Patents Examined by J. Howard Flint, Jr.
  • Apparatus for manufacturing ovenable paperboard articles
    Patent number: 4534725
    Abstract: A method and apparatus are disclosed for imparting a desired shape to a paperboard blank. The blank is formed between two dies for a sufficient length of time and with sufficient force to set the form, while moving the dies in tandem along a predetermined portion of a reciprocation path. Because the formed blank remains in dwell while the dies are moving in tandem, it is not necessary to hold the dies stationary to ensure permanent formation of the blank. This allows greater production speeds.
    Type: Grant
    Filed: April 1, 1982
    Date of Patent: August 13, 1985
    Assignee: International Paper Company
    Inventors: Donald J. Hemmelgarn, Arthur L. Grow
  • Mold opening and closing mechanism for a tire vulcanizer
    Patent number: 4533304
    Abstract: A tire vulcanizer wherein a movable upper mold is vertically moved and opened and closed relative to a fixed mold, and a ball-screw shaft construction is used as a vertically moving and opening and closing mechanism. Resilient buffer devices such as belleville springs or the like are resiliently supported on both upper and lower ends of the screw shaft. An improved slide guide construction for moving the upper mold up and down is also disclosed. A slide support is provided on an engaging end with respect to the guide of the slide, and the slide support is brought into engagement with the guide in such a way that a clearance therebetween may be adjusted.
    Type: Grant
    Filed: April 25, 1984
    Date of Patent: August 6, 1985
    Assignee: Kabushiki Kaisha Kobe Seiko Sho
    Inventors: Itaru Amano, Seisuke Fukumura
  • Mixing nozzle for two reactant components
    Patent number: 4533521
    Abstract: A mixing and extruding nozzle for two reactant components has a housing formed with a mixing chamber, a pair of parallel and oppositely directed faces flanking and turned away from the chamber, respective injection passages having inner ends opening into the chamber and outer ends opening at the respective faces, and respective outwardly open grooves in the faces offset from the passages. A valve-type rocker pivotal relative to the housing about an axis perpendicular to and traversing the two faces and offset from the passages and grooves has two like halves each formed with a face confronting the respective housing face and a feed passage opening at the respective rocker face offset from the axis.
    Type: Grant
    Filed: June 29, 1984
    Date of Patent: August 6, 1985
    Assignee: Battenfeld Maschinenfabrik GmbH
    Inventor: Norbert Feist
  • Press with columns compensated for deformation during tightening
    Patent number: 4533313
    Abstract: Each column of a press comprises a core rod 2 slidably surrounded by a sleeve 3. The tightening jack 10 associated with the column in question acts on the mobile plate 8 to tighten the mould 11, 12. The upper plate 4 transmits the reaction to the auxiliary jack 5-6 which, bearing on the core 2, applies to the plate 4 a force equal to that developed by the auxiliary jack. In this way the sleeve is theoretically subjected to no effort. The jacks 9, 10 and 5-6 may be supplied in parallel. If the tightening jack 9-10 is not coaxial to the column, one may be content with an approximate solution, or one may use as auxiliary jack a multiple jack in tandem, suitably supplied, or the deformations of the sleeve may be detected and the auxiliary jack controlled so that it cancels them.
    Type: Grant
    Filed: June 22, 1984
    Date of Patent: August 6, 1985
    Inventor: Pierre Poncet
  • Apparatus for producing deep, conical or cylindrical ceramic hollow bodies from a powdered or granular pressed mass by isostatic compression
    Patent number: 4533311
    Abstract: A method and apparatus for the manufacture of deep, conical or cylindrical ceramic hollow bodies made of a powdered or granular pressed mass by isostatic compression, and with projections, such as handles, grips or the like provided on the hollow body being pressed simultaneously with the hollow body. To facilitate introduction of the pressing mass into the press chambers provided in the press mold for both the hollow body and the projection, the pressing mass, in addition to falling freely, is introduced into the respective press chambers under the influence of a vacuum.
