Abstract: An improved easy opening container end is disclosed of the type wherein an opening tab is attached to a wall of a can end closure at a fulcrum adjacent a primary score line. The primary score line circumscribes a pore opening panel except at a hinge area. The forward portion of the opening tab is adapted to depress the pore opening panel into the container to expose a pore opening when the opening tab is pivoted about the fulcrum. The opening tab is attached to the wall by means of a rivet. One secondary score line contiguous with the primary score line projects away from the pore opening panel on one side of the rivet and another secondary score line, also contiguous with the primary score line, projects away from the pore opening panel on the other side of the rivet.

Abstract: A method forming, in a simple manner, corner joints or the like in structures, such as articles of furniture incorporating panels of chipboard. A typical corner joint is formed using a connecting member in the form of a length cut from an extrusion of constant cruciform cross-section. Adjacent edges of two panels defining the corner are secured in respective diagonally opposite channels of four V-section channels defined by the extrusion, one of the two remaining channels which faces outwardly from the corner being occupied by a filling member. The longitudinally extending edge faces of the two webs of the cruciform cross-section which extend outwardly may be flush with the adjoining outer surfaces of the panels and the filling member to present the appearance of inlays.

Abstract: A cinch type seal having a cord with a loop at one end extending through a body with the ends of the cord on the side of the body remote from the loop. The body is movable relative to the cord and has a control port through which the cord is visible so that after the ends of the cord are removed, any unauthorized movement of the body relative to the cord will be visually apparent through the control port.

Abstract: An improved can end of the type openable without tools by a consumer moving a tab to rupture a can end along a score line, which features promotional material concealed beneath the tab until the tab is pivoted so as to open the can, is disclosed.

Abstract: Apparatus for holding small articles such as keys and which includes a body having a pair of generally similar members that are hinged together and are movable into abutting relationship with each other. A retainer has one end attached to one member and the opposite end is removably attached in a recess or recesses in one or both members immediately adjacent to the hinge so that the articles may be easily connected to or removed from the retainer when the members are spread apart. Means is provided for holding the members in abutting relationship and such members may be separated by bending one member relative to the other.

Abstract: A bidirectional fluid flow control valve has two bifurcated elastic seat rings positioned in respective undercut grooves which are spaced apart in the flow passageway of the valve body, one on either side of the axis of rotation of a butterfly valve disc having two corresponding spaced apart annular sealing surfaces. One of the undercut seat grooves may be formed in a separate detachable seal ring to facilitate assembly of the disc in the valve. The valve disc is axially symmetrical with respect to its midplane, so that operating torque and flow characteristics of the valve are the same regardless of the direction of fluid flow through the valve.

Abstract: A valve seal mechanism for cryogenic applications includes an undercut groove in a seating region of the fluid passageway in a valve body. Disposed within the groove is a shouldered resilient wear ring of polytetrafluoroethylene, the outer circumference of the shouldered portion of the wear ring having a V-shaped channel formed therein. A solid backing ring having an inner circumferential surface of wedge-shaped cross section makes an interference fit with the V-channel of the wear ring, thereby preloading the channel sides against the respective adjacent sides of the groove. A valve disc has a sealing surface which makes an interference fit with a seating surface forming the inner circumferential surface of the wear ring. Introduction of fluid under pressure and reduction of temperatures from normal ambient to cryogenic both tend to increase sealing effectiveness.

Abstract: There is provided a sealing material comprising 100 parts by weight of a fibrous material made of polyester, polyamide or the like which constitutes a non-woven cloth; and 10 to 150 parts by weight, based on the weight after dried and hardened, of one or a mixture of a styrene-butadiene polymer base latex, an acrylonitrile-butadiene polymer base latex, an acrylic ester polymer base latex, a polysiloxane base latex and/or a fluorine-contained rubber base latex impregnated in the fibrous material.

Abstract: The invention has especial utility for providing completely safe hermetic sealing of actuators extending into highly sensitive or isolative process equipment, such as that using atomic radiation. The invention uses a general principle taught by the inventor's prior U.S. Pat. No. 3,933,052. The actuator is hermetically sealed by the aid of a flexible diaphragm, and the diaphragm is made safe by pressure compensation. A sealing liquid confined on the outside of the hermetic diaphragm applies the same pressure to the outside face of the diaphragm as is applied by the process atmosphere to the inside face of the diaphragm. According to the embodiment illustrated in that patent, a diaphragm (actually a bellows) entirely separate from the actuator was exposed to the process atmosphere to apply its pressure to the sealing liquid.

Abstract: The nut is for repairing leaking bolt holes in flanged pipe joints by means of a closed-end nut having a sharp circular projection on its open end. When this sealing nut is substituted for existing nuts on bolts in the flanged joint and tightened, the nut, which is hardened, cuts a circular groove in the face of the flange that makes a metal-to-metal seal to close leaks at bolt holes. The bolts may be same diameter as the existing bolts and may be installed one at a time to accomplish the repair without reducing pressure in the pipe. Leakage from between the flanges at their perimeter is closed off by sealing in a conventional manner by welding a band around the perimeter of the flanges before the bolt hole sealing is started.

