Segmented Ring Patents (Class 285/411)
  • Patent number: 6367849
    Abstract: A joint (and method) connects synthetic resin corrugated pipes, each of the corrugated pipes including a pipe wall having sectionally rectangular wall portions and sectionally circular wall portions disposed alternately in a longitudinal direction of the corrugated pipe. The sectionally circular wall portions each include an annular-shaped protrusion projecting outwardly from the sectionally circular wall portions disposed substantially at a center of the sectionally circular wall portion between adjacent sectionally rectangular wall portions in the longitudinal direction.
    Type: Grant
    Filed: May 23, 2000
    Date of Patent: April 9, 2002
    Assignee: Totaku Industries, Inc.
    Inventors: Yoshiaki Tatsuta, Kazuya Yamashita, Takeshi Mochiduki, Kentaro Takenaka
  • Patent number: 6367843
    Abstract: At least one fastener and its method of use to securely fasten joints, preferably in pressure vessels, pipes, and other structures, intended to isolate internal volumes from the external environment, or in structural joints. The fastener preferably comprises at least one force reacting or force producing element capable of maintaining a gap between the end of at least one clamp segment of a clamp connector used on flanged structures to isolate a structure's internal environment from its external environment to provide controlled contact with the flange members wherein uniform seal integrity is secured and contact surface wear is dispelled. In a preferred method of use, each fastener is used in conjunction with delayed cokers, wherein extremely high temperature and relatively low pressures are generated.
    Type: Grant
    Filed: April 13, 1999
    Date of Patent: April 9, 2002
    Assignee: Automated Connectors Holdings, L.B.
    Inventor: Kelly Fetzer
  • Patent number: 6264251
    Abstract: A segmented flange coupler is disclosed for connecting the free end of a grooved pipe to a fitting having a flange connector. The segmented flange coupler is formed of end-to-end connected individual coupling segments which are configured to move both circumferentially and radially into concentricity during the tightening of their connecting bolts. This is achieved by providing complementary surfaces of revolution about their overlapped bolt receiving apertures. These surfaces of revolution are preferably in the form of mating convex and concave conical surfaces.
    Type: Grant
    Filed: October 15, 1999
    Date of Patent: July 24, 2001
    Assignee: Victaulic Company of America
    Inventors: Donald R. Kunsman, Douglas R. Dole
  • Patent number: 6050545
    Abstract: There is disclosed herein a bulk container valve adapted for use with a bulk container having a tubular spout. The valve comprises a plastic housing having an interior chamber connecting a front port to a rear port. The housing includes a rear fitting about the rear port for connection to the spout, in use, and a front fitting about the front port. A generally spherical valve element is rotationally supported in the interior chamber for movement between a valve open position and a valve closed position. A handle includes a stem. The stem extends through an opening in the housing and is operatively mated with the valve element for selective rotation of the valve element. A fastener is secured to the stem within the interior chamber for securing the handle to the housing.
    Type: Grant
    Filed: January 21, 1998
    Date of Patent: April 18, 2000
    Inventor: Michael D. Stolzman
  • Patent number: 6030006
    Abstract: A clamp device for joining a flanged connection. The clamp device has a plurality of arcuate segments, wherein each of the arcuate segments has two ends. A pivot couples at least one end of each arcuate segment to another of the arcuate segments to produce a chain of arcuate segments that extend from a first end to a second end. The chain of arcuate segments is configurable into an annular structure when the first end is brought into abutment with the second end. A torsion spring is disposed around each pivot. Each torsion spring acts to bias the arcuate segments into the configuration that produces the annular structure. A rocking bolt is coupled to the second end of the chain of arcuate segments. The rocking bolt is joined to the second end by a second pivot and is positionable throughout a predetermined range. A biasing element is provided for biasing the rocking bolt into one position within the predetermined range.
    Type: Grant
    Filed: February 23, 1998
    Date of Patent: February 29, 2000
    Inventor: Peter Lin
  • Patent number: 5967564
    Abstract: The connection or coupling between two equipments such as pipes (1 and 2) by a clamp (17) involves the use of a second clamp (8), tightened around the fixed pipe (1) and carrying a cradle (9) for supporting the clamp (17). This arrangement makes it possible to place the coupling parts in succession and to release them immediately afterwards. The cradle (9) also prevents the clamp (17) from tilting when its clamping screw (22) is turned. Finally, a sleeve (27) maintains the extension position of the pipes (1, 2), while also centering the sealing joint (32). All these advantages make it possible to correctly and easily assemble the parts with a single remote manipulator in the hot cells of nuclear installations.
