Patents Represented by Law Firm Pravel & Wilson
  • Patent number: 4113901
    Abstract: A method of manufacturing a heat-insulating polyurethane foam lining of a container having a rigid outer shell with flat inner wall surfaces that intersect to form corners of the container for transport or storage of liquefied gases is disclosed. The flat inner surfaces of the rigid outer shell of the container located in both sides of a corner of the container are covered with polyurethane foam by spraying layers of polyurethane foam onto the surfaces and on top of each other. The end parts of the layers of polyurethane foam which are located adjacent to the corner at the intersection of two surfaces are cut or ground to form a gap defined by substantially flat planes adjacent to the corner. A thin layer of a sealing material is then applied onto the flat planes of the gap and allowed to set. The sealing material may be either an epoxy resin formulation or a polyurethane resin formulation.
    Type: Grant
    Filed: June 4, 1976
    Date of Patent: September 12, 1978
    Assignee: Shell Internationale Research Maatschappij, B.V.
    Inventor: Michael H. Collins
  • Patent number: 4109945
    Abstract: A grip-seal apparatus for connecting together flowline end portions including first and second housings having alignable bores therethrough and an intermediate housing connection section for connection to each of the first and second housings and also having a bore for receiving a first flowline end portion. A radially contractable actuator sleeve is mounted within the bore of the first housing for movement radially inwardly into gripping engagement with the first flowline end portion in response to camming action; and, a sealing assembly is mounted in the bore of the second housing for movement radially inwardly into sealing engagement with the first flowline end portion in response to longitudinal movement of an activating sleeve which is mounted within the second housing bore in engagement with the sealing assembly.
    Type: Grant
    Filed: February 7, 1977
    Date of Patent: August 29, 1978
    Inventors: Luther L. Manchester, Bobby J. Reneau
  • Patent number: 4109386
    Abstract: A new and improved signal-producing pipe caliper adapted to be moved through a section of pipe to detect internal variations in the inside surface of the pipe, and to transmit analog signals corresponding to such variations for suitable recording at a location which is remote from the caliper; such caliper having individual caliper feelers which are separately removable and replaceable without disturbing the electrical signal system, whereby replacement, including size changes of the caliper feelers for accommodating different inside diameters of the pipe being calipered, and/or repair may be accomplished in the field rather than requiring the return of the caliper to the shop.
    Type: Grant
    Filed: May 29, 1975
    Date of Patent: August 29, 1978
    Assignee: John C. Kinley
    Inventors: John C. Kinley, Clifford E. Anderson, Charles W. Agee, Harry E. Dieckman
  • Patent number: 4107672
    Abstract: A new and improved apparatus for detecting cracks in the heat-insulating liner of a container for cold liquids, wherein a plurality of breakable or frangible electrical conductors and a barrier means having a woven mat of glass-fiber material are incorporated in the heat-insulating material and detector means is connected with the electrical conductors to detect breaks in the electrical conductors caused by cracks in the heat-insulating material attaining a critical length. The frangible electrical conductors may be frangible wires or stripes of conducting paint.
    Type: Grant
    Filed: January 15, 1976
    Date of Patent: August 15, 1978
    Assignee: Shell Internationale Research Maatschappij B.V.
    Inventors: Arnoldus J. Van Riemsdijk, Willem P. Hendal
  • Patent number: 4104930
    Abstract: A wire guard for protecting the final drive shaft on a crawler tractor to prevent the accumulation of wire strands on the final drive shaft between the drive sprocket and the shaft housing or case. The guard comprises overlapping and interlocking sleeve segments on the shaft housing and on the drive sprocket, respectively.
    Type: Grant
    Filed: December 17, 1976
    Date of Patent: August 8, 1978
    Inventor: Thomas E. Sanders
  • Patent number: 4099582
    Abstract: In an offshore oil well system wherein a floating well platform is connected through a telescoping cylindrical member to a marine riser extending down to the drilling area, the telescoping cylindrical member being mounted for slidable, sealable movement within the top of the marine riser, said movement occurring as a result of heave of the floating platform due to wave and tide action, a drilling fluid compensator for compensating for a change in the flow of drilling fluid out of the telescoping cylindrical member into the return system.
