Coupling To Conduit Patents (Class 29/237)
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Patent number: 5398394Abstract: A swaging tool for swaging an axially swaged fitting for connecting tubes and pipes is disclosed. The tool comprises a housing and a piston movable in opposite axial directions within the housing. A first engaging member in the form of a U-shaped yoke is formed on the outer surface of the housing. A second engaging member, also in the form of a U-shaped yoke, is formed on the outer surface of the piston and is adapted to slide within slots in the outer surface of the housing. Both of these yokes are configured to allow each yoke to engage a portion of the fitting to swage it when the yoke of the second engaging member is moved toward the yoke of the first engaging member.Type: GrantFiled: September 15, 1993Date of Patent: March 21, 1995Assignee: The Deutsch CompanyInventors: Arthur J. Hyatt, Biing-Kwang K. Hsieh, Earl T. Wootton
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Patent number: 5377400Abstract: A jointing clamp for pressing pipe connections, particularly for pipes of composite materials, includes two pressure clamps, each of which carries a form part of a form insert and which are connected with one another by connecting plates that are disposed on either side, and which are supported at the connecting plates so that they are can be pivoted in opposite directions about parallel pivoting axes and can be moved into the closed position by means of a clamp driving device which can be connected to the jointing clamp by means of a crossbolt reaching through aligned boreholes in the connecting plates. In order to achieve a pressed pipe connection of high form accuracy, the form insert is constructed in three parts and the third form part is supported in a stationary manner between the connecting plates of the jointing clamp.Type: GrantFiled: November 9, 1993Date of Patent: January 3, 1995Assignee: Hewing GmbHInventor: Karl-Georg Homm
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Patent number: 5375309Abstract: A hand held tool for inserting a forward end of a cylindrical insert member into an open end of a relatively thick-walled plastic tube. The tool comprises a pistol grip having a hand engaged member that is squeezed by one's hand. A push shaft is positioned at the top end of the pistol grip, with the push shaft having a forward end that extends away from the pistol grip. The hand engaged member cooperates with a mechanism for moving the push shaft forward in longitudinal movement along the longitudinal axis of the push shaft when the hand engaged member is squeezed. A housing extends from the pistol grip around and along the push shaft, with a distal end of the housing extending beyond the forward end of the push shaft. An access opening is provided in the housing through which the forward end of the push shaft is accessible for positioning the cylindrical insert member in axial alignment with the longitudinal axis of the push shaft at the forward end of the push shaft.Type: GrantFiled: July 19, 1993Date of Patent: December 27, 1994Assignee: Trebor IncorporatedInventor: Michael R. Dunn
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Patent number: 5367756Abstract: A field completion tool including a open frame formed on the top end with a yoke including a centrally located threaded drive bore receiving a threaded drive shaft having a spigot thrust fitting on the bottom end thereof. The frame includes on the bottom end an oversized hex nut which forms a clearance bore that may optionally be threaded but which is of sufficient size to telescope over a plastic pipe projecting upwardly from the top end of a meter riser which is telescoped over the length of a plastic pipe projecting from an underground gas utility distribution system. The frame includes a handle for grasping with one hand and may be used to rotate the frame to thread the hex nut to couple the frame to the top end of the meter riser. The frame has a clamping means which blocks relative movement of the upwardly projecting plastic pipe relative to the frame.Type: GrantFiled: December 7, 1993Date of Patent: November 29, 1994Assignee: R. W. Lyall & Company, Inc.Inventor: Mark E. Huetinck
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Patent number: 5353623Abstract: A portable tool for crimping a ferrel portion of a tube fitting around a hose is provided. The tool has an upper and lower frame. The upper frame has a means for stabilizing an upper die carrier which encloses an upper die insert. The lower frame encloses a lower die insert. A compression shaft is inserted through an aperture formed in the upper frame for moving the upper die carrier along a vertical axis of the tool. A means for pivoting the upper frame in relation to the lower frame is provided to allow a user to open and close the tool. A locking means is further provided permitting the upper frame to be locked to the lower frame during a crimping procedure. The compression shaft can be actuated manually, electrically, or hydraulically. The tool may further be set into a framed housing for use in a manufacturing environment.Type: GrantFiled: April 15, 1994Date of Patent: October 11, 1994Inventor: Larry F. Bobenhausen
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Patent number: 5332269Abstract: The connecting device comprises a connecting body (12) and at least one connecting piece (20) adapted for having plugged thereon the end portion (24) of the plastic tube (14) to be connected. The outer diameter of the connecting piece (20) is slightly larger than the inner diameter of the plastic tube (14). Prior to plugging the plastic tube (14) onto the connecting piece (20), a pressing sleeve (28) is shifted onto the plastic tube (14). The inner diameter of the pressing sleeve (28) is selected such that the pressing sleeve (28) can be pressed onto the end portion (24) of the plastic tube (14) plugged on the connecting piece (20). During this process, the plastic tube (14) is displaced in axial direction until its forward end is received in a receiving groove (46) annularly surrounding the connecting piece (20) and being open towards the plastic tube (14).Type: GrantFiled: February 28, 1992Date of Patent: July 26, 1994Assignee: Hewing GmbHInventor: Karl G. Homm