    Type: Grant
    Filed: April 23, 1998
    Date of Patent: October 19, 1999
    Assignee: Compagnie Generale des Matieres Nucleaires
    Inventor: Jacques Gaucherot
  • Patent number: 5951066
    Abstract: A system for connecting wellhead components that are abutted in axial alignment in which each component has an increased external diameter circumferential hub portion at an end thereof, the system including a toroidal connector surrounding adjacently positioned hub portions, a plurality of C-segments retained by the toroidal connector and positioning bolts received in spaced apart threaded opening in the connector, each bolt having an inner end in engagement with a C-segment and an outer end extending radially of and exteriorly of the connector by which each C-segment may be inwardly radially advanced to engage opposed sides of the hubs.
    Type: Grant
    Filed: February 23, 1998
    Date of Patent: September 14, 1999
    Assignee: ERC Industries, Inc.
    Inventors: F. Jeffery Lane, Heinrich H. Lang
  • Patent number: 5908210
    Abstract: The present invention relates to an apparatus for securely fastening joints in pressure vessels, pipes, and other structures intended to isolate internal volumes from the external environment. It can join a blank cover to a pressure vessel or it can join tubular members. It may be used in any application currently utilizing standard bolted flanges. It provides a flange retaining clamp for remotely disconnecting and remotely connecting flange members disposed on a pressure vessel, in which one of the flange members is disposed on the pressure vessel and the second flange hub end is applied in a gasketed, sealing relationship thereto, in which the flange hub ends each have a outwardly extending flange hub, wherein, the clamp has at least two clamp segments which are moveable from a closed, sealing, flange member retaining position to an open, unsealed, flange member liberating position.
    Type: Grant
    Filed: February 3, 1997
    Date of Patent: June 1, 1999
    Inventor: Kelly Fetzer
  • Patent number: 5873611
    Abstract: A clamping device is disclosed for coupling peripheral flanges of a pair of tubular members together. The clamping device has a retaining member for coupling the peripheral flanges of the tubular member together, with first and second coupling ends being releasably coupled together by a latch assembly from an open position to a closed position. The latch assembly has a connecting member with a pivoting end and an anchoring end. The pivoting end of the connecting member is pivotally coupled to the first coupling end about a pivot axis between an unengaged position where the anchoring end is spaced from the second coupling end and an engaged position where the anchoring end is removably coupled to the second coupling end. The latch assembly further has a retention member coupled to the pivoting end of the connecting member for retaining the connecting member to the first coupling end.
    Type: Grant
    Filed: March 10, 1997
    Date of Patent: February 23, 1999
    Assignee: EG&G Pressure Science, Inc.
    Inventors: Daniel T. Munley, Jeffrey E. Swensen, H. Steve Graham
  • Patent number: 5868442
    Abstract: The subject invention relates to a type of pipe joints fixing ring, comprising two master fixing blocks, an adjusting bolt connecting the two master fixing blocks, several slave fixing blocks, several connecting levers linking the master and slave fixing blocks, and several rollers fixed inside the master and slave fixing blocks, the inside two surfaces of said rollers are tapered planes, two pipe joints and a center ring with an O-ring that are clamped inside the master fixing blocks and the slave fixing blocks, the surfaces contacting the two joints and the rollers are tapered planes, so that by rotating to adjust the distance between the two master fixing blocks, the tapered planes on the rollers inside the master fixing blocks and the slave fixing blocks will push the tapered planes on the two joints, thus the two joints are securely tightened, to enable such integral features as evenly distributed tightening force, labor-saving tightening process and wider range of applications.
    Type: Grant
    Filed: July 7, 1997
    Date of Patent: February 9, 1999
    Inventor: Yen-Tseng Lin
  • Patent number: 5842526
    Abstract: A combination duct/extinguishing system includes a duct and plural sprinkler head assembly and mounting systems on the duct. Each sprinkler head assembly and mounting system includes port structure mounted on the duct defining a passageway into an area internally of the duct, sprinkler head structure having one end associated with a corresponding port structure, and another end associated with an extinguishing media, and collar structure for removable engaging the port structure and the sprinkler head structure to fixedly hold the sprinkler head in the area internally of the duct. Preferably, the collar structure includes two halves hingedly joined, each having wall structure defining a groove for receiving a portion of the port structure and the sprinkler head structure.
    Type: Grant
    Filed: September 26, 1995
    Date of Patent: December 1, 1998
    Inventors: Robert C. Archer, Paul Clark
  • Patent number: 5707089
    Abstract: The device contains a tension chain with link plates (10) and thrust pieces (7) which are joined to one another via joints (9). Each thrust piece (7) has two flanks (5, 6) for abutting flanges (1, 2) of the pipe connection. The first of flanks (5) is tilted to plane (E1) which is perpendicular to the axes of joints (9) at a first angle. Second flank (6) with this angle forms a second smaller angle. The second angle can be equal to zero. Furthermore, the device contains tensioning device (21) for drawing two adjacent joints (9) against one another. Tensioning device (21) is arranged such that tensile forces (A) exerted by it run on the side of plane (E1) which faces away from second flank (6). Plane (E1) is perpendicular to the axes of joints (9) and passes though edge (B) of first flank (5) which is nearer second flank (6). The device is suitable for flanges (1, 2) which are differently conical or of which one (2) can also be flat externally.
