Abstract: An electromagnetic pump comprising a housing having a fluid receiving chamber in communication with an inlet, a pair of fluid chambers connected by a fluid bypass passage to accommodate bubbles, one in communication with the fluid receiving chamber and the other in communication with an outlet, an electromagnet carried by the housing located external to the fluid chambers thereof, and a barrier in the form of a thin diaphragm of fluid impermeable material which hermetically isolates the electromagnet from the fluid chambers. An armature in the housing is movable within a body of magnetically permeable material which contains the bypass, has a pole portion located for magnetic attraction by the electromagnet, and has a piston portion, preferably of smaller cross-section than the pole portion, for forcing fluid from the fluid chambers and through the outlet.

Abstract: A sheet metal corrugating apparatus provided with novel upper and lower corrugating die shoe assemblies which can simultaneously corrugate all corrugations in a single piece of relatively thick steel sheet to produce a relatively flat corrugated sheet within prescribed dimensional tolerances. Each of the novel upper and lower die shoe assemblies include a plurality of individually shiftable corrugating dies mounted upon a primary bed member in such a manner that they can shift towards and away from each other, guide bars fixedly mounted on the primary bed member between the corrugating dies, and springs extending between the guide bars and shiftable dies and which bias the corrugating dies apart to their greatest extent when the die shoe assemblies are in their open position.

Abstract: A method for manufacturing a sandwich wall panel by molding, formed from an inner bearing wall portion, an outer freely expandable wall and an insulating insert sheet, the wall portions being joined together by means of one of more elongate connecting elements and being held at a distance from each other by means of one or more rigid spacers interposed between the walls. Rigid spacers (11) are positioned at the bottom of a horizontal mold which have two opposite faces (12, 13) parallel to the bottom of the mold, as well as a slanting face (17) joining said opposite faces (12, 13) together and turned outwardly of the mold, each spacer (11) being held away from the bottom of the mold at a distance substantially equal to the thickness of the inner wall portion (15) by means of a support (27), the slanting faces (17) of the spacers (11) being all oriented in the same direction.

Abstract: Method and apparatus for the oxygenation of the blood. The apparatus (14) includes a hollow membrane (16) having a central tubular portion (32) and a plurality of radially outwardly extending diffusion elements (34). The membrane is disposed within a sheath (18) and both are supported by a flexible wire (20), one end of the membrane and sheath being secured to the wire. The other end of the membrane and sheath are secured to a tube (22) through which oxygen may be supplied to the hollow membrane. The sheath and membrane may be twisted upon the wire (20) to facilitate insertion and, once inserted, they may be untwisted to resume their operable position.

Abstract: Apparatus for aerial scattering or spreading comprising a flying wing formed by an aerofoil from which a frame is suspended by a mast and on which frame there is a cockpit and at least one engine driving a propeller. A scattering device is mounted on the flying wing and comprises a laterally extending spraying or atomizer tube, at least one tank for the product to be scattered and connected to a motor-driven pump, the pump being connected to the tube, and a control for regulating the flow and/or pressure of the product to be scattered.

Abstract: A universal perimeter fence (16) for an above-ground pool. The perimeter fence consists of a plurality of three different assemblies which are fence post assemblies (18), rail assemblies (20) and mounting assemblies which include bottom post connectors (22) and top post connectors (24). The angles of the posts can be varied relative to the pools to accommodate for differing overhangs of top rails (14) and the rail assemblies are field cut the accommodate for differing spacings between the pool wall supports (12) as well as differing angles. Each of the post assemblies (18) include rail connectors (30) which have outwardly extending tubular portions (36), the inner and outer faces (80,76) being at differing angles to provide for differing diameter pools.

Abstract: A single patient ventilator/resuscitator of the type which has a timed cycle of operation, but which a patient can override in response to his physiological needs. The ventilator/resuscitator has a source of oxygen, for example a chlorate candle (26), the oxygen source being associated with a filter (32) capable of filtering toxic or harmful contaminants from the atmosphere. Fluid operated delivery and control means are associated with the oxygen source and includes an air oxygen delivery means (20) shiftable between inspiratory and expiratory modes. When the delivery means is in the inspiratory mode at least a portion of the oxygen output is delivered to the patient (14), and when the delivery means is in the expiratory mode at least a portion of the oxygen output is delivered to an accumulator (54). The fluid operated control means (24) will cause the delivery means to cycle between its inspiratory and expiratory positions in a timed cycle established by timing modules (88, 89).

Abstract: An apparatus and associated method for grooving a relatively rigid planar laminate sheet structure of the type having a relatively rigid substrate layer and a flexible sheet layer fixedly overlying the substrate layer to facilitate the folding of the sheet structure about a right corner defined by two planar surfaces of a polygonal panel during a laminating operation utilizes a circular rotatable grooving blade having teeth having cutting edges providing in cross-section, a V having an apex directed generally radially outwardly of the blade and further utilizes a member associated with the blade for defining first and second guide planes. The teeth cutting edges are adapted to form a V-sectioned groove in the laminate sheet structure as the blade is rotated within a plane oriented generally perpendicular to the plane of the laminate sheet and moved in operative grooving engagement across the laminate sheet.