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Patent number: 5323697Abstract: In a radial press having a press axis (A) , a plurality of outer cam surfaces (1, 2, 3, 4) at an angle to one another are grouped in two press yokes (18, 19) which are driven radially against one another. The planes of symmetry of the cam surfaces (1-2 and 3-4) disposed in the same press yoke are parallel with the drive direction. A number of outer cam follower bodies (31) lying between each pair of the outer cam surfaces serve for the radial advancement of press jaws (30) toward the press axis. Inner cam follower bodies (37) with additional press jaws (41) are driven synchronously by the outer cam follower bodies (31).Type: GrantFiled: October 9, 1992Date of Patent: June 28, 1994Inventor: Peter Schrock
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Patent number: 5313986Abstract: The method and apparatus are useful in positioning components, for example two half shells of a clamp for a pipeline or other cylindrical member (10). One half-shell (12) is clamped by studs (56) to brackets (52) on a carriage (16) which can then traverse about the member (10) by engagement of sprockets (30, 28) with chains (18) encircling the member (10). A second half-shell is then lowered by crane onto the member (10). The two half shells are clamped together by studs and the brackets (52) released and swung clear. The apparatus can then be removed if desired. Drive to the carriage (16) is through a flexible shaft (70), gearbox (34) and sprockets (30) connected together by drive shaft (33). Wheels (26) roll on the member (10).Type: GrantFiled: April 6, 1992Date of Patent: May 24, 1994Assignee: British Gas plcInventor: Dennis W. Jude
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Patent number: 5307664Abstract: A jointing clamp for pressing pipe connections, particularly for pipes of composite materials, includes two pressure clamps, each of which carries a form part of a form insert and which are connected with one another by connecting plates that are disposed on either side, and which are supported at the connecting plates so that they can be pivoted in opposite directions about parallel pivoting axes and can be moved into the closed position by means of a clamp driving device which can be connected to the jointing clamp by means of a crossbolt reaching through aligned boreholes in the connecting plates. In order to achieve a pressed pipe connection of high form accuracy, the form insert is constructed in three parts and the third form part is supported in a stationary manner between the connecting plates of the jointing clamp.Type: GrantFiled: February 4, 1992Date of Patent: May 3, 1994Assignee: Hewing GmbHInventor: Karl-Georg Homm
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Patent number: 5305510Abstract: A hydraulic assembly tool (70) includes a fixed jaw (76) and a movable jaw (78). The movable jaw (78) includes load bearing surfaces (86,118) which provide for even wear and counter torsional forces in order to increase the useful life of the tool (70).Type: GrantFiled: August 18, 1992Date of Patent: April 26, 1994Assignee: Lokring CorporationInventors: Steven T. Croft, Maxwell B. Ho
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Patent number: 5301408Abstract: One-piece garter spring coupling release tool. The release tool is molded in a single selectively configured shape out of a durable, flexible plastic material such as Elastollan.TM. S98A available from Elastogran of Germany. The release tool generally comprises a cylindrical body with a slot along its length and a flange on one end. The slot permits the tool to be positioned around a port to which a garter spring coupling is connected; the flange provides an area for gripping the tool to releasably engage the tool with its coupling. The flexible, slotted configuration of the garter spring coupling release tool permits nesting of a four-piece set of such tools within each other to facilitate packaging, storage and retention of the tools as a set.Type: GrantFiled: March 31, 1992Date of Patent: April 12, 1994Assignee: R & B, Inc.Inventors: Steven Berman, Billy Carlisle, John Clark, William C. Rogers
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Patent number: 5297325Abstract: A hydraulic tool having a piston movable along a first axis and a jaw member movable along a second axis spaced from and parallel to the first axis is provided with supporting means to resist angular deflection and is provided with a floating shaft abutting the piston to absorb any lateral deflection without causing deflection to the piston. The abutment face of the piston is outwardly convex.Type: GrantFiled: March 11, 1993Date of Patent: March 29, 1994Assignee: Aeroquip CorporationInventor: William G. Thelen
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Patent number: 5297719Abstract: A method of producing inner parts of a tripod joint followed by a tubular shaft has one end of the tubular shaft deformed in a non-chip-forming way. The deforming increases the wall thickness. Radial arms are connected to the thickened region of the tubular shaft end, preferably by friction welding.Type: GrantFiled: November 18, 1992Date of Patent: March 29, 1994Assignee: GKN Automotive AGInventor: Rolf Cremerius