    Type: Grant
    Filed: August 13, 1996
    Date of Patent: January 13, 1998
    Inventor: Heinrich Fend
  • Patent number: 5653481
    Abstract: A clamp with a live loading clamp nut assembly is provided for pipe joints and the like. The nut assembly includes a body member movable within a cage. A plurality of springs, such as spring washers, are employed in the cage to provide a stored spring energy to maintain the clamping pressure in a desired range. The clamping arrangement preferably includes a pair of jaws, hinged together at one end so that the other ends of the jaws are moved toward and away from one another. The nut assembly presses the free ends of the jaws together to maintain a desired tightness in the pipe joint.
    Type: Grant
    Filed: February 9, 1996
    Date of Patent: August 5, 1997
    Assignee: United Dominion Industries, Inc.
    Inventor: Darold S. Alderman
  • Patent number: 5645303
    Abstract: A pipe coupling device for coupling the peripheral flanges of a pair of pipes together, including a pair of retainers with gripping grooves therein for receiving portions of the peripheral flanges of the pipes. The gripping grooves of the retainers have a unique inner surface with a pair of slanted gripping surfaces and a pair of non-gripping surfaces that are located within the outer envelope of the peripheral flanges. This provides for lightweight, compact retainers. The retainers are pivotally coupled at one of their ends by a hinge assembly and releasably coupled at their opposite ends by a latch mechanism. The hinge assembly has at least two links pivotally coupled at one of their ends to one of the retainers by a first pivot pin being received in a pivot slot formed in the retainer and pivotally coupled at their other end to the other retainer by a second pivot pin being received in a pivot slot formed in the retainer.
    Type: Grant
    Filed: October 27, 1994
    Date of Patent: July 8, 1997
    Assignee: EG&G Pressure Science, Inc.
    Inventors: Kevin S. Warehime, Daniel T. Munley, Thomas S. Oh, Jeffrey E. Swensen
  • Patent number: 5522625
    Abstract: A coupling device is provided for coupling peripheral flanges of first and second pipes. The device comprises first and second arcuate retaining members, coupling structure and a latching mechanism. The coupling device is capable of being initially set via the latching mechanism so as to permit the coupling device to securely couple two pipe flanges of a given diameter. After being initially set, the device is capable of being easily and quickly disassembled and reassembled about the peripheral flanges of the two pipes.
    Type: Grant
    Filed: November 29, 1994
    Date of Patent: June 4, 1996
    Assignee: Hoechst Marion Roussel, Inc.
    Inventors: David L. Flick, Perry J. Parkhurst, Lauren W. Burnett
  • Patent number: 5513228
    Abstract: The clamping and locking device (18) of the clamp includes a screw (22) arranged in a direction which is transverse with respect to the articulated elements of the clamp and engaged through two blocks (19, 19') bearing on two articulated elements of the clamp, which include two guide journals (20a, 20b) each engaged and held in an opening of a bar (26a, 26b). The openings (27a, 27b; 28a, 28b) include a pair (27a, 27b) of circular openings and a pair (28a, 28b) of oblong openings. Nuts (25, 25') allow the clamp to be clamped and locked. The clamp further includes a blocking device (31) consisting of a support (33) including a strut (34) traversed by an opening and including parts (35a, 35b) for engagement on the bars (26a, 26b), a lock nut (37) rotationally mounted in the opening of the support (33), an arrangement (41) for blocking the lock nut (37) in rotation and in axial translation, and at least one blocking finger (44a, 44b) pivotably mounted on the support (33).
    Type: Grant
    Filed: September 26, 1994
    Date of Patent: April 30, 1996
    Assignee: Framatome
    Inventor: Jacques Malmasson
  • Patent number: 5509702
    Abstract: A pipe coupling device for coupling the peripheral flanges of a pair of pipes together, including a pair of retainers with a V-shaped groove therein for receiving portions of the peripheral flanges of the pipes. The retainers are pivotally coupled at one of their ends by a hinge assembly and releasably coupled at their opposite ends by a latch mechanism. The hinge assembly has at least two links pivotally coupled at one of their ends to one of the retainers by a first pivot pin and pivotally coupled at their other ends to the other retainer by a second pivot pin. The pivot pins are separated from each other such that the links of the hinge assembly straddle the peripheral flanges of the pipes. This arrangement provides more uniform pressure at the ends of the retainers since the moment resulting from the offset of the hinge assembly is moved closer to the circumferential loading line between the retainers and the flanges of the pipe.
    Type: Grant
    Filed: August 23, 1994
    Date of Patent: April 23, 1996
    Assignee: EG&G Pressure Science, Inc.
