Abstract: An arm locking system for a vertical banner supporting column having horizontally disposed arms. The tubular column internally receives a nut having resilient fingers permitting unilateral installation of the nut adjacent an arm extending through holes formed in the column. A screw within the nut bears upon the arm forcing the arm against the edges of the associated column holes frictionally positioning the arm and column. A single nut and screw may be used to position a plurality of arms upon the arms being so related that the screw causes engagement of the arms portion's within the column to engage in a frictional relationship forcing the arms into contact with their associated hole edges.

Abstract: A paint circulation system for supplying paint to a plurality of distributors utilizing a circulating pump to circulate paint to the distributors and an injection pump operated by a closely controlled electric motor for injecting paint into the circulation network from a paint supply reservoir to maintain a predetermined pressure within the circulation network. A "leakage" passage having a predetermined restriction permits paint to leave the circulation network when the valved paint distributors are closed, and the use of an automatic timing valve within the leakage bypass permits flow rates within the circulation network to be varied. The components permit paint viscosity and volumes to be determined, settling of the paint particles within the circulation network and degradation of the circulating paint is minimized, and circulating motor wear may be determined.

Abstract: A wristband, particularly suitable for athletic use, comprising an elastic moisture absorbing sleeve having a high friction surface located over a major portion of the wristband whereby a ball, such as a football, gripped between the wristband and the wearer's body resists removal or dropping.

Abstract: The method and apparatus for printing the side edges of sheet stacks, such as books, catalogs, and the like, wherein after the stack side edge has been trimmed and cut the stack sheets are maintained in relationship under slight compression within a belt conveyor using upper and lower belts. As the retained stack is translated through the printer a sensor senses the location of the stack leading edge initiating a timing circuit which controls a rotary printing head engageable with the stack side edge to print indicia upon the side edge at the desired location. The movement of the stack rotates the printing head and a dense high quality image is produced. In an embodiment of the invention, a plurality of printing heads are mounted upon the conveyor apparatus to print the stack edge, sequentially, with a plurality of colored ink.

Abstract: The method and apparatus for producing large injection molded products and producing high tonnage injection molding apparatus utilizing tie rods interposed between the mold part supporting platens, the tie rods being removed from proximity to the mold parts upon the mold parts being opened to facilitate removal of large parts from the mold, and to facilitate mold part setup and installation. The tie rods are axially displaceable with respect to both mold part supporting platens and selectively locked and released from the platens during each molding cycle.

Abstract: A free clamp for holding the sides of a closed frame, box, chair legs, etc. during gluing or the like wherein the workpiece is engaged by clamp corner elements biased inwardly by an elastic tension cord. All of the corner elements, except one, include anti-friction rollers engaging the rubber tension member cord, and the ends of the cord are connected to an anchor corner element including a lock for receiving the elastic tension member and maintaining the tension therein. The tension member cord is mounted upon the corner elements in an asymmetrical relationship to permit the tension forces imposed upon the corner elements to be most advantageously applied to the frame sides during clamping.

Abstract: A vehicle tilt-out window with a resilient seal insert includes an annular frame which is bonded to the vehicle window opening. The frame includes a resilient double lip seal which is molded into a recess formed in the frame and the lip seal cooperates with a glass panel mounted upon the frame by homogeneous hinge tabs extending from the frame permitting the glass panel to be tilted relative to the frame for ventilation purposes and an articulated pivoting latch mounted to a homogeneous latch base locks the glass panel against the lip seal.

Abstract: A magnetic propulsion system including a plurality of specifically arranged permanent magnets and a magnetic vehicle propelled thereby along a path defined by the permanent magnets. The magnetic vehicle which is to be propelled includes a rigidly attached armature comprising several curved magnets. The propulsion system further includes two parallel walls of permanent magnets arranged so as to define the lateral sides of a vehicle path. Preferably, the walls are identical to one another except that the polarities of the magnets which define one wall are opposite from the polarities of the corresponding magnets in the opposite wall. A first wall, for example, includes a series of generally rectangular magnets, each magnet arranged with a North-to-South axis pointing longitudinally down the wall in the intended direction of vehicle travel.