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Patent number: 5297417Abstract: A portable, self-contained collet crimping apparatus includes a base having a hand-actuated hydraulic pump assembly mounted thereon is disclosed. A collet crimping machine is pivotably mounted on the base so as to be adjustably oriented at any desired angle. Means are provided for selectively retaining the collet crimping machine in a desired rotational position relative to the base. The hydraulic pump assembly is connected to actuate the collet crimping machine. The collet crimping machine further includes a pusher which secured to the machine to prevent loss, yet which is slidable between extended and retracted positions. In the extended position, the pusher is disposed outwardly away from the collet crimping machine to permit easy replacement of a die assembly. In the retracted position, the pusher is disposed within the collet crimping machine and precisely aligned with the other components thereof for use.Type: GrantFiled: September 18, 1992Date of Patent: March 29, 1994Assignee: Dana CorporationInventors: Eric D. Orcutt, George Easterday, Jr., Duane L. Lambert, Marlin D. Meredith
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Patent number: 5289712Abstract: This invention is directed to a novel quick action crimping tool. More particularly, this invention pertains to a novel high leverage tool which can be used to crimp metal rings onto piping joints. A quick-action crimping tool comprising: (a) a first jaw means with a portion of a crimp opening in a side thereof adjacent a second jaw means; (b) a second jaw means with a portion of a crimp opening in a side thereof adjacent the first jaw means; (c) a jaw constraint arm means, the first jaw means being rigidly connected to the jaw constraint arm means, the second jaw being pivotally connected to the jaw constraint arm means; and (d) a leverage arm means pivotally connected to the jaw constraint arm means and during pivotal movement relative to the jaw constraint arm means reciprocally moves the second jaw means between an open position and a closed position relative to the first jaw means.Type: GrantFiled: January 25, 1993Date of Patent: March 1, 1994Assignee: Haughian Sales Ltd.Inventor: Daniel J. Haughian
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Patent number: 5277082Abstract: A strip of heat activated structural adhesive film is sandwiched between two thin strips of tempered steel shim stock, and the combined strips are placed into a semi-cylindrical cavity defined by a female mold member or block. A mating male mold member or metal bar presses the strips into the cavity while the parts are heated within a heated platen hydraulic press to form a laminated curved shoe body. After the shoe body is cooled, a semi-cylindrical collar is attached by another strip of the adhesive to one end portion of the laminated shoe body and with similar mold members heated within the press. The attached collar seats within a mating recess formed within a semi-circular mounting member and is removably secured by screws to provide for conveniently replacing the shoe body.Type: GrantFiled: July 22, 1992Date of Patent: January 11, 1994Inventor: Anthony F. Staub
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Patent number: 5271257Abstract: A pipe crimping apparatus comprises holding means to externally engage and hold a joint formed by locating one end of a pipe connection onto a pipe end, the holding means having a crimping tool movable relative to the swaged end to cause the swaged end to be deformed and crimped onto the pipe end. In a preferred embodiment, the holding means is elongate and at one end thereof has a gripping zone to engage behind the inner side of a swaged end of the pipe connector, and at the other end thereof the crimping tool is movable longitudinally and internally of the holding means. Means are provided to cause axial movement of the tool towards the gripping zone so to engage the outer side of the swaged end and crimp it to the pipe end.Type: GrantFiled: July 28, 1992Date of Patent: December 21, 1993Inventor: William J. Irwin
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Patent number: 5267464Abstract: A pipe ring crimping tool providing significant mechanical advantage for applying force with a sufficient jaw opening and minimal external dimensions, minimal handle span and minimal handle length throughout the operational cycle. The tool is compact and lightweight to allow reach and access of the jaws into confined spaces. The tool utilizes a link and pin mechanism to translate the operator hand force exerted on the handles into a crimping force in a manner which allows for smooth application of operator hand force while increasing the crimping force as the pipe ring is compressed. The tool configuration by minimizing the handle spread, allows for single-handed operation of the tool or closely held two-handed operation. The tool includes a link mechanism designed to provide smooth crimping force and to preclude tool locking up and excess friction. The handles move laterally in opening the jaws to their maximum spread and are closed rotationally when crimping the pipe ring.Type: GrantFiled: December 30, 1991Date of Patent: December 7, 1993Inventor: John G. Cleland
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Patent number: 5261263Abstract: An improved crimping tool mechanism with radially opposed jaws that direct and balance compressive forces toward the center of the work, joining cylindrical connectors and cables with more reliable electrical and mechanical contact than that obtainable using linear motion devices.Type: GrantFiled: December 21, 1992Date of Patent: November 16, 1993Inventor: Eric J. Whitesell