    Inventors: Kevin S. Warehime, Daniel T. Munley
  • Patent number: 5499849
    Abstract: A device for forcing two conical flanges (1, 2) of a pipe coupling together under pressure with a seal (3, 4) between them, comprises a clamping chain with several straps (23) joined together by hinges (10). Thrust pieces (9) each have two flanks for contacting the two conical flanges (1, 2). Each thrust piece (9) is pivotably supported on a respective one of the chain hinges (10) and has on each of its two flanks two spaced supporting zones (16) for contacting the two flanges (I). The position of the thrust piece (9) is thus precisely determined by the support on the chain hinge (10) and the contact with the flanges (I) by the two supporting zones (16). The thrust piece (9) need not transmit any tensile forces in the clamping chain, and it can be small and lightweight.
    Type: Grant
    Filed: May 19, 1993
    Date of Patent: March 19, 1996
    Inventor: Heinrich Fend
  • Patent number: 5301986
    Abstract: A clamp for joining a pair of elements having generally circular flanges, the clamp including an inner flange engaging portion arranged to provide generally axially extending forces to said flanges for retaining them against one another when substantially radial forces are applied to the inner flange, an outer circumferential strap element and at least one bolt. The clamp also includes a coupler engaging the strap element adapted to provide substantially circumferential tension thereto, whereby substantially radial forces are applied to the inner flange without urging non-circumferential bending of the strap element.
    Type: Grant
    Filed: October 9, 1992
    Date of Patent: April 12, 1994
    Assignee: State of Israel-Ministry of Defense, Armament Development Authority, Raphael
    Inventor: Oded Yehezkeli
  • Patent number: 5282654
    Abstract: A narrow, thin, metal strip is arranged around the periphery of the end portion of at least one of two pipes arranged in axial alignment for forming a coupled joint. The adjacent pipe end portions are provided with circumferential grooves. A coupling surrounds the end portions of the pipes and has radially inwardly extending keys for fitting into the grooves in the pipes. The strip has a groove formation for fitting into and lining the groove formed in the end of the pipe upon which it is arranged. The localized pressure of the key fitted into the strip groove is dispersed through the strip into the adjacent pipe areas which the strip overlies to protect the pipe groove walls and base and the pipe-end portions from being damaged by engagement with the coupling key. The strip permits coupling a pair of relatively easily damaged plastic pipes or coupling a plastic pipe and a stronger metal pipe by resisting damage to plastic pipes caused by coupling key pressure.
    Type: Grant
    Filed: April 26, 1993
    Date of Patent: February 1, 1994
    Assignee: Quikcoup, Inc.
    Inventor: Thomas R. Hendrickson
  • Patent number: 5277458
    Abstract: A chain intended for pipe flange connections comprising successive, cross-sectionally U-shaped chain links 8, which are hinged directly to each other and form a ring sector-like contact area 14, 15, 17 and 18. At the contact point of the chain links 8, following on to the eye ring 9, an interstice 13 is provided. Moreover, an interstice 11 is likewise provided between the two flanks 31, 32 of the U-shaped chain links 8 and the two pipes 1, 2 to be connected. The contact points of the chain links 8 are designed as level annular segmental contact surfaces 17, 18 and rest on the likewise level, chamfered outer surfaces 14, 15 of the pipe flanges 3, 4.
    Type: Grant
    Filed: January 22, 1993
    Date of Patent: January 11, 1994
    Inventor: Edgar Tschann
  • Patent number: 5118139
    Abstract: A leak repair clamp for pipe and pipe flanges providing a segmented frame adapted to receive interchangeable annular segmented inserts. All of the inserts provide for interlocking connection with the frame segments but each insert is adapted to fit around one particular diameter cylindrical surface out of a range of different diameter cylindrical surfaces. By selecting particular sized inserts, a single frame can accommodate a wide range of different diameter pipes and pipe fittings. When the insert segments are interlocked into the frame segments, the frame segments are then integrated by bolting threaded studs through flanges to form a unit, which in combination with two interlocked inserts is fastened around and against the cylindrical surface. Thrust restraining set screws are provided to prevent movement of the metal frame relative to the cylindrical surface the frame is fastened around and against.
    Type: Grant
    Filed: June 28, 1989
    Date of Patent: June 2, 1992
    Assignee: Team, Inc.
    Inventor: Charles L. Lott
  • Patent number: 5018548
    Abstract: A segmented pipe coupling provides a housing for a butterfly valve, and preferably is provided with oppositely angled end faces of saw tooth configuration at the respective ends of the coupling segments, thus allowing the inclined end faces to emerge at the axial end faces of the coupling at or closely adjacent to the X,Z plane of an axially long coupling. A slow motion rotary drive for the butterfly valve also is provided.
