摘要:
METHOD FOR FORMING A FREE FLOWING POWDER BLEND OF VINYL RESINS AND SILICA BY ADDING A VOLATILE ORGANIC SOLVENT TO THE BLEND AT A RATE BELOW THE MAXIMUM ABSORPTION RATE OF THE SILICA AND THEREAFTER ADDING NON-SOLVENT TO THE MIX AT A RATE SUFFICIENT TO PREVENT RELEASE OF THE ABSORBED SOLVENT.
摘要:
A pneumatic timing device in which a timing head includes an air chamber, a diaphragm is movable relative to the timing head to effect a change in the volume of the air chamber and establish a flow of air into or out of the air chamber, a timing member is coupled for movement with the diaphragm at a rate determined by the rate of flow of air to or from the air chamber, a passage in the timing said head communicates with the air chamber for conducting the flow of air, a body of porous material is in the passage for throttling the flow to a predetermined maximum rate of flow, the body of porous material having a surface of prescribed area through which the airflow passes, and a shutter is in close engagement with the surface of the body of porous material and includes a relatively nonporous member selectively movable along the surface relative to the body to close off at least portions of the area to the airflow for selectively varying the rate of the flow to regulate the rate of movement of the timing member.
摘要:
Method and apparatus for making self-locking internally threaded fasteners in which the self-locking characteristic is derived from a free-form plastic patch of limited axial and circumferential extent adhered to the thread-defining surface of each such fastener by establishing a deposit of plastic powder upon the thread-defining surface of the fastener with the longitudinal boundaries of the deposit space axially from both ends of the surface and heating the fastener to fuse the powder deposit and establish a patch adhered to the thread-defining surface. The fasteners are each seated upon a pin having a cavity-forming portion such that a cavity is established between the pin and the fastener thereon and the deposit of plastic powder is placed within the cavity. An excess amount of plastic powder is deposited within the cavity and unwanted powder is subsequently removed from at least one end of the deposit to establish a longitudinal boundary spaced from the corresponding end of the thread-defining surface.
摘要:
A lantern includes a device for condensing light rays in at least one direction and a part-spherical, cube-corner reflector having radially directed cube axes. Light rays from a light source disposed at the focal point of the condensing device and approximately at the center of curvature of the reflector impinge on the reflector and are returned back to the source. The device condenses in at least one direction both the light emanating directly from the source and the light retrodirectively returned to the source.
摘要:
A fixture for holding curved rubber hose so that the ends thereof are substantially aligned comprising a pair of spaced members each of which is formed in the vertical plane in the configuration of an arc with said members having the same axis and a third member which is also arcuate in the vertical plane and which in the horizontal plane is in the configuration of a wedge, said third member being relatively movable toward and away from said spaced members whereby the point of the wedge can intercept the axis of the spaced members and press against a hose outside curvature to reverse the curvature of the hose.
摘要:
A thin-walled metal castle nut including circumferentially spaced slots adjacent one end thereof, an integral flange adjacent the other end thereof, a thread extending from end to end thereof and portions of the wall permanently deformed radially inwardly at axial locations between the slots and the flange, and preferably in axial alignment with the slots.
摘要:
A timing device is affixed to an actuator which is a part of a relay or a similar apparatus and which is moved between a first position and a second position. The timing device provides a timed interval between movement of the actuator and some later desired event. The timed interval may be measured from the departure of the actuator from either the first position or the second position, as selected by affixing the actuator to either one end or the other end of an actuator coupling means which couples the actuator to the timing means of the timing device.
摘要:
A threaded insert is affixed within a sandwich panel with a hardenable liquid adhesive which is forced into intimate contact with the body of the insert by helical ribs on the body which move the liquid adhesive during insertion of the insert into the panel and are engaged by the adhesive to anchor the insert upon hardening of the adhesive. The body is a composite construction including a metallic threaded member surrounded by a sleeve of molded plastic which carries the helical ribs.