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Patent number: 5257525Abstract: A slim-line portable hose ferrule crimper is formed by a bar with a pair of spaced parallel tracks extending from one side thereof. A movable crimping die holder holding a crimping die half is mounted on the tracks adjacent the bar, and is moved back and forth by a threaded screw passing through the bar and into the movable holder. A stationary holder for a complementary second die half confronting the movable holder is releasably secured at a fixed location on the tracks, but may be released by a pivoting latch to permit its removal from the apparatus.Type: GrantFiled: June 24, 1992Date of Patent: November 2, 1993Assignee: Atco Products, Inc.Inventor: John P. Clarke
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Patent number: 5233739Abstract: A hose construction and methods of making the same are provided, the hose construction comprising a tubular hose and a coupling secured to one end of the tubular hose, the inner peripheral surface of the tubular hose comprising an inner corrugated hose made of polymeric material and having inwardly convex projections with recesses therebetween and extending from one end of the tubular hose to the other end thereof, the coupling having an insert disposed in one end of the tubular hose and being radially outwardly expanded into sealing relation with the inner corrugated hose, the insert having an outer peripheral surface defined by a plurality of outwardly convex projections with recesses therebetween, the projections of the insert being respectively received in the recesses of the inner hose and the projections of the inner hose being respectively received in the recesses of the insert whereby the interior of the tubular hose is substantially sealed to the interior of the coupling, the inner peripheral surfaceType: GrantFiled: January 10, 1992Date of Patent: August 10, 1993Assignee: Dayco Products, Inc.Inventors: Homer N. Holden, James L. Lawrence, Jerry W. Rogers, John D. Sanders
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Patent number: 5233742Abstract: Make-up of a pipe section and coupling to form a tubular joint having proper stand-off at proper make-up torque is automatically controlled. The coupling is first rotated onto the pipe section to a hand-tight position and the length of the coupling and the distance from the open end of the coupling to the pin end of the pipe section are measured by a digital measuring device which inputs these measurements to a computer. The number of turns of the coupler required to attain optimum stand-off is calculated by the computer. The pipe section is held stationary and power tongs rotate the coupling further onto the pipe section while the applied torque and the number of turns are measured and provided as inputs to the computer. The computer determines that the made up tubular joint is acceptable or not acceptable during the rotation by determining if the stand-off is within a predetermined make-up stand-off range at the same time that the make-up torque is within a predetermined make-up torque range.Type: GrantFiled: June 29, 1992Date of Patent: August 10, 1993Inventors: N. Monroe Gray, Earl L. Magee
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Patent number: 5226231Abstract: A tool for joining plastic pipe and fittings that provides for a quarter turn rotation of a pipe fitting while simultaneously pulling a free end of a longitudinally aligned pipe section into the fitting. The tool includes an inner ring that slips over a free end of a pipe section and is secured thereto by inwardly directed mounting screws, and an outer ring coaxially circumposed about, and rotatably connected to, the inner ring. A detachable semicircular partial collar fits snugly about the outer ring and reversibly attaches to a pair of outwardly directed nibs positioned on opposite sides of the outer ring in a plane that bisects the pipe section. A crossbar is mounted between a pair of lugs attached to a central portion of the partial collar. A handle is pivotally mounted above a yoke and chain that encircle and grasp the fitting.Type: GrantFiled: August 12, 1992Date of Patent: July 13, 1993Inventor: Marcel De Leebeeck
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Patent number: 5226230Abstract: A tool for releasing a male fitting from a mating female connector coupled together by a retaining element includes an elongated H-shaped handle, a bifurcated body including complementary body halves resiliently carried by one end of the handle in a spaced-apart relationship which embraces an outer surface of the connector in a fixed orientation substantially overlying a radial opening therein which exposes the retaining element, and an abutment member which extends from one or both of the body halves operable to radially penetrate the opening to displace the retaining element from an engaged position to an O.D. release position. A second bifurcated body including a second set of complementary body halves is carried on the other end of the handle. Finger members carried by the second body axially engages the retaining element to effect I.D. release of the connector.Type: GrantFiled: December 13, 1991Date of Patent: July 13, 1993Assignee: ITT CorporationInventor: Gary Klinger
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Patent number: 5209100Abstract: A compression tool for joining tubular workpieces is provided with two or more arcuate compression jaws displaceable relative to each other in such a manner that the jaws can be opened for placement o a tubular segment of the workpiece. The compression tool (121) comprises compression jaw supports (132, 133) pivotally mounted on pivot bolts (134, 135). Two compression jaws (142-145) of each jaw support are guided along guide surfaces (138-141) which subtend an angle symmetrical to the center of the compression space when the compression jaws are in a closed state. The compression jaws are biased by a spring (146-149) along the guide surfaces (138-141) toward terminal end stops (150-153). Movement of the jaw supports about the pivot bolts (126, 127) permits opening and closing of the compression jaws.Type: GrantFiled: June 8, 1992Date of Patent: May 11, 1993Inventor: Helmut Dischler