    Type: Grant
    Filed: January 12, 1990
    Date of Patent: May 28, 1991
    Assignee: Victaulic Company of America
    Inventor: William R. McLennan
  • Patent number: 4924913
    Abstract: A tube coupling system for joining a plurality of metal tubes that are used in air flow systems which includes at least two tubular members each having at least one curled end. A clamping member is used to join the tubular members in an abutting interfacing engagement, the clamping member having a one-piece split coupler with two free ends which removably and circumferentially surround the joined tubular members along their curled ends. The coupler also has a spring locking member which is connected to the coupler free ends and moveable to connect and release the free ends and latch and unlatch the coupler from the members. A split pin can be used to secure the spring locking member. The clamping member coupler has a body portion and leg members affixed to and depending from the body portion so that the body portion and depending leg members are configured to envelope and grip substantially all of the curled ends of two connected tubular members.
    Type: Grant
    Filed: February 1, 1988
    Date of Patent: May 15, 1990
    Assignee: Nord Tech, Inc.
    Inventor: Niels H. Pedersen
  • Patent number: 4919453
    Abstract: A device for coupling the peripheral flanges of a pair of pipes comprising a pair of retaining members, each having a V-shaped groove for receiving a portion of the peripheral flanges of the pipes. The retaining members are pivotally coupled at one of their ends by a single hinge and releasably coupled at their opposite ends by an over-center latch mechanism. The over-center latch mechanism employs a compression bolt and nut to maintain a low profile. The over-center latch mechanism also has primary and secondary link members, the latter preventing the coupling from completely separating should the primary link members fail.
    Type: Grant
    Filed: June 21, 1989
    Date of Patent: April 24, 1990
    Assignee: EG&G Pressure Science, Inc.
    Inventors: Horace P. Halling, Thomas S. Oh
  • Patent number: 4915418
    Abstract: A circular pipe coupling for coupling aligned pipe ends is formed of arcuate segments arranged end to end. Each segment has outwardly extending lugs formed on its opposite ends, with the lugs on the adjacent segment ends being interconnected. One of each pair of interconnected lugs is formed with an integral hook, with a corresponding opening for receiving the hook formed on the opposite lug and providing an axle upon which the hook is engaged to form a hinge connection, except that one of the pairs of lugs is connected together by a manually releasable mechanical fastener, such as a bolt. One of the segments may be manually positioned upon the adjacent pipe ends to be coupled, with one or more segments freely dangling downwardly therefrom under the force of gravity, which sections may be manually pivotal upwardly for encircling the pipes and for applying the releasable mechanical fastener.
    Type: Grant
    Filed: May 19, 1989
    Date of Patent: April 10, 1990
    Assignee: Urdan Industries (USA), Inc.
    Inventor: Josef Palatchy
  • Patent number: 4885122
    Abstract: Clamps and clamping systems for sealing the interface between two generally tubular conduits are disclosed. The clamps of the present invention are especially well adapted for use in nuclear reactor systems, especially as clamps for the instrument port interfaces of nuclear reactors. The clamps are comprised of articulated members pivotally joined by link plates such that the clamp may be opened in jaw like fashion so as to allow easy assembly around the conduits to be sealed. The open ends of the clamps contain datum surfaces which are brought into intimate contact when the clamp is fully assembled. The datum surfaces preload the clamp so as to exert the proper axial pressure on the conduit interface. In one embodiment, the interior surface of the clamp contains a generally flat sloped surface which is used to exert the appropriate axial pressure on the interface between the conduits.
    Type: Grant
    Filed: September 2, 1988
    Date of Patent: December 5, 1989
    Assignee: Westinghouse Electric Corp.
    Inventor: Cecil R. Stapleton
  • Patent number: 4812285
    Abstract: Clamps and clamping systems for sealing the interface between two generally tubular conduits are disclosed. The clamps of the present invention are especially well adapted for use in nuclear reactor systems, especially as clamps for the instrument port interfaces of nuclear reactors. The clamps are generally comprised of articulated members pivotally joined by link plates such that the clamp may be opened in jaw like fashion so as to allow easy assembly around the conduits to be sealed. The conduit seal assembly includes an upper positioner which has a frusto-conically shaped surface and a male flange with a frusto-conically shaped upper surface. These two surfaces create an annular wedge-like opening for accepting a wedge-shaped upper clamp. The upper articulated clamp when assembled thus provides the proper clamping force between the conduit seal and male flange.
    Type: Grant
    Filed: June 5, 1987
    Date of Patent: March 14, 1989
    Assignee: Westinghouse Electric Corp.
    Inventor: Cecil R. Stapleton
  • Patent number: 4784202
    Abstract: A band-type well obstructor for obstructing the well of the hub of a wheel rim, particularly for a pneumatic tire. The well obstructor has an inextensible band with integral circular protrustions mechanically extruded onto the band. The circular protrusions extend radially inwardly to abut against the base of the well to retain the band in position surrounding the well, and to resist crushing under the weight of the vehicle in the event of deflation of the tire. The well obstructor has a fastener assembly utilizing a screw with a groove adapted to receive a locking ring. The fastener assembly further has two transverse beams, one of which is adapted to fit over the end of the screw and abut against a locking washer placed between the transverse beam and the head of the screw. The locking ring is then snapped into place to hold this transverse beam in position. The second transverse beam is placed over the threaded end of the screw.