Abstract: A cylindrical film tube is to be fitted over an object. Initially the tube is in a flattened state with its opposite sides touching one another. First two vacuum suckers are contacted to the collapsed tube, one on each of its sides, so as to oppose one another. Vacuum is supplied to these suckers so that they suck and grip the tube. Then they are moved relative to one another in a direction parallel to the surfaces of the tube which they are gripping, so as to shear these surfaces relative to one another and break their contact with one another, in case they are adhering together. Then the suckers are moved apart from one another in the direction perpendicular to the film surfaces which they grip, so as to open up the tube. Lastly, the opened-up tube is fitted over the object. In a preferred embodiment, the shear direction is perpendicular to the generators of the flattened tube. A machine is also disclosed for performing this process repeatedly.

Abstract: A method for forming a closed end on a tube of heat-shrinkable film wherein the tube is placed over a cylindrical mold with one end of the tube extending beyond top end of the mold, includes forming a pattern of grooves in the mold's top end, and then heating the tube so that it shrinks and tightly contacts and covers the grooved end of the mold. Excess film protruding from the end of the tube which has shrunk against the grooved end of the mold is cut off or folded down and then this end of the tube is pressed with a heated smooth plate against the grooved end of the mold. Excess film material remaining on this end portion of the tube is squeezed into the grooves, whereby the end of the film tube is formed with a uniform thickness and with low thermal stresses thereby reducing any tendency for distortion of the closed end and providing a surface that can be more easily printed on.

Abstract: A bellows apparatus consisting essentially of a bellows main body and restriction means for restricting elongation and contraction, said restriction means comprising plural annular guide metals provided integrally to said bellows main body with a predetermined spacing therebetween in the axial direction, plural guide members secured integrally to each of said guide metals and extending in the axial direction, and plural stoppers extending integrally in the circumferential direction from the edge section in the axial direction of said guide members. Said guide members displaced with respect to each other in the circumferential direction, and their respective stoppers engage with adjacent stoppers and the annular guide metals to thus restrict elongation and contraction respectively of said bellows main body.

Abstract: A machine for fitting a sleeve seal of a flat form over a container, wherein a pair of half-mandrels are mounted on a rotating member so as to be movable apart and together. A pair of suction cups grip the sleeve seal and move apart so as to somewhat open it; then the suction cups move, together, towards the axis of the rotating member so as to put the sleeve seal over the half-mandrels, which are together; then the rotating member rotates and the half-mandrels move apart to open up the sleeve seal; and then the half-mandrels are aligned over the container, and a pushing means pushes off the sleeve seal from the half-mandrels.

Abstract: A method and machine for fitting a sleeve seal of a collapsed form over a container, wherein the sleeve seal supplied is opened halfway by suction cups disposed to a base plate, and then are opened fully by separating the distance between opening members inserted therein, which are mounted movably up and down to the base plate, until the sleeve seal is somewhat tensioned, wherein the sleeve seal is formed in the cylindrical form just above a container to be fitted by closing the distance between the opening members while the sleeve seal is held by the suction cups, wherein the container is inserted into the sleeve seal opened by a lift supporting the container, wherein the opening members are pulled out of the sleeve seal, and wherein the container fitted in the sleeve seal is transferred to a next step.

Abstract: This application is concerned with a can end comprising an end plate and a tab, the tab and end plate being so adapted to one another that by bending of the tab up by one desiring to open the can, the tab forces a section of the can to pivot inward, thus allowing access to the contents of the can without detaching any piece of the end or tab. The can end is made of aluminum, and the tab is made of steel coated with a material so chosen as to minimize or eliminate corrosion of the steel. In a preferred embodiment, the steel tab is coated with zinc.

Abstract: The present invention relates to a sealing device comprising a sealing member and a cap, said sealing member consisting of a reinforcement ring with an axial portion and radial portion, a rubber lip portion secured to the end of the radial portion, and a lip-like annular sealing piece secured to the side of the radial portion, said cap consisting of a cylinder portion and a flange portion extending inwardly in the radial direction from the cylinder portion, whereby the axial portion of said reinforcement ring engages with the inside of the cylinder portion of the cap and the annular sealing piece bears tightly against the inner surface of the flange of the cap.

Abstract: A seal for use in high temperature, aggressive environments, such as a geothermal well, including a ring-shaped element of a polymer, such as tetrafluoroethylene/perfluoro (alkyl vinyl ether) copolymer, which is substantially crystalline at room temperature, has a crystalline melt temperature above 500.degree. F., and melts at a temperature above 650.degree. F. The polymer has a molecular weight of at least about 400,000 and is characterized by molecular chain entanglements to the extent of an average of at least about ten physical entanglements per chain when the polymer is in an amorphous state. The polymer element expands in response to the high temperatures within the well, so that when the seal is located in the annular space between concentric tubular well members, it expands to press tightly against both members.