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Patent number: 5206980Abstract: A frame (20) which open at the bottom has supporting plates (22, 24, 26) and a bottommost support piece (28) connecting at least two support plates (22, 24, 26). The frame is designed to fit over lengths of pipes to be aligned. Two sets of (40, 41) clamps consisting of at least one clamp each are mounted on the frame (20). The sets of clamps (40, 41) are translatable with respect to one another. One set of clamps (40) engages one of the pipes (13) to be aligned. The other set of clamps (41) engages the other pipe (11) to be aligned. Once the pipes (11, 13) are engaged the facing ends are brought together by translating the sets of clamps (40, 41) toward each other. A roller (30) is affixed to one end of the frame (20) to facilitate movement of the apparatus (10) along a length of pipe.Type: GrantFiled: April 7, 1992Date of Patent: May 4, 1993Inventor: Johnny D. Chapman
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Patent number: 5203062Abstract: Apparatus (3) for pressing an inner ring (2) into a pipe (1) comprising a clamp base (8), a means (5) for pressing the inner ring along the axis of the pipe and a means for generating a force (6), all of them being located on the apparatus body wherein advancement of the pressing means permits an inner ring (2) held in the pressing means to be inserted into the end of a pipe which is held fixed in a clamp base (8). The pressing means has a ring holder (16) at its forward end for detachably holding the inner ring (2) to be inserted. The force generating means are supported by the apparatus body and comprise a pinion (21) engaged with a rack (5a).Type: GrantFiled: September 11, 1991Date of Patent: April 20, 1993Assignee: Nippon Pillar Packing Co., Ltd.Inventor: Kiyoshi Nishio
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Patent number: 5199145Abstract: A corporate stop is shown for sealing an opening in the sidewall of a host pipe. The stop has a threaded stem with an enlarged head portion and a neck portion of reduced size. A flexible sleeve member is received about the neck portion of the stem and has an upper end and a lower end which accommodates the enlarged head portion of the stem. A compression washer has an upper side and a lower side which fits about the sidewall of the conduit. The washer also has an opening which is alignable with an opening provided in the sidewall of the conduit. The lower side of the washer has a recess for receiving the upper end of the sleeve member when the stop is installed on the conduit performing an external seal with respect to the conduit. A clamp nut is engageable with the neck portion of the threaded stem for forcibly moving the lower end of the sleeve member over the head portion of the stem to expand the lower end of the sleeve member and form an internal seal with an opening in the conduit.Type: GrantFiled: March 21, 1991Date of Patent: April 6, 1993Assignee: Pipe Rehab International, Inc.Inventors: Jim S. McMillan, Simon Tarsha
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Patent number: 5187851Abstract: A tool for releasing a male fitting from a mating female connector coupled together by a retaining element includes an elongated H-shaped handle, a bifurcated body including complementary body havles resiliently carried by one end of the handle in a spaced-apart relationship which embraces an outer surface of the connector in a fixed orientation substantially overlying a radial opening therein which exposes the retaining element, and an abutment member which extends from one or both of the body halves operable to radially penetrate the opening to displace the retaining element from an engaged position to an O.D. release position. A second bifurcated body including a second set of complementary body halves is carried on the other end of the handle. Finger members carried by the second body axially engages the retaining element to effect I.D. release of the connector.Type: GrantFiled: December 13, 1991Date of Patent: February 23, 1993Assignee: ITT CorporationInventor: Gary Klinger
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Patent number: 5184391Abstract: This invention is a new device for installing press fit couplings to join steel pipelines. This apparatus is a joining press which fits inside the pipes to be joined and grabs them on their inside surfaces. It then pulls the pipes together, forcing the pipe ends into the coupling. The invention is comprised of two hydraulically operated grippers to grip the pipe and a hydraulically operated cylinder to pull the pipes together. The entire press is controlled using only two hydraulic lines. The grippers can be retracted and the apparatus moved within the pipeline from one joint to the next.Type: GrantFiled: October 15, 1991Date of Patent: February 9, 1993Assignee: Electric Power Research Institute, Inc.Inventors: Allan T. Fisk, David I. Freed
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Patent number: 5177846Abstract: A hand held insertion tool formed from a single piece of material, having a comfortable gripping portion and an irrigation fitting holding portion, with the fitting holding portion including an elongated hollow central portion and a pair of stepped, slotted openings along one side thereof for releasably holding a fitting therein, to accurately place and then inserting said fitting into a water supply means.Type: GrantFiled: December 16, 1991Date of Patent: January 12, 1993Inventor: Gilbert A. Bryant