    Type: Grant
    Filed: July 6, 1987
    Date of Patent: November 15, 1988
    Assignee: Tyron, Inc.
    Inventor: Basil D. White
  • Patent number: 4781406
    Abstract: A clamping apparatus for joining two flanges by means of clamping members circumferentially spaced around the flanges and radially forced inwardly to engage and compress the two flanges in a clamping space of the clamping members includes a clamping roller chain extending around the clamping members with the clamping rollers engaging the outer surfaces of the clamping members which are supported independently of the clamping chain by a support ring in such a manner as to be freely movable in radial direction but under the control of an operating rim which engages all the clamping members for simultaneous radial movement and a tensioning structure for the clamping roller chain which is associated with said guide rim for forcing said clamping members inwardly into firm engagement with said flanges or releasing the clamping members and moving them outwardly out of engagement with the flanges.
    Type: Grant
    Filed: September 25, 1987
    Date of Patent: November 1, 1988
    Assignee: Kernforschungszentrum Karlsruhe G.m.b.H.
    Inventor: Jorg Hubener
  • Patent number: 4739542
    Abstract: A circumferentially contractible clamp operated by a bolt and nut actuator wherein a U-shaped safety saddle pivotally mounted upon one end of the clamp band includes a threaded bore receiving a threaded stem of the nut threaded upon the bolt. The inner end of the stem is operatively associated with the band other end wherein rotation of the nut tensions the bolt and the interconnection of the nut stem and the saddle supports the nut such that the stem will maintain the band in a contracted condition even if the bolt fails.
    Type: Grant
    Filed: February 9, 1987
    Date of Patent: April 26, 1988
    Assignee: Aeroquip Corporation
    Inventor: Richard M. Krzesicki
  • Patent number: 4722561
    Abstract: A stamped and welded clamp for pipe or tube joints having a plurality of arcuate segments pivotally attached to each other and separable at one location so as to facilitate wrapping about the joint. Each segment forms a Vee shaped recess on its inside face and each is formed from similar pieces projection welded together and having top and lateral reinforcing flanges. A special T-bolt serves to secure and tighten the assembly and employ a T-shaped bolt and which fits slidably into a mating housing having a stepped end-face to serve to restrain the bolt from turning during tightening.
    Type: Grant
    Filed: July 29, 1987
    Date of Patent: February 2, 1988
    Assignee: 3900 Corp
    Inventors: John E. Heckethorn, Danny J. Whittle
  • Patent number: 4681353
    Abstract: A V-coupling device for coupling coaxial annular flanges comprising at least two arcuate coupling members, a pivoting mechanism for pivotally and releasably coupling the coupling members at their first ends, and a tightening mechanism which includes an axially-oriented rotatable member for coupling the members together at their second ends and moving them radially inwardly. The tightening mechanism has a pair of camming surfaces that act upon cam follower surfaces integrally formed on the second ends of the arcuate coupling members. The camming surfaces move axially in response to rotation of the axially-oriented rotatable member. The coupling device is especially suited for installation in narrow annular space where tangentially-oriented tightening mechanisms are difficult to use.
    Type: Grant
    Filed: July 17, 1984
    Date of Patent: July 21, 1987
    Assignee: Pressure Science Incorporated
    Inventor: Horace P. Halling
  • Patent number: 4679622
    Abstract: A multitube heat exchanger is provided with a take-apart fitting. The fitting is coupled to one end of the exchanger product tube. A cap ring is secured to the inner tube of the exchanger. An end cap adapted to seal against the cap ring is secured to the fitting. A split ring clamp serves to urge the end cap against the cap ring by virtue of a chamfered surface on the clamp urging against a complementary chamfer of the end cap.
    Type: Grant
    Filed: April 25, 1985
    Date of Patent: July 14, 1987
    Assignee: Robert B. Cannon, Inc.
    Inventor: Robert B. Cannon
  • Patent number: 4640530
    Abstract: The device makes it possible to connect tightly first and second parts having a flange and locking or tightening means for the said flanges. The tightening or locking force applied to the locking of tightening means is multiplied in order to increase the compression force applied to a gasket or joint. Each flange has a conical surface of axis D and angle .lambda.. The device has two clips, each of which has a conical surface of axis D and angle .mu., as well as an intermediate member in the form of a ring constituted by several interconnected segments and having an inner surface and an outer surface. Each inner peripheral surface has a conical surface of axis D and angle .lambda. able to cooperate with the conical surface of axis D and angle .lambda. of the first and second parts. Each outer peripheral surface has a conical surface of axis D and angle .mu. able to cooperate with the conical surfaces of angle .mu. of the clips.
