Abstract: A process for the production of tumor angiogenetic factor and the production of antigens from a purified angiogenetic factor is shown in the present invention. The production of tumor angiogenetic factor is accomplished by injecting a material of a suitable composition to initiate production of fluid in the cavity of a living animal by inciting an inflammatory response in the cavity tissues, which response is characterized by the production of granulation tissue comprised mostly of new capillaries. After the body cavity is partly filled with the exudate, the fluid is tapped out of the cavity and purified to yield angiogenetic factor. The production of antigens is accomplished by dissolving the purified angiogenetic factor in an equal volume of distilled water, reacting the dissolved angiogenetic factor in the distilled water with a gluteraldehyde solution for at least twelve (12) hours and lyophilizing resulting mixture for storage.

Abstract: A rotatable film wrapping apparatus for wrapping a load on a conveyor with an overwrap of stretched plastic film web, having a film web pre-stretching mechanism which is provided with a constant torque by a power assistance mechanism. The power assistance mechanism comprises a stationary ring adjacent a rotary ring on which the film roll and pre-stretch mechanism are mounted, and a friction roller on the rotary ring which contacts the stationary ring to transfer rotational energy to the pre-stretch device as the rotary ring rotates. The pre-stretch mechanism comprises a downstream roller across which the film is drawn to the load at a speed which varies, and an upstream roller linked by gears to the downstream roller so that the upstream roller rotates at a fixed fraction of the speed of the downstream roller to stretch film between the rollers.

Abstract: A stretch wrapping system including apparatus and process is disclosed in which rotation of a non-cylindrical or off-centered load draws film web at a continually fluctuating speed from a film roll through a prestretching device to wrap the load. The prestretching device includes an upstream roller coupled to a braking device and a downstream roller coupled to a positive torque device. The speed of the downstream roller is proportional to the take-up speed of the web on the load and the feedback device continually senses the speed of both rollers and adjusts the braking device so that the speed ratio of the rollers produces a constant stretch of the film web above its yield point. The feedback device also continually senses the forces contributed by the braking device and the torque device and continually adjusts the torque device so that the force on the web between the downstream roller and the load is held constant at a level below the yield point of the web.

Abstract: An automated tracking process for items of manufacture and inventory, in which each item and each grouping or location of items is labeled with a unique nonvolatile machine-readable code identifying a corresponding data record maintained in a programmable digital computer. A plurality of label reading devices are utilized to report the passage or association of items to the computer, either directly in realtime or via delayed batch entry from offline storage. When an order is received, data records are reviewed to identify items with characteristics demanded by the order, containers holding items selected during the search are identified by label and location for retrieval to an area where individual items are picked from the container. Loading, retrieval and item picking may be cross-checked by computer comparison of the employee action actually taken against the action desired, and employee efficiency may be measured by recording as data records both correct and incorrect actions taken.

Abstract: A stretch wrapping system including apparatus and process is disclosed in which rotation of a noncylindrical or off-centered load draws film web at a continually fluctuating speed from a film roll through a prestretching device to wrap the load. The prestretching device includes an upstream roller coupled to a braking device and a downstream roller coupled to a positive torque device. The speed of the downstream roller is proportional to the take-up speed of the web on the load and the feedback device continually senses the speed of both rollers and adjusts the braking device so that the speed ratio of the rollers produces a constant stretch of the film web above its yield point. The feedback device also continually senses the forces contributed by the braking device and the torque device and continually adjusts the torque device so that the force on the web between the downstream roller and the load is held constant at a level below the yield point of the web.

Abstract: A lid for a pressure vessel comprising an inner skin having a seal groove formed in the periphery thereof by pressing, and a reinforcing member which is contiguous with at least a portion of the inner skin. In one embodiment, the reinforcing member comprises an L-shaped annular ring which backs up the seal groove region of the inner skin. In another embodiment the reinforcing member completely covers the inner skin. In this embodiment the central section of the inner and outer skins are part spherical and are contiguous with one another. An air gap exists radially inwardly of the seal groove between the two skins. In another embodiment the inner and outer skins are spaced apart over their central section and on insulating may be disposed in the space so formed.

