base strip, concrete outside the former strip being at the higher level of this strip which, when the concrete has set, is stripped away to leave the groove, the base strip forming its inside face, its higher outside face being a shoulder assisting the insertion of the wall bottom. A sealing strip is force-fitted between the inside face of the groove and the inserted bottom of the wall.

Abstract: A structural assemblage formed of a plurality of elongated structural elements wherein abutting elements are connected together through an interlocking arrangement. Each structural element is composed of an elongated member which in transverse cross-section is constructed of a hub from which extends a plurality of sheet material panels. Each panel includes interlocking structure to matingly engage with an adjoining panel. A sufficient number of the elongated structural elements are to be connected together to form an enclosed space defining a duct. A sufficient number of the structural elements can be utilized to form a bank of ducts.

Abstract: A compression molded door assembly is disclosed. A pair of compression molded skins are mounted on a rectangular perimeter frame which extends outwardly from the edges of the skins. The compression molded skins include a molding resin and reinforcing glass fibers. The outer surface of the skin is essentially devoid of glass fibers for a predetermined distance. A foamed core is positioned within the frame in adhering relationship to the opposed skins. A texture is molded on the exterior of the skins which simulates the grain and texture of a wood door.

Abstract: An aluminum scaffold tube filled with a predominantly closed-cell foam material selected so as to give the filled tube positive buoyancy in sea water and to resist collapse at pressures of up to at least 14062 Kg/m.sup.2.

Abstract: A vision unit which can be easily assembled into the opening in a door such as a fire door which is constructed so that it can withstand high temperatures without disintegration. The vision unit is readily assembled into an opening in the door by one person working alone. The vision unit is composed basically of two frame members, two lower support elements and a biasing element which extends between the wall surface at the top of the opening and one of the support arms of the frame. The support arms include sharp edge portions for contacting a transparent panel member. Securing means such as threaded nuts and bolts or screws pass through the door opening and fasten the frame members to the door as well as to the panel member.

Abstract: Construction forms for the erection of structural assemblies utilizing a variety of extruded or cast individualized building forms in a combined array to define a single structure composed of standard forms having a plurality of cells with the ends thereof biased to include 45.degree. male-female miter elements. Also included are accessary forms having at least one biased termination end which includes male-female miter being disposed to impart dual direction to the extruded form. Within the said forms there are structural supports for reinforcing the forms while at the same time allowing the forms to carry utility conduits and supports for cables, insulation, air, water, gas, etc.

Abstract: A system for forming structures, such as buildings, including the forming of a foundation slab, attaching flexible wall panels to the periphery of the foundation in a serial overlap configuration, installing prefabricated windows and doors, draping and attaching a membrane over the top of the wall panels, inflating the membrane upwardly to form a surface upon which to spray a foam substance, and spraying the foam to either the interior or exterior surfaces of the structure, including the roof membrane, so that an economical and energy efficient building can be provided at a low cost.

Abstract: A ventilation inset for shielded cabins and room screening devices, includes mutually parallel and spaced apart adjacent metal sheets each having slots formed therein, the slots in each of the sheets being shifted relative to the slots in the next adjacent sheet, and a multiplicity of air-permeable waveguides disposed between each two adjacent sheets providing communication between the interior of the cabins and the surroundings.

Abstract: A sterilizable, preferably fiber-free, perforated packaging material which can be utilized to make a package to hold an item which can be sterilized while it is inside the package comprising a first layer of perforated thermoplastic film, preferably extruded film, and having at least one heat-sealable surface, and a second layer of perforated thermoplastic film, preferably extruded film and having at least one heat-sealable surface, the first layer being oriented relative to the second layer so that the perforations in both of the layers are mis-aligned and at least one of the heat-sealable surfaces of one of the layers contacts at least one of the heat-sealable surfaces of the other layer; a package made from the packaging material; and a method of sterilizing an item in a package.

Abstract: Apparatus and method are provided for producing a compressed, rolled package of resilient foam material, wrapped with a flexible sheet material which is divided into a plurality of sections separated by pre-weakened areas along its length. The flexible sheet material is advanced by an upstream set of clutch-brake nip rolls and a downstream set of drive nip rolls. The two sets of nip rolls are operated in such a manner as to separate a single wrapping sheet from the length of flexible sheet material and to advance the single sheet into contact with the foam piece for feeding to a rolling and compressing packaging apparatus.