    Type: Grant
    Filed: April 20, 1984
    Date of Patent: February 3, 1987
    Assignee: Commissariat a l'Energie Atomique
    Inventors: Claude Abbes, Christian Rouaud, Jean Valla, Robert Forges, Raymond de Villepoix
  • Patent number: 4639020
    Abstract: A segmented coupling for use in sealing adjacent pipe ends includes coupling segments having bolting pads at their ends, the ends of the coupling segments including inclined end faces for cooperation with correspondingly inclined end faces of an adjacent coupling segment to produce self-adjustment of the coupling and rigid clamping of the pipe ends upon tightening down of the coupling.
    Type: Grant
    Filed: June 5, 1986
    Date of Patent: January 27, 1987
    Assignee: Victaulic Company of America
    Inventors: Robert Rung, Lani G. Ache
  • Patent number: 4611839
    Abstract: A segmented coupling for use in sealing adjacent pipe ends includes coupling segments having bolting pads at their ends, the ends of the coupling segments including inclined end faces for cooperation with correspondingly inclined end faces of an adjacent coupling segment to produce self-adjustment of the coupling and rigid clamping of the pipe ends upon tightening down of the coupling.
    Type: Grant
    Filed: July 12, 1983
    Date of Patent: September 16, 1986
    Assignee: Victaulic Company of America
    Inventors: Robert Rung, Lani G. Ache
  • Patent number: 4601334
    Abstract: A control line protector for securing and protecting a control line or lines to the exterior of an oil well tubing string. The protector comprises a flexible steel strap to the ends of which a respective trunnion is attached, one of which trunnions is removably mounted. The trunnions are interconnected by two screws which may be rotated to draw the trunnions towards one another, thus tensioning the strap around a length of tubing forming part of a drill string. An axially-directed channel is formed adjacent one of the trunnions to receive a control line.
    Type: Grant
    Filed: April 9, 1984
    Date of Patent: July 22, 1986
    Assignee: Weatherford/Lamb, Inc.
    Inventor: Peter J. Lovegrove
  • Patent number: 4568115
    Abstract: An improved multi-piece pipe clamp particularly useful for clamping the ends of two flanged sanitary pipes together in longitudinal alignment. When in the closed position the clamp engages the flanges to draw the pipe faces into intimate sealing contact. The clamp pieces pivot with respect to each other to an open position which more nearly approximates the closed position than previous clamps, thus facilitating assembly of the clamp and pipes.
    Type: Grant
    Filed: April 20, 1983
    Date of Patent: February 4, 1986
    Assignee: Ladish Co.
    Inventor: Robert D. Zimmerly
  • Patent number: 4527818
    Abstract: A coupling especially for connecting pipe or tubing that must not be subjected to torque as connections are made, or afterward. It includes a connector for each of the pipe ends that has a socket to receive the pipe and an extension with a flanged tip. There is a split ring clamp to hold two of the flanged tips together in butting relationship and a hose clamp holds the split ring clamp in place.
    Type: Grant
    Filed: July 5, 1983
    Date of Patent: July 9, 1985
    Assignee: Texaco Inc.
    Inventor: Herbert A. Rundell
  • Patent number: 4488744
    Abstract: A clamp for joining a pair of flanges has a clamp chain with grooved clamp shoes thereon which, in the closed position of the clamp, straddle the edges of the flanges to press them together. At least some of the clamp shoes are fastened to the clamp chain through an intermediate member which pivots at both the clamp chain and the clamp shoe.
    Type: Grant
    Filed: December 7, 1981
    Date of Patent: December 18, 1984
    Assignee: Leybold-Heraeus GmbH
    Inventors: Friedrich Bubeck, Uwe Reimpell
  • Patent number: 4471979
    Abstract: A quick-connect coupling is disclosed for thin-walled pipes which can accommodate pipes of the same internal diameter but of differing wall thickness, the coupling member being constructed to deform pipes of less than maximum wall thickness into a substantially elliptical condition in which the coupling is fully seated, bolting pads of the coupling being spaced from each other to induce deformation and seating of the pipes upon tightening of the coupling.
    Type: Grant
    Filed: March 15, 1982
    Date of Patent: September 18, 1984
    Assignee: Victaulic Company of Canada Limited
    Inventors: John Gibb, Jozsef Horvath
  • Patent number: 4402113
    Abstract: A flexible clamp for hose, cable and the like in the form of a strip with opposite ends joined to produce a band. A portion of the strip is formed into parallel sections with at least one section having a corrugated shape and with another section having a variable length, non-corrugated, and conforming to the shape of the band, with this section having a plurality of overlapping tongues providing a substantially continuous portion of the band. In use, the corrugated section provides flexibility for the clamp permitting change of clamp circumference with temperature cycling and the like.