Abstract: A rotatable workpiece holding collet having flexible fingers defining an interior workpiece gripping surface intersecting the collet fingers' free end, the portion of the gripping surface adjacent the collet free end being obliquely disposed to the collet axis of rotation to function as a guide surface permitting workpieces to be inserted into the collet during rotation.

Abstract: Assembly apparatus for assembling a compressible foam cushion and a flexible cover having favorable ergonomic characteristics. The apparatus includes a plate supporting the inverted cushion top having a flexible cover preliminarily positioned thereto, and a second plate engages the inverted cover bottom. A linear motor raises and lowers the second plate to selectively compress the cushion, and cover engaging rollers lift the cover adjacent the cushion sides during cushion compression to permit the cover to be attached to the cushion bottom. The cover engaging rollers are operated by a linear motor and are adjustable transverse to the direction of cushion compression to permit accommodation of various cushion configurations, and the cushion supporting plates are rotatable by a motor and selectively restrained against rotation by a brake to permit all sides of the cushion to be enclosed by the cover.

Abstract: An internal combustion engine fitting containing a thermostatically controlled valve regulating the flow therethrough is formed by two parts interconnectable by relative rotation through a bayonet type connection. The bayonet connection utilizes two stages wherein the first stage maintains the parts connected but a bypass passage defined between the parts permits the flow of coolant through the fitting around the valve to initially permit the engine coolant system to be filled. After the coolant system is filled, the fitting parts are rotated to a final closed position sealing the bypass passage permitting the thermostatic valve to control flow through the fitting during normal engine operation. The fitting parts remain sealed to the atmosphere during both stages of interconnection.

Abstract: A light archery sight using a spot of light reflected on a transparent window for aiming purposes. The window is free of barriers permitting the target and aiming spot to be quickly simultaneously observed. The light aiming spot is reflected from a transparent window obliquely related to the line of sight, and the window may be mounted upon a slide carriage movable in a direction transverse to the light path to vary the elevation of the reflected light, and hence, the line of sight elevation.

Abstract: The method and apparatus for mechanically rubblizing or breaking concrete wherein a plurality of weighted hammers are mounted upon spring biased cantilevered arms attached to a pivoted frame. Upon pivoting of the frame in an impact direction, the hammers simultaneously engage the concrete producing a linear rubblizing or breaking impact zone wherein the proximity of adjacent hammers permits adjacent hammers to multiply the rubblizing and breaking forces and vibrations such that the plurality of hammers operating together simultaneously provide improved concrete rubblizing or breaking characteristics.

Abstract: A pneumatic, disposable, temperature control blanket pressurized with a heated or cooled air comprises an inflated envelope having a lower sheet having openings formed therein for impinging the air upon a patient. Air is introduced into the blanket envelope at a single inlet port, and an interior flexible conduit or subtube located within the envelope communicates with the inlet for distributing freshly introduced air throughout the blanket length with little temperature loss.

Abstract: Traction apparatus for treating vertebral problems comprising a tripod type self-standing support having a block and tackle unit suspended from the tripod apex. The lower block includes a T-bar upon which triangular cushions are supported for location under the knees of a supine patient, and a torso encircling belt includes a strap passing through the patient's legs adjustably attachable to the lower block. The block and tackle tension member includes a tail passing from the upper block to the patient permitting the patient to raise and lower the leg supporting cushions to adjust the degree of back tension being achieved, and a lock mechanism mounted on the upper block permits automatic positioning of the degree of leg lift as determined by the tension produced in the block and tackle tail by the patient.

Abstract: A heat exchanger for a refrigeration circuit for condensing gaseous refrigerant and incorporating an integral refrigerant subcooler. The heat exchanger utilizes an oversized header communicating with the heat exchanger coils of sufficient volume to serve as a reservoir for condensed refrigerant eliminating the need for a separate receiver receptacle. Refrigerant subcooling occurs at the lower region of the receiver whereby the subcooler is automatically provided with liquified refrigerant from the condensing portion of the heat exchanger.