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Patent number: 5161832Abstract: A unique plastic retainer is disclosed having a pair of axially spaced cylindrical rings. Retainer arms for retaining an upset portion of a tube within a housing bore extend from a rear ring, and a plurality of webs connect the front and rear cylindrical rings of the retainer. When a tube is initially inserted into the housing bore, it contacts an inner periphery of the arms. The retainer then moves axially forwardly within the bore for a small distance until the forward ring abuts a seal package within the housing. Further movement of the retainer is then prevented, and the upset portion of the tube causes the arm to flex radially outwardly at a flex point in the rear ring. The upset portion may then move axially beyond the arms into a fully connected position within the housing.Type: GrantFiled: October 16, 1991Date of Patent: November 10, 1992Assignee: Huron Products Industries, Inc.Inventors: James McNaughton, Donald C. Walker
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Patent number: 5153975Abstract: An apparatus for performing at least one cycle of screwing and unscrewing of a screwthreaded joint for the assembly of tubes, which enables tightening of the joint with a high level of torque while avoiding damage to the screwthreads. The apparatus comprises two wrenches, each wrench engaging against a component of the joint, with each wrench comprising at least one mobile jaw which is slidable in a chamber. The mobile jaw is formed of a material which undergoes plastic deformation at the stress to which it is subjected in order to tighten or loosen the joint. This apparatus is used for bedding-in components of screwthreaded joints for tubes used in petroleum drilling operations.Type: GrantFiled: December 5, 1990Date of Patent: October 13, 1992Assignee: IDPA SAInventors: Louis Fradin, Michel Meurant
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Patent number: 5148698Abstract: A compression tool includes a housing having adjacently disposed first and second oppositely disposed portions defining therebetween a clearance. First and second pivot levers are provided, and each of the levers is pivotally secured to one of the portions and extends therefrom beyond the housing. At least three compression jaws are operably associated with the housing and disposed about the clearance. One of the jaws is secured to the housing and the other two of the jaws are each connected to one of the levers and are pivotal therewith. The one jaw is separate from the first and second levers. Each of the jaws has an arcuate compression surface. A movement assembly is operably associated with each of the levers and the associated jaw for causing cooperating movement thereof. A drive assembly is operably associated with each of the levers and is disposed exteriorly of the housing for causing pivoting thereof between a first open position and a second closed position.Type: GrantFiled: April 3, 1991Date of Patent: September 22, 1992Inventor: Helmut Dischler
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Patent number: 5129657Abstract: Opposed ends of two tubular members are relatively displaced toward opposite sides of an annular seal to deform the seal and reduce the seal bore into approximate or actual alignment with the tubular members bore.Type: GrantFiled: June 17, 1991Date of Patent: July 14, 1992Assignee: Vemco CorporationInventor: Paul G. McManigal
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Patent number: 5125143Abstract: A device for securing a skin tube to a bendable tube portion that is formed at the distal end of the insert part of an endoscope, the bendable tube portion being bendable by remote control. The method of securing a skin tube to a bendable tube portion comprises the steps of: fitting a flexible skin tube over the bendable tube portion; fitting a fitting member into the groove at at least one end portion of the skin tube, the fitting member having a shape which is fittable to the groove; loosely fitting a securing device around the end portion of the skin tube, the securing device being formed from a shape memory material which has previously memorized a shape with which the securing device is capable of peripherally pressing the end portion of the skin tube and, at the same time, pressing the fitting member against the surface of the groove; and restoring the securing device to the memorized shape.Type: GrantFiled: July 13, 1990Date of Patent: June 30, 1992Assignee: Asahi Kogaku Kogyo Kabushiki KaishaInventor: Nagashige Takahashi
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Patent number: 5121625Abstract: A tool is provided of forming a sleeve to the joint of enhanced resistance to pressure loading and which can be employed with relatively large diameter pipes, in which the sleeve and tube are crimped to each other by diametrically opposite crimps extending concavely inwardly of the outer surface of the sleeve and convexly inwardly of the inner surface of the tube, the respective crimps being isolated from each other by struts extending parallel to the longitudinal axis of the sleeve and tube, provision being made for equalization of the stresses produced in a seal ring contained in an annular flange of the sleeve during compressive reduction of the annular flange, provision also being made for the axial movement of the sleeve relative to the tube during compressive reduction of the flange.Type: GrantFiled: December 11, 1990Date of Patent: June 16, 1992Assignee: Mannesmann AGInventors: Heinz Unewisse, Herbert Foering
