Patents Represented by Law Firm Wilkinson, Mawhinney & Theibault
  • Patent number: 4675965
    Abstract: In the manufacture of a pipe part from fibre-reinforced thermosetting resin, such as a T-piece, preformed pipe parts made of fibre-reinforced thermosetting resin are placed on a mandrel defining the inside shape of the pipe part, the external surface of the mandrel being partially covered. The space between the mandrel and the inside of the pre-formed pipe parts is sealed and the parts of the pre-formed pipe parts adjacent to the uncovered part of the mandrel are chamfered on the outside. Synthetic resin impregnated fibres are then applied to the uncovered part of the mandrel and to at least the chamfered parts of the preformed pipe parts placed on the mandrel, until the pipe part has reached the desired final shape, after which it is cured and the mandrel is removed from the finished pipe part.
    Type: Grant
    Filed: December 20, 1985
    Date of Patent: June 30, 1987
    Assignee: Wavin B.V.
    Inventors: Oege R. Offringa, Frederik Van Der Ploeg
  • Patent number: 4667204
    Abstract: A combination of two juxtaposed rhombic antennas and a V-antenna on a single, longitudinal, non-conductive support boom. The two rhombic antennas lie flat upon one another in substantially the same plane and are supported on the boom with insulating transverse spreader rods.
    Type: Grant
    Filed: April 8, 1985
    Date of Patent: May 19, 1987
    Inventor: James D. Hedrick
  • Patent number: 4664818
    Abstract: An additive for drilling in water-sensitive shales comprising a partially hydrolyzed acrylamide-acrylate copolymer, potassium chloride and a polyanionic cellulose.
    Type: Grant
    Filed: July 26, 1985
    Date of Patent: May 12, 1987
    Assignee: Newpark Drilling Fluid Inc.
    Inventors: William S. Halliday, Vincent M. Thielen
  • Patent number: 4662655
    Abstract: A pipe connection of a first and a second fibre reinforced plastic pipe by accommodating a free end portion of each pipe in a centering plastic pipe part, an adhesive layer being present between the inner side of the centering pipe part and the outer side of the free end portions. A reinforcing layer extends over the centering pipe part and over parts of the first and second pipe part adjoining the free ends of the centering pipe part, preferably the centering pipe part has a smaller wall thickness than the wall thickness of the first and second pipe parts.The free end portions have a smaller wall thickness than the wall thickness of the centering pipe part.The centering pipe part may be formed as a bend, or part of a saddle or branch saddle and consists of a reinforced thermosetting plastic material.The bend may be formed from a plurality of standard bend parts of relatively small length, e.g. or
    Type: Grant
    Filed: September 14, 1984
    Date of Patent: May 5, 1987
    Assignee: Wavin B.V.
    Inventors: Johannes H. M. Fliervoet, Oege R. Offringa
  • Patent number: 4653595
    Abstract: The present disclosure is directed to a hammer and follow block chain remote release device and method to eliminate the need of a human having to ride the pile driving leads until the follow block is separated from the hammer. This is attained by passing a chain through the follow block and over horns on the hammer. A remote release device is connected to one end of the chain and an elongated link secured to the other end of the chain is engaged with the release device and a remotely actuated coupling member is pulled to release the connection between the chain and release device to permit separation of the follow block from the hammer by passage of the chain through the follow block and over the horns on the hammer.
    Type: Grant
    Filed: August 28, 1985
    Date of Patent: March 31, 1987
    Assignee: Soloco, Inc.
    Inventor: Francis A. Hebert
  • Patent number: 4653168
    Abstract: The present disclosure is directed to a method and apparatus for taking up a board road the bottom layer of boards of which have been laid with their major axes transversely of the road and the top layer of boards of which are nailed to the bottom layer with the major axes of the boards of the top layer being longitudinally of the direction of the board road which provides a grasping and unnailing station for grasping a plurality of the longitudinally laid boards and breaking their nailed connection with the under layer of transversely laid boards, thereafter stacking said boards in layers at a stacking station to be baled into bundles, while bending the nails flat which upstand from each board as the layers of boards are formed at the stacking station and thereafter baling the stacked layers of boards into bundles and transporting the bundles of stacked boards to inventory.
    Type: Grant
    Filed: November 6, 1981
    Date of Patent: March 31, 1987
    Assignee: South Louisiana Contractors Inc.
    Inventor: Francis A. Herbert
  • Patent number: 4642940
    Abstract: The invention relates to a plastic trellis stake for supporting rows of tensioned wires 12, more particularly for supporting grape vines in vineyards, a wire support to be used in connection with this trellis stake, said stake having been provided with ribs 1a, 1b forming protuberances.A clamp 6, 7 of the wire support 5 comprises a part 6, forming seats for the protuberances of ribs 1a, 1b of the stake, and another part 7 being provided with hooks 11 for wires 12 and enclosing free ends 8 of that part 6 of the clamp.The trellis stake and the wire support are destined for supporting tendrils and twigs of plants, more particularly, grape vines in vineyards.