    Type: Grant
    Filed: December 30, 1981
    Date of Patent: September 6, 1983
    Assignee: Communications Technology Corporation
    Inventor: Donald J. Smith
  • Patent number: 4341406
    Abstract: Pipe coupling of the type comprising two end fittings which can be fixed to two parts of the circuit to be connected and an open collar constituted by a plurality of articulated elements, with which are associated tensioning means, said elements cooperating with the end fittings to bring the latter into tightly sealed contact during the utilization of the tensioning means, wherein the collar has at least one C-shaped spring connecting each of the articulated elements and giving the collar a semi-rigid structure, there being a clearance in a direction longitudinal with respect to the spring between the latter and each of the articulated elements in order to prevent the transmission of the tightening forces to the spring.
    Type: Grant
    Filed: September 30, 1980
    Date of Patent: July 27, 1982
    Assignee: Commissariat a l'Energie Atomique
    Inventors: Claude Abbes, Raymond de Villepoix, Christian Rouaud
  • Patent number: 4191410
    Abstract: The device is adapted to facilitate the assembly and disassembly of pipe sections in a blast downpipe. It comprises two flanges defining frustoconical bearing surfaces and a collar comprising clamping jaws which engage on said bearing surfaces. The collar is suspended from a support constructed in two parts, one of which parts is fixed and the other pivotally mounted on the first part. The collar may be clamped or unclamped by means of two screw and nut units.
    Type: Grant
    Filed: September 29, 1978
    Date of Patent: March 4, 1980
    Assignee: Union Siderurgique du Nord et de l'est de la France
    Inventors: Henry Voituriez, Rene Aymard
  • Patent number: 4170260
    Abstract: A finned cooling clamp for dissipating heat from motorcycle exhaust pipes is comprised of two arcuate collar segments which can be removably interlocked together around an exhaust pipe. The collar segments are interlocked together at their opposite ends by mating locking elements. Locking heads on one end of the collar segments are apertured to receive a fastener utilized for attaching the cooling clamp to a cylinder head of a motorcycle. The interlocked clamp segments form a continuous, annular clamp conforming to the shape of a mounting flange affixed to a motorcycle exhaust pipe. The mounting flange is also apertured, and the fastener extends through it as well as through the clamp collar segments to attach an exhaust pipe to a motorcycle cylinder head.
    Type: Grant
    Filed: August 29, 1977
    Date of Patent: October 9, 1979
    Assignee: Drag Specialties, Inc.
    Inventors: Thomas H. Rudd, James M. Preisler
  • Patent number: 4123095
    Abstract: A clamping structure for use in holding adjacent, aligned, flanged pipe ends together can be constructed utilizing a band consisting of a plurality of elongated coupling segments located in end-to-end relationship. Each of the clamping structures includes a clamping surface; these clamping surfaces are dimensioned so that when the band is in position around the flanged ends the clamping surfaces engage and fit closely against the flanges on the pipes so as to hold the flanges together. A locking arm is pivotally mounted on one of the terminal ends of the band. A latching element is carried by the locking arm in such a manner that the arm may be pivoted between a position in which the latching element is spaced from the latch retainer for removal and/or for installation of the band and a position in which the latching element engages the retainer so as to secure the band in position.
    Type: Grant
    Filed: June 30, 1977
    Date of Patent: October 31, 1978
    Assignee: Hansted Corporation
    Inventor: Theodore A. Stehlin
  • Patent number: 4065846
    Abstract: A seal-welded pipe joint mechanically braced by a clamp for preferred use in handling toxic and radioactive materials is disclosed together with a process for joining the same. The joint comprises a pair of abutted male frustroconical skirts, each attached integrally to the pipe segments to be joined and confronting each other at opposed mating and finished surfaces which define a sunken ridge at their periphery. A uniform continuous seal weld of relatively slight penetration seals the opposed mating and finished surfaces at the ridge. The pipe joint is physically secured by a plurality of, for example, three female frustroconical segments forming a circumscribing collet which is circumferentially clamped to the skirt by a plurality of, for example, three tangentially disposed bolts. The abutted frustroconical skirts taper from a broad cross section adjacent the pipe wall radially outwardly to a narrower cross section.
    Type: Grant
    Filed: June 14, 1976
    Date of Patent: January 3, 1978
    Assignee: Bechtel International Corporation
    Inventor: Byron Herbert Leonard, Jr.
  • Patent number: 3964773
    Abstract: A joint which is made up of exhaust pipes formed with beaded ends or with a beaded end on one pipe and a flared end on the other pipe, in any case either with or without suitable gasket means. A clamp having a concave groove engages the protrusions on the ends of the pipes of the joint and wedgingly forces them together as the clamp is constricted.The clamp is made out of two halves which are hingedly connected at the first end of each and which are adapted to be secured by a bolt at the second end of each, there preferably being a nut permanently welded to one of the second ends coaxial with a first perforation in that end and a second perforation in the other of the second ends to pass the bolt to the nut. The hinged connection is preferably non-separable.
    Type: Grant
    Filed: September 13, 1974
    Date of Patent: June 22, 1976
    Assignee: Mercury Metal Products, Inc.
    Inventors: Bertil Stade, Edward Hoglund