Abstract: An apparatus for applying stretchable plastic film to loads for containment of the loads using two frictionally connected rollers which are held together and driven by the film web at different speeds to elongate the plastic film beyond its yield point. After the elongated film has been stretched, it is wrapped around a rotating load. The rollers are cammed apart during the beginning of the wrap so that relatively untensioned film is wrapped around the load at the beginning of the wrap. The cam force is then released and the rollers are pulled together in frictional engagement by the film web being pulled off of the film roll to stretch the film web.

Abstract: A container made of plastic material and useful for holding paint or other substances has a cylindrical wall formed, around its upper end, with an inwardly projecting flange molded in one piece with the wall. Releasably interengageable formations on the flange and a peripheral portion of a lid secure the lid. A container bottom is formed separately from the wall and is bonded to the lower end of the wall to facilitate molding of the wall and the flange. The interengageable formations comprise annular projections on the lid and the flange and wedge formations on the lid and the flange urge the annular projection on the lid radially outwardly into engagement with that on the flange, the annular projections providing a primary lock between the lid and the flange which must be pried open before a secondary lock can be released.

Abstract: A dual lumen cannula particularly for use in haemodialysis by inserting the cannula into the subclavian or femoral vein of a patient to contemporaneously remove blood from the vein for treatment and to return treated blood to the vein downstream from the point of removal. The cannula includes a pair of lumens separated by a septum. Blood is withdrawn through one of the lumens and treated blood is returned through the other lumen. The cannula is formed from a flexible thermo-plastic material and is sufficiently flexible to permit bending to conform to the shape of the vein without damage or kinking. The cannula has a peripheral generally cylindrical wall with a septum extending between spaced locations on the interior surface of the wall to define a pair of discrete lumens and at least one of the lumens is deformed at its end to facilitate insertion.

Abstract: A balloon catheter is formed by blow molding an elongated polyurethane tube so that one section of the tube has a thinned cross sectional balloon area between the distal end of tube which is sealed and its open proximal end. The balloon portion which is positioned adjacent the distal end has a thinner cross sectional area which allows a balloon to be formed if a fluid is introduced into the catheter by a syringe apparatus which is adapted to be attached to the lumen by a connection adaptor. A wire guide member is adapted to be inserted through the lumen for stretching the catheter when it is inserted into a blood vessel to stiffen the catheter and position it in a proper position. The wire guide member may also be mitred at predetermined intervals to determine the position of the catheter within the blood vessel.

Abstract: A novel balloon catheter apparatus for treatment of atherosclerotic occlusions within the cardiovascular system, comprising a catheter defining a through-going lumen, a fluid supply syringe attached to one end of the catheter for supplying fluid through the lumen, and a balloon attached to the other end of the catheter which is inflatable by forcing fluid through the lumen. A pulse generator is also attached to the catheter for generating pressure pulses in the fluid through the lumen, which pulses cause the balloon to sharply expand and contract at intervals. The pulse generator includes a pulse syringe communicating with the lumen, a spring-driven ram to contact the piston of the pulse syringe, and a cam rotor to move the ram away from the piston, thereby compressing the spring unitl the cam rotates further and the ram is released to strike the piston.

Abstract: A process for making an electrosurgical pencil with rocker switch for holding and controlling a monopolar electrosurgical scalpel blade, wherein the rocker switch pivots on the exterior of the pencil body and is isolated from the interior of the body by a flexible waterproof seal. In the process for manufacturing the electrosurgical pencil, a cable portion having at least a common conductor, first signal conductor, and second signal conductor is selected, clips are attached to each end of the three conductors of the cable portion, and a spring contact and a clip attached to one end of the common conductor are installed in a pencil body portion so that a central portion of the spring contact is held adjacent a switch seat. Clips attached to the first and second signal conductors are then mounted within the body portion beneath opposite ends of the switch seal and spaced apart from the spring contact, and a second body portion is sealed to the first body portion to create a unitary electrosurgical pencil body.