    Type: Grant
    Filed: November 2, 1984
    Date of Patent: February 17, 1987
    Assignees: Wavin B.V., Somevena B.V.
    Inventors: Ernst Ettema, Jan de Vries
  • Patent number: 4637158
    Abstract: The present disclosure is directed to a fishing jig having a pair of spring biased arms and a line connector therebetween and a head and hook surrounded by a plastic streamer on the free end of one arm and a spinner shaft attaching eye on the free end of the other arm. An archimedian lure having a spinner shaft having a pair of concentrically mounted archimedian screw spinners on the shaft one mounted on the shaft within the other.
    Type: Grant
    Filed: April 11, 1986
    Date of Patent: January 20, 1987
    Inventor: Dennis D. Reid
  • Patent number: 4636190
    Abstract: A web of interconnected plastic bags with gusset folds. Each bag is provided with first fold part seals (8, 9, 10, 11) and with second fold part seals (13, 14, 15, 16). Additional seals (36) extend parallel to fold edges of the foil and are connected with subsequent first and second fold part seals. The additional seals (30) are in the region between inner (4, 4a) and outer (2, 3 and 2a, 3a) fold edges.
    Type: Grant
    Filed: September 20, 1985
    Date of Patent: January 13, 1987
    Assignee: Wavin B.V.
    Inventor: Kornelis Herder
  • Patent number: 4635474
    Abstract: A smooth cylinder is rotated about its vertically mounted axis with alternative provision for a horizontally mounted sphere affixed to its top. The superposition of the circulatory air flow thus created around the cylinder, and the fluid stream vector, results in a definitive and measurable lift via the Magnus effect. The orthogonal force thus generated totally identifies the horizontal component of the spatial fluid vector; and its vertical component can be determined from a similar effect on the sphere. The sensitivity of the device can be enhanced by increasing the rotation rate; and may be further augmented by employing a second similar device with its rotation in the opposite sense to that of the first. By this expedient, it is also possible to reduce the system to a purely deterministic system by the cancellation of the effects of drag and platform motion. In addition, the device is intrinsically resilient to the otherwise detrimental effects of rainfall, temperature and pressure variations.
    Type: Grant
    Filed: February 20, 1985
    Date of Patent: January 13, 1987
    Assignee: White Scientific Consultants Inc.
    Inventor: Carl I. R. Blackwood
  • Patent number: 4634844
    Abstract: An electroweldable socket comprising a conducting wire or gauze near the inner wall of the socket, the socket being manufactured by feeding conducting metal wire or gauze to a transverse extrusion head of an extruder and cutting the pipe extruded from the extruder to a socket length.Conducting wire may be fed to the extrusion head after having been wound to a helical spiral, the helical spiral may also be formed in the extrusion head or supplied accommodated in an outer groove of a thin walled tube having a helically extending outer groove. The wire may also be supplied as a hose assembled from said wires.Gauze is supplied in a pipe form obtained from a strip.The wire may comprise sections of helical spirals of mutally different pitch.Windings or groups of windings may be short-circuited.The socket is provided with connections for connecting to an electrical source if a conducting wire is present.
    Type: Grant
    Filed: March 14, 1985
    Date of Patent: January 6, 1987
    Assignee: Wavin B.V.
    Inventors: Bernhard Lodder, Hans Overeijnder, Jan P. van Dongeren
  • Patent number: 4601393
    Abstract: A rectangular or square stackable plastic carrier, more particularly a plastic crate, comprises a support bottom part 1 formed of a bottom 2 with an upright edge 3 at its periphery.Corner columns 4 are able to fit at their top end and bottom end respectively, into the bottom and top side of a carrier disposed thereon and therebeneath.The length H of the corner columns is a multiple of the height h of the bottom part 1.The external distance L.sub.1 between two opposite set-back sides 5 of the bottom part 1 is substantially equal to or less than the internal distance L.sub.2 between two corner columns measured between the same opposite set-back sides 5, said set-back sides being provided with a handle 6. The set-back part 5 corresponds to the transverse dimension of a corner column. In the space between two corner columns 4 and the set-back part 5 free ends of corner columns of a carrier being therebeneath in a staggered relationship, may be received.
    Type: Grant
    Filed: October 16, 1984
    Date of Patent: July 22, 1986
    Assignee: Simon J. M. Veenman
    Inventors: Simon J. M. Veenman, Coenraad J. B. M. Benraad
  • Patent number: 4589410
    Abstract: The present disclosure is directed to an apparatus of the endotracheal type to facilitate rapid intubation of the trachea with an endotracheal tube, with or without a laryngoscope in an operating room or under emergency field conditions where the insert end of an endotracheal tube may be selectively curled to accommodate varying physical conditions of the person to be intubated. The amount of curl imparted to the leading insert end of the endotracheal tube is controlled externally by the person intubating the patient by pulling on a ring attached to a cord within a tunnel on the outside of the tube, the end of the cord remote from the ring being attached to the tube in area above the balloon on the insert end of the tube.