    Type: Grant
    Filed: April 25, 1977
    Date of Patent: July 11, 1978
    Assignee: Martin-Decker Company, a division of Gardner-Denver
    Inventor: Leo A. Bell
  • Patent number: 4100239
    Abstract: Method for making hollow plastics insulating wall panel. The plastic material, in a flowable form, is continuously forced about a core to form an enclosed central cavity or chamber. The continuous plastic material is then severed and cavity sealed in a vacuum environment before final curing of the resulting hollow insulation product.
    Type: Grant
    Filed: May 23, 1977
    Date of Patent: July 11, 1978
    Inventor: Lonnie E. Daniels, Jr.
  • Patent number: 4097202
    Abstract: An auxiliary compressor assembly for a conventional compressor having an auxiliary cylinder adapted to be releasably mounted with the conventional compressor and a head adapted to be removably mounted the auxiliary cylinder.
    Type: Grant
    Filed: June 21, 1976
    Date of Patent: June 27, 1978
    Inventor: Billy Frank Price
  • Patent number: 4094930
    Abstract: A new and improved apparatus for adding moisture to the air supplied to the air intake of an internal combustion engine, wherein a container means chamber is partially filled with a water supply leaving an air passageway thereabove and including an air inlet means for directing a first predetermined portion of incoming air into the water and a second predetermined portion into the passageway above the water to create turbulence in the water to facilitate adding moisture to the air as it flows in the passageway and is thereafter discharged to an engine intake.
    Type: Grant
    Filed: February 14, 1977
    Date of Patent: June 13, 1978
    Inventor: Henry F. W. Mueller
  • Patent number: 4087864
    Abstract: A vest is provided which patients undergoing intravenous hyperalimentation (total parenteral nutrition) treatment may wear, permitting the patients/recipients to move about and continue to receive intravenous nourishment. The vest is provided with pouches to receive bags of the hyperalimentation solution, a pocket to receive a pump to transfer the solution to the recipient's body and a pocket for a power supply for the pump. The vest permits hyperalimentation recipients who would otherwise be bed-ridden to lead a more normal and active life.
    Type: Grant
    Filed: December 30, 1976
    Date of Patent: May 9, 1978
    Assignee: Larry D. LaBove
    Inventors: Larry D. LaBove, Patrick A. Mann
  • Patent number: 4088152
    Abstract: A solenoid actuated pilot valve for handling high pressure fluids wherein a single inlet and outlet shear seals are used on the gate which is mounted for movement on roller bearings to reduce frictional loads in moving the pilot valve gate in an unbalanced condition.
    Type: Grant
    Filed: April 21, 1976
    Date of Patent: May 9, 1978
    Assignee: Vetco Offshore Industries, Inc.
    Inventor: Benton F. Baugh
  • Patent number: 4087098
    Abstract: A seal device adapted to be disposed between two surfaces, usually a shaft surface and a mechanical seal and a method for repair of a shaft and the like, wherein the shaft is formed having a longitudinal taper for receiving a seal to be snugly fitted thereabout such taper, the preferred form of such seal being suitable for mounting with a shaft and including a method for repairing a surface of the shaft which has become worn, corroded or otherwise unsuitable for providing a sealing surface to cooperate with a mechanical seal.
    Type: Grant
    Filed: May 19, 1977
    Date of Patent: May 2, 1978
    Inventor: David W. Alley
  • Patent number: 4085618
    Abstract: A sampling system for obtaining composite samples of flow streams is provided. The system includes a rotatable sampling valve which periodically removes a fixed sample volume from the stream for storage in a sample container.
    Type: Grant
    Filed: October 27, 1976
    Date of Patent: April 25, 1978
    Assignee: Collins Products Company
    Inventor: Henry R. Collins, Jr.
  • Patent number: 4085509
    Abstract: Apparatus adapted to compensate for the heaving of a floating offshore drilling platform, which heaves relative to the ocean bottom due to wave action of the water in which the platform is floating, which heave-compensation apparatus is adapted to be connected to apparatus for measuring the rate of penetration of pipe run into a well beneath the floating platform. The heave-compensating apparatus nullifies the effect of movement of the drilling platform relative to a stationary object, such as a riser pipe beneath the platform, so that false or erroneous reading on the rate of penetration measuring apparatus is prevented.