    Type: Grant
    Filed: February 9, 1984
    Date of Patent: August 6, 1985
    Assignee: Laeis-Werke AG
    Inventor: Wilhelm von Karchowski
  • Apparatus for thermoforming dome-shaped actuating elements for membrane switches
    Patent number: 4533555
    Abstract: An apparatus is provided for thermoforming a plurality of protrusions in a plastic sheet. The thermoforming apparatus comprises a pneumatic press having a pair of male and female die plates with respective projections and cavities. One of the die plates is heated. The other die plate is cooled. The cooled die plate is provided with vacuum to ensure that the thermoformed plastic sheet is held against the cooled die plate upon the opening of the press to, in turn, ensure the cooling of the plastic sheet prior to its removal.
    Type: Grant
    Filed: May 9, 1984
    Date of Patent: August 6, 1985
    Assignee: RCA Corporation
    Inventor: George E. Harris
  • Injection molding machine
    Patent number: 4531704
    Abstract: In an injection moulding machine for the production of undercut mouldings, such as plastics bumpers or fenders for automobiles, the injection mould comprises two relatively movable mould halves (1, 2) and a plurality of mould followers (4, 5, 6, 15, 16, 17) for defining the mould cavity when the mould is closed. The mould followers are all mounted on one mould half (1) and are displaceable relative thereto in directions transverse to the direction (3) in which the mould halves move relative to each other to release the moulding when the mould is opened. The other mould half (2) has recesses (28) for engaging and locating the external surfaces of the mould followers when the mould is closed for a moulding operation.
    Type: Grant
    Filed: December 21, 1983
    Date of Patent: July 30, 1985
    Assignee: Devalit-Plastik van Deest GmbH & Co. KG
    Inventor: Ernst A. Matthei
  • Apparatus for forming particles into shaped articles
    Patent number: 4531903
    Abstract: Method and apparatus for forming fine, relatively dry particles into shaped refractory, ceramic and porcelain preforms or similar compacted articles by confining the loose particles in a shaped enclosure having at least one movable, preloaded side to maintain the particles in a loose but contiguous mass, accelerating the mass particles and at least a portion of the mold in such a manner as to induce a positive or negative acceleration of the mass of a magnitude at least 25 to 50 G's, depending upon the particle composition, and preferably in the range of 500 G's to 5000 G's, or greater, again depending on the particle composition in order that each particle undergoes a force generating impact with adjacent particles to homogeneously compact and fuse the adjacent particles one to the other in a nonbridging manner.
    Type: Grant
    Filed: June 19, 1984
    Date of Patent: July 30, 1985
    Assignee: SXD Refractories, Inc.
    Inventors: David J. Frey, Keith E. Wier
  • Single facer corrugating machine
    Patent number: 4531996
    Abstract: A single facer corrugating machine having an elongated fluted roller, a series of fluted roll segments which cooperate with the fluted roller to form a corrugated paper medium, and a series of smooth surfaced pressure roll segments which cooperate with the fluted roller to facilitate application of a liner to the corrugated medium to yield a single faced corrugated paper product. Each of the roll segments is independently supported and can be independently positively located relative to the fluted roller. The roll segments can be nip loaded independently of one another, and each roll segment is independently position adjustable relative to the fluted roller to facilitate phase control across the width of the machine of roll interactions associated with corrugation formation and liner application to control and reduce overall machine noise and vibration.
    Type: Grant
    Filed: May 9, 1984
    Date of Patent: July 30, 1985
    Assignee: Corrugating Roll Corporation
    Inventor: Robert J. Sukenik
  • Apparatus for making improved tire curing bladders
    Patent number: 4531902
    Abstract: The quality and useful life of curing bladders used in standard "Bag-O-Matic" tire vulcanizing presses is greatly improved by replacing the standard split two-piece core of the bladder mold with a unitary core which forms a disc-like rubber diaphragm below the core and integral with the rubber curing bladder at the periphery of the core. A unique base plate fits in the lower mold half below the core and has a grooved upper surface to hold the diaphragm in place so that the core can be removed manually or automatically with the assistance of internal air pressure.