    Type: Grant
    Filed: July 15, 1985
    Date of Patent: May 20, 1986
    Inventor: Larry S. Miller
  • Patent number: 4572523
    Abstract: A pipe member having at one end a socket for the insertion of a further pipe member and a corrugation in the wall of the socket containing a packing ring of resiliently deformable material, and a retaining ring received in an internal recess in the packing ring has its packing ring formed with an outer peripheral portion to fit the contour of the corrugation and annular front and rear projections situated respectively axially in front of and to the rear of the retaining ring to co-operate with the inserted pipe member to form pressure shoulders between which the retaining ring is disposed in the central region of the packing ring, the pressure shoulders transmitting compressive forces to the outer peripheral portion of the packing ring, the outer peripheral portion of the packing ring extending over the two pressure shoulders and over the retaining ring to bear against the corrugation under compressive load.
    Type: Grant
    Filed: July 15, 1983
    Date of Patent: February 25, 1986
    Assignee: Wavin B.V.
    Inventors: Ali Guettouche, Bernhard Lodder
  • Patent number: 4568456
    Abstract: This disclosure is directed to a membrane filtration installation having a liquid inlet chamber and a liquid outlet chamber, each of which was a pipe plate and a number of support pipes between the pipe plates. The inner side of the support pipes structurally support a non-woven tube having an inner tubular membrane on its inner side. At each end the membranes with non-woven tubes are accommodated in openings in the pipe plates. Each membrane engages a sealing sleeve which is integral with a flange which cooperates with the pipe plate beside the openings. The flange is provided with a circumferential annular shoulder which clamps and sealingly engages the pipe plate and the lower edge of the wall of a liquid outlet or inlet chamber by means of a nut engaging a shoulder on the liquid chamber and which is screwed on the outer side of a pipe plate. Preferably the flange is provided with an annular rounded shoulder for engaging the lower edge of the liquid inlet or outlet chamber.
    Type: Grant
    Filed: September 9, 1983
    Date of Patent: February 4, 1986
    Assignee: Wafilin B.V.
    Inventor: Cornelis van Zon
  • Patent number: 4566408
    Abstract: The present disclosure relates to internal combustion engines of the kind comprising two working cylinders arranged in vertical side-by-side parallel relationship, there being two oppositely working pistons in each cylinder, and the movement of the four pistons being transmitted to a common drive shaft between the cylinders. The top pistons in each cylinder are connected to piston rods which in turn are secured to a crosshead and which crosshead has a pivotal connection for a connecting rod the other end of which is connected to drive a drive shaft. The lower or bottom two pistons are in like manner connected through a crosshead to the drive shaft. Fuel injection occurs at the mid-point of each cylinder between each of the two pistons in each cylinder. As to each cylinder intake air is ported in above the injector and exhaust air is ported out beneath the injector.
    Type: Grant
    Filed: February 24, 1981
    Date of Patent: January 28, 1986
    Inventor: James M. Lapeyre
  • Patent number: 4566704
    Abstract: A sealing body for a pipe connection bonded chemically and/or mechanically to a fixation part being attachable to an end portion of a socket pipe. The fixation part consists of plastic material or of reticulated elastomer.
    Type: Grant
    Filed: March 18, 1985
    Date of Patent: January 28, 1986
    Assignee: Wavin B. V.
    Inventor: Jan P. van Dongeren
  • Patent number: 4561107
    Abstract: A web of interconnected plastic bags produced by providing a tubular foil of plastic material with gusset folds with bottom fold part seals at both sides of the tubular foil. Each fold part seal connects a gusset fold part with an opposite part of the outer foil layers. Immediately after having moved the tubular foil over a predetermined distance the tubular foil is provided with a first transverse bottom seal by heatsealing opposite first fold part seals and outer foil layers to each other.
    Type: Grant
    Filed: May 24, 1982
    Date of Patent: December 24, 1985
    Assignee: Wavin B.V.
    Inventor: Kornelis Herder
  • Patent number: 4555884
    Abstract: A plastic glazing profile for mounting a glass pane in an existing wooden frame comprises a supporting face having at one end thereof an element for fixing a glass pane by means of projections. At its other end the profile comprises a glass pane abutment and opposite thereto a profile abutment edge. The profile abutment edge being the bottom of an abutment edge chamber, is provided with apertures forming outlets for water flowing from a gutter space through bores into said chamber. The profile abutment edge is able to engage a sealing strip through a projecting portion.
    Type: Grant
    Filed: February 3, 1984
    Date of Patent: December 3, 1985
    Assignee: Wavin B.V.
    Inventor: Piet van Eerden
  • Patent number: D285964
    Type: Grant
    Filed: February 19, 1985
    Date of Patent: September 30, 1986
    Inventor: Michael P. Ziebol