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Patent number: 5115550Abstract: The present invention is a hydraulic coupling and method of making the same. The coupling includes a male fitting, a female port, and a lock nut. The male fitting has external threads which receive the female port and the lock nut. The female port has an internal tapered recess for mating with an external tapered surface of the skirt of the lock nut. The skirt portion has inner and outer sections which initially form a double angle on the exterior surface. The outer section is bent inwardly to form a tapered external surface forming a steeper internal angle with the male fitting. An O-ring is positioned about the male fitting for sealing the hydraulic coupling within the tapered recess. The fitting of the present invention is also adaptable to the O.R.S. fitting and the S.A.E. flange fitting. A tapered surface of the female port engages an O-ring positioned in an annular groove of the male fitting.Type: GrantFiled: June 5, 1990Date of Patent: May 26, 1992Assignee: NWD International, Inc.Inventor: Nigel D. L. Williamson
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Patent number: 5109600Abstract: A hose construction and methods of making the same are provided, the hose construction comprising a tubular hose and a coupling secured to one end of the tubular hose, the inner peripheral surface of the tubular hose comprising an inner corrugated hose made of polymeric material and having inwardly convex projections with recesses therebetween and extending from one end of the tubular hose to the other end thereof, the coupling having an insert disposed in one end of the tubular hose and being radially outwardly expanded into sealing relation with the inner corrugated hose, the insert having an outer peripheral surface defined by a plurality of outwardly convex projections with recesses therebetween, the projections of the insert being respectively received in the recesses of the inner hose and the projections of the inner hose being respectively received in the recesses of the insert whereby the interior of the tubular hose is substantially sealed to the interior of the coupling, the inner peripheral surfaceType: GrantFiled: July 30, 1990Date of Patent: May 5, 1992Assignee: Dayco Products, Inc.Inventors: Homer N. Holden, James L. Lawrence, Jerry W. Rogers, John D. Sanders
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Patent number: 5099561Abstract: An apparatus for connecting casings together for axially aligning the casings with respect to each other and then forcing the ends of the casings together. The apparatus can be used in places that are hard to get at. The apparatus is simple and effective and the various parts of the apparatus cannot become separated and lost.Type: GrantFiled: April 17, 1989Date of Patent: March 31, 1992Assignee: Andres Santiago S.A.Inventor: D. Arturo Santiago Lozano
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Patent number: 5094795Abstract: A method is shown for forming a flange on an end of a plastic pipe liner of the type used to line a tubular member. A reinforced disc having a rigid portion and an elastomeric portion is placed about the liner exterior and moved into position flush with the flanged end of the tubular member. A retaining ring is placed about the reinforced disc and the disc and liner exposed end are heated to render the materials malleable. A forming unit is then used to apply force to the liner to flow the liner into a reformed shape having a greater external diameter than the remainder of the liner. The forming operation also bonds the reinforced disc to the reformed liner end to further resist any tendency of the liner end to be retracted into the interior of the tubular member.Type: GrantFiled: April 24, 1990Date of Patent: March 10, 1992Inventors: James S. McMillan, Sama'an Tarsha
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Patent number: 5092152Abstract: An improved crimping machine for crimping fittings on high pressure flexible hose of the type having a pair of opposed anvils moveable between an uncrimp position and a crimp position. A split crimp cage with each half thereof attached to respective ones of the anvils is provided. The crimp cage retains a plurality of crimping dies axially slideable within corresponding cage slots that are arranged in a uniform circular pattern about the cage. The cage slots extend radially from a common central transverse axis. The improvement comprises the use of crimping dies having substantially the same radial length, and substantially flat anvil cam surfaces that actuate the crimping dies to move at a uniform rate during a crimping operation. To achieve the uniform rate of travel, the flat anvil cam surfaces are oriented at a predetermined angle relative to the corresponding crimping die radial axis.Type: GrantFiled: September 28, 1990Date of Patent: March 3, 1992Assignee: Parker-Hannifin CorporationInventors: William P. Miller, Michael D. Cawley
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Patent number: 5086555Abstract: A power assisted clamping and rotating apparatus for coupling two threadedly engaged members into a third, central member. The central member is held on a support in a fixed position by a clamping mechanism and the other two members are threaded into the central member with rotatable driving mechanisms on each side of central member and being moveable toward the member as they rotate. The rotating side members are in proximity to limit switches which cause rotation of the driving mechanisms to be discontinued when the members are threaded together to a predetermined degree. The limit switches may either be in the form of a laser beam which is interrupted or mechanical or electromechanical switches.Type: GrantFiled: September 21, 1990Date of Patent: February 11, 1992Assignee: Arkla Products CompanyInventors: John M. Broadway, Martin L. Koschmann, William D. Mullikin