    Type: Grant
    Filed: April 7, 1976
    Date of Patent: April 25, 1978
    Assignee: Martin-Decker Company
    Inventors: Leo A. Bell, Norbert C. Peterson
  • Patent number: 4082147
    Abstract: Two embodiments of a surface controller system apparatus and their method for use with a surface controlled subsurface safety valve are disclosed. Both surface controller systems are responsive to an emergency shutdown signal for enabling closing of the subsurface safety valve when the well surface safety systems are shut-in. Once the subsurface Safety Valve has been shut-in up the system, the safety control system must be manually reset before the subsurface valve can be reopened.Both safety control system provides an enclosed reservoir or accumulator for receiving the hydraulic control fluid when the subsurface valve closes and for containing well blow-outs through either one or both control fluid conduits operably connecting the controller system with the subsurface valve. The enclosed systems are also arranged that any internal leakage of the surface control system will operate to shut-in the well with the subsurface valve.
    Type: Grant
    Filed: February 24, 1977
    Date of Patent: April 4, 1978
    Assignee: Hydril Company
    Inventors: Danny K. Wolff, James D. Mott, Kenneth W. Colvin
  • Patent number: 4082511
    Abstract: A new and improved on-site method for protecting an internal combustion engine in the field for maximizing service time by determining the change point of the lubrication oil when the TBN declines to a predetermined level. The on-site method utilizes a new field system fitted in a portable carrying case or a small cabinet and containing all the equipment necessary for analyzing lubrication oil including predetermined indicator marks on equipment for simplicity of application and for facilitating use by unskilled operators. The method includes two steps of titrating samples of lubrication oil for obtaining the TBN and TAN to indicate the change point of the lubricating oil when the TBN declines to a predetermined minimum. The method also can indicate a predicted change point so downtime for engine servicing can be scheduled. The TAN serves as an indicator of the amount of acid build-up in the lubrication oil.
    Type: Grant
    Filed: September 10, 1976
    Date of Patent: April 4, 1978
    Assignee: Pricon, Inc.
    Inventor: John E. Bedford
  • Patent number: 4082657
    Abstract: A new and improved separating device for separating particulate from a fluid stream including a plurality of screen units which are releasably held in a screen unit mounting assembly by inflatable tubes; the screen unit angular position is adjustable by adjusting the height of a plurality of adjustable support posts; and, dual vibrators are mounted with the screen unit mounting assembly and are interconnected for simultaneous vibration in mutually perpendicular directions.
    Type: Grant
    Filed: January 19, 1976
    Date of Patent: April 4, 1978
    Inventor: Ernest L. Gage
  • Patent number: 4082002
    Abstract: A gauge flange providing a means for mounting a gauge in communication with service pressure and having means for selectively closing off such fluid communication to isolate the gauge for removal and/or repair.
    Type: Grant
    Filed: March 7, 1977
    Date of Patent: April 4, 1978
    Assignee: Vetco, Inc.
    Inventor: Benton F. Baugh
  • Patent number: 4081111
    Abstract: A new and improved dispenser device and method for accurately dispensing selected volumes of fluid and for permitting repetitive dispensing of the fluid by the manipulation of a stroke-setting mechanism that selectively varies the amount of liquid pumped from the container by a pump, wherein the stroke-setting mechanism making the settings for dispensing the different volumes of liquid is manipulated from externally of the dispenser device and without the necessity of disassembly from the container with which it is used.
    Type: Grant
    Filed: October 12, 1976
    Date of Patent: March 28, 1978
    Assignee: Plasteco, Inc.
    Inventor: Kiyoshi Sandow
  • Patent number: RE29702
    Abstract: Spiral wound gasket assembly and method of making same, wherein a spiral wound gasket ring is positioned in an inner groove in a metal gauge ring and a deformation is formed in the gauge ring adjacent the groove to reduce the size of the gauge ring groove to retain the gasket ring within the groove.
    Type: Grant
    Filed: June 16, 1977
    Date of Patent: July 18, 1978
    Assignee: Lamons Metal Gasket Company
    Inventors: A. B. Owen, Bruce M. Gifford