Abstract: A top insertion, tray stacking wire with coplanar feet extending outwardly in opposite directions at the bottom of the wire with a prong extending laterally outward from the end of each foot at a substantial angle to the plane of the feet. The wire is held in a horizontal disposition for insertion of the feet and attached prongs into a slot aperture in the top edge of a corrugated paperboard tray and the like having a double wall construction. The wire includes a U-shaped body attached to the divergent feet wherein the legs thereof resiliently separate from one another to abut the ends of the slot aperture with the divergent wire feet projecting underneath the ends of the aperture. While the U-shaped body is being pivoted to assume a vertical orientation, the prongs bite into the corrugations of the adjacent wall, simultaneously pressing the pivoting feet into firm engagement against the wall adjacent thereto whereby the stacking wire is maintained in a firm, upright disposition.

Abstract: This invention relates to cytotoxic compounds. More particularly, this invention relates to conjugates of antitumor agents, and thiophospholipids exhibiting enhanced antitumor activity to methods for producing such compounds and to pharmaceutical compositions containing cytotoxically effective amounts of such compounds as a primary effective ingredient.

Abstract: A helmet assembly (10) provided with either single or dual visor mechanisms (14, 16) and low profile right and left side pivot assembly (18, 20). A low profile visor actuating arm assembly (36, 38) is associated with each visor and the left hand pivot shaft (46) of the left side pivot assemblies (20). Each visor actuating arm assembly is capable of being readily manipulated by the left hand of a pilot so that the associated visor can be moved between fully raised and completely down positions, the visor actuating arm assembly also cooperating with the pivot shaft (46) to positively lock the visor in either of its fully raised or completely down positions. A pivot hub assembly (47) is also disclosed for securing the pivot shaft (46) to the helmet (12).

Abstract: The present invention provides a method and composition for preserving wood and other cellulose based materials against destructive organisms responsible for rot and decay, namely fungus and insects. The composition comprises an aqueous ammoniacal solution of a preservative metal compound and an organic acid selected from the group consisting of aliphatic dicarboxylic acids containing 2-10 carbon atoms per molecule, aliphatic mono, di or tricarboxylic hydroxy acids containing 2-6 carbon atoms per molecule or a mixture of these acids and/or their salts. The preservative composition may be applied by dipping, soaking, spraying, brushing or by any other well known means including vacuum and/or pressure applications.

Abstract: An office accessory system for use on both horizontal and vertical surfaces and in both conventional and open-plan environments. Accessories are provided, each being self-supporting on a horizontal surface, one of them being self-supporting on a horizontal surface in either a horizontal or a vertical orientation. The accessories have recesses for receiving support hooks engageable with the arm of a cantilever support. The cantilever support has an attaching bracket which is selectively engageable with the side channels found on a wide variety of open plan wall panels for mounting the accessories thereon in a vertical orientation.

Abstract: A rail pad for electrically and dynamically insulating the rail from the rail tie. Grooves or recesses are provided for force attenuation such that the overall volume is reduced by at least 15%. To improve durability particularly in curved track sections at least the field edge of the pad has in a section extending 20 mm on from the field edge less than 10% volume reduction by grooves or recesses.

Abstract: A mobile snow-disposal unit having a vehicle including a sealable snow-collection receptacle having a water-holding internal compartment and an engine for propelling the vehicle utilizes a vacuum pump for lowering the internal pressure of the receptacle, when sealed, and a heat exchange system for routing waste heat from the engine to the internal compartment. By lowering the internal pressure of the receptacle so that the boiling temperature of water held by the internal compartment is about equal to the temperature of the waste heat entering the internal compartment, water held within the internal compartment is converted to steam for readily melting the collected snow.

Abstract: A helmet shell assembly wherein a helmet shell is provided with a covering of normally flat thermoplastic material which is disposed on the shell in such a manner as to have a minimum number of seams. The assembly is made by inserting a support member (44) into a helmet shell (12), positioning the shell and support into a cavity (50) of a forming fixture (46), then draping a sheet of softened thermoplastic material (16) [which is supported by a frame (48)] over one side of the shell, vacuum forming the sheet (16) about the side of the shell, and then trimming the sheet after it has set. The other side of the helmet shell is then covered by repeating the above steps, and then a tape is applied over the length of the helmet to cover the exposed seams. A protective coating and an edge roll may then be applied. The shell may initially be covered with a surface finish.

Abstract: Ultrasonic pest control apparatus comprising an elongated housing having opposite ends, a sound generator carried by the housing adjacent one end thereof and including at least one transducer for providing output sound waves when driven by an electrical signal, the sound waves being directed outwardly from the end of the housing and having a frequency normally inaudible to humans and intolerable by pests such as rodents and the like, and an electrical connector element at the other end of the housing adapted to be inserted manually into a standard electrical outlet receptacle commonly found in buildings and the like. The connector can be of the prong type or of the threaded type commonly found on the base of electric lamps. The transducer preferably is driven in a manner such that the generated sound waves are a composite output in the form of a random pattern of harmonies.