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Patent number: 5084963Abstract: A die and method for forming indentations in a grounding rod. The die is a U-shaped die for use in a hydraulic compression tool. The die has an inner face forming a general recess and has a plurality of series of individual tooth-like projections. The die is used to form a plurality of series of individual tooth-like indentations on an exterior surface of the grounding rod such that a connector can be compressed onto the rod with portions of the connector being deformed into the indentations to fixedly connect the connector to the rod.Type: GrantFiled: September 28, 1990Date of Patent: February 4, 1992Assignee: Burndy CorporationInventors: Thomas C. Murray, Kevin J. Flynn
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Patent number: 5084954Abstract: A universal quick connector release tool includes a handle and a bifurcated body resiliently mounted to the handle and including one or more finger members extending from each half of the body which collectively form a tapered fitting receiving passageway which is radially resiliently adapted to male tubular fittings of varying diameter and to demate such male fitting conduit with corresponding connectors.Type: GrantFiled: December 19, 1990Date of Patent: February 4, 1992Assignee: ITT CorporationInventor: Gary Klinger
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Patent number: 5079816Abstract: This invention is a new device for installing press fit couplings to join steel pipelines. This apparatus is a joining press which fits inside the pipes to be joined and grabs them on their inside surfaces. It then pulls the pipes together, forcing the pipe ends into the coupling. The invention is comprised of two hydraulically operated grippers to grip the pipe and a hydraulically operated cylinder to pull the pipes together. The entire press is controlled using only two hydraulic lines. The grippers can be retracted and the apparatus moved within the pipeline from one joint to the next.Type: GrantFiled: September 20, 1990Date of Patent: January 14, 1992Assignee: Electric Power Research Institute, Inc.Inventors: Allan T. Fisk, David I. Freed
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Patent number: 5075946Abstract: Apparatus is illustrated for fastening a petroleum delivery drop hose having looped reinforcement to a fitting wherein a clamping member includes a pair of opposed grating members A and B which may be opened and closed to receive and to exert a gripping force on the hose, by receiving the looped reinforcement between transverse grating bars, resisting longitudinal movement during insertion of the fitting in an open end of the hose.Type: GrantFiled: February 19, 1991Date of Patent: December 31, 1991Inventor: Steven A. Yeargin
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Patent number: 5069058Abstract: A swaging tool is provided for swaging a fitting and joining two tubes together, especially fittings in difficult-to-access areas. A removable head of the tool holds a first die stationary with respect to a second die moved toward the first die by a double piston arrangement within the tool cylinder. The head is slideably removable directly from the cylinder by a tongue and groove configuration on the head and cylinder, respectively, which further includes head alignment means to ensure proper orientation of the dies. Additional die aligning features are provided, as well as other features, including means for recognizing tool wear, an improved return spring for retracting the pistons, tool insertion guides to facilitate assembly of the tool and other features which result in an extremely compact and lightweight tool.Type: GrantFiled: February 28, 1990Date of Patent: December 3, 1991Assignee: Deutsch Metal ComponentsInventor: Arthur J. Hyatt
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Patent number: 5058415Abstract: A stamping press tool assembly for delivering parallel forces to a plurality of points angularly spaced around a ring-shaped workpiece, whereby the ring-shaped workpiece is positioned beneath a shouldered hub centered inside the tool assembly, and having a plurality of radial sector rams arrayed between the hub and a bottom plate. The hub receives independent and substantially equal force, providing custom stamping deformation of the workpiece in a uniform manner.Type: GrantFiled: June 25, 1990Date of Patent: October 22, 1991Inventors: John G. Blase, Robert Blase
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Patent number: 5056351Abstract: A device is provided for crimping a coupling on the end of a hose. The device has a die assembly for holding the hose and coupling spaced apart from and in axial alignment with a crimping mechanism comprised of a hydraulic cylinder and a pusher. The cylinder has an internal stop. A fluid operated actuator mechanism moves the crimping mechanism axially downward to engage the die assembly. The device has an adjusting mechanism for adjusting the crimping mechanism in a predetermined relationship to the die assembly. The crimping mechanism and the adjusting mechanism cooperate so that when the crimping mechanism engages the internal stop, the coupling is crimped to the hose end in accordance with the predetermined relationship. The adjusting mechanism contains an angular scale and a linear scale both with marked divisions. The adjusting mechanism provides for easy recalibration of the device.Type: GrantFiled: May 30, 1990Date of Patent: October 15, 1991Assignee: Dayco Products, Inc.Inventors: C. Edward Stiver, George J. Teti, Charles S. Pearson, Kenneth R. Brown