    Type: Grant
    Filed: November 14, 1983
    Date of Patent: July 30, 1985
    Assignee: The B. F. Goodrich Company
    Inventors: Terrence M. Stuhldreher, Rene L. Rockarts
  • Composite and durable forming model with permeability
    Patent number: 4531705
    Abstract: Proposed models are used for forming into destined shapes liquid, slurry, soft, sheet or lump materials, and are provided with endurance for many times of use and excellent permeability. A basic feature is that aggregates are ferrous or non-ferrous metallic grains and ceramic grains, to which a binder contained in evaporating or consumable substance is added and kneaded, and sintered. The mode has a close hardened layer scattered with metallic oxides on at least a shell. The hardened layer has fine air vents in its thickness. The whole body of a model is 5 to 60% of porosity and more than 100 Kg/cm.sup.2 of compression strength.
    Type: Grant
    Filed: April 6, 1984
    Date of Patent: July 30, 1985
    Assignee: Sinto Kogio, Ltd.
    Inventors: Takeo Nakagawa, Hiroyuki Noguchi, Akira Yanagisawa, Toyoji Fuma, Masanobu Tsuchida, Takehiro Inagaki, Yoshikazu Hayashi
  • Injection molding peripheral opening core ring gate
    Patent number: 4530654
    Abstract: This invention relates to an improved core ring gated injection molding system. The valve pin has a tip portion which joins a larger diameter stem portion at a tapered shoulder and extends through the cavity into the mold platen on the other side. The tip portion of the valve pin is substantially smaller in diameter than the gate through the cavity plate, thus providing for the flow of melt through the gate around it when the valve pin is in the retracted open position. In the forward closed position, the tapered shoulder seats in the gate to provide a seal. By providing for operation in reverse directions to previous core ring gated systems, this increases cooling to the mold platen in the closed position and decreases it in the open position.
    Type: Grant
    Filed: May 29, 1984
    Date of Patent: July 23, 1985
    Assignee: Mold-Masters Limited
    Inventor: Thomas J. Rose
  • Apparatus for sizing extruded plastics sections
    Patent number: 4530650
    Abstract: An apparatus for sizing extruded plastics sections is proposed in which, in order to increase the heat transfer capacity between the hot plastics mass of the section and a cooling vehicle in a reduced space and to allow high production rates, there is interposed between metal block-type sizing gauges a cooling tank to be traversed by the section to be cooled between one sizing gauge portion and a subsequent sizing gauge portion. In this tank, which can also be placed under vacuum, the section is subjected to the action of a cooling fluid such as water or air which acts directly on its outer walls.
    Type: Grant
    Filed: July 9, 1984
    Date of Patent: July 23, 1985
    Assignee: Milani Resine S.p.A.
    Inventor: Francesco Milani
  • Mold for molding wheel cover having spoke-like portions
    Patent number: 4530484
    Abstract: A mold for molding a wheel cover for a vehicle road wheel by injection molding of a synthetic resin or die casting of a light metal alloy, the wheel cover being a one-piece member having spoke-like portions extending obliquely with respect to both the center axis and radii of the wheel cover. To form the spoke-like portions each as a straightly extending portion, one of the two mold members which can be brought into contact with each other to provide cavities therebetween has a portion in the form of a truncated pyramid and the other is recessed to have a plurality of flat faces which are respectively opposite to and can mate with the flat side faces of the truncated pryamid, and these side faces or the flat faces in the opposite mold member, or both, are formed with elongate and straight grooves in which the spoke-like portions are formed.
    Type: Grant
    Filed: June 22, 1984
    Date of Patent: July 23, 1985
    Assignees: Nissan Motor Co., Ltd., Hashimoto Forming Kogyo Co., Ltd.
    Inventor: Yuko Baba
  • Apparatus for forming embossed acoustical tile
    Patent number: 4530653
    Abstract: Apparatus for making an acoustical tile having a pattern of raised portions and portions in relief on the tile surface is provided by a hollow embossing roll containing the pattern in reverse and interstices communicating from the surface of the roll into the hollow interior of the roll. In operation the roll contacts the formable, acoustical tile fiber composition pulp with sufficient force as to disspell the pulp, vent air that may be between the roll and the pulp surface through the roll, and produce a reversed pattern of the roll upon the pulp surface, then releasing the pulp from the surface of the roll by rotation of the roll.
    Type: Grant
    Filed: June 27, 1984
    Date of Patent: July 23, 1985
    Assignee: United States Gypsum Company
    Inventor: Yasuo Ishii
  • Concrete segment molding flask
    Patent number: 4529162
    Abstract: Conventional concrete segment molding flasks are constituted from separate bottom molding flasks and side molding flasks. Since the concrete segment molding flasks are respectively assembled with connecting bolts, and the bottom and side molding flasks are usually formed of steel material so that they are too heavy to manually handle with ease, it is extremely troublesome to assemble, disassemble and locate the molding flasks. This invention proposes to resolve said prior problems and aims to provide a concrete segment molding flask which can be easily assembled, disassembled and located as the bottom and side molding flasks are interconnected.
    Type: Grant
    Filed: October 19, 1983
    Date of Patent: July 16, 1985
    Inventor: Junichi Tsuzuki
  • Process and device for manufacturing concrete structural elements
    Patent number: 4529567
    Abstract: The invention relates to an apparatus and method for manufacturing concrete structural elements. In order to manufacture the elements, setting of the concrete takes place in a casing (1), while the concrete is compressed with an axial pressure of at least 50 MPa and the casing is surrounded with a hoop (2,3) so as to create transverse planes of pressure.
    Type: Grant
    Filed: June 15, 1984
    Date of Patent: July 16, 1985
    Assignee: Bouygues
    Inventor: Pierre Richard
  • Combination of form panels and form lock devices
    Patent number: 4529163
    Abstract: The invention relates to a combination of two factory-built forms consisting of two form panels set within sectional steel frames having longitudinal channels with flanks forming an acute angle to each other and having outer flanges and ribs; in the locked and tightened state the ribs are in contact with each other; the combination also consists of a form lock device which forces the steel frames tightly against each other and brings the outer flanges into alignment.
    Type: Grant
    Filed: April 20, 1984
    Date of Patent: July 16, 1985
    Inventor: Gerhard Dingler
  • Tire curing press with pop-up, rotating nozzle
    Patent number: 4527946
    Abstract: A pop-up, rotating nozzle in a tire curing press provides for dispersed and uniform introduction of fluid media into the upper containment portion of a curing and shaping bladder during tire cure and cooling, and yet allows for relatively close spacing of upper and lower bladder clamps such as during bladder insertion and stripping operations. The nozzle has an outlet head in communication with the interior of the bladder and a supply stem mounted in a lower bladder clamp and porting assembly of the press for both axial and rotational movement. The nozzle is movable against a spring biasing force by the upper bladder clamp to a lowermost retracted position which allows the bladder clamps to be axially spaced apart a distance substantially less than their axial spacing during cure.
    Type: Grant
    Filed: January 23, 1984
    Date of Patent: July 9, 1985
    Assignee: NRM Corporation
    Inventors: Anand P. Singh, Virgil Y. Blosser, Thomas A. Crumbacher
  • High pressure molding riser
    Patent number: 4526338
    Abstract: A casting riser including a top support member and an internal support member to receive the high pressure molding forces to enable the casting riser to withstand the high pressure molding forces.
    Type: Grant
    Filed: April 23, 1984
    Date of Patent: July 2, 1985
    Assignee: General Foundry Products Corporation
    Inventor: